Tüm alıştırma soruları

3551 soru

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A network technician is provisioning hardware for a newly expanded office space that houses two separate logical subnets: $192.168.10.0/24$ for administration and $192.168.20.0/24$ for production. The technician connects all client workstations to a central networking device. While hosts within the administration subnet can communicate with one another, cross-subnet communication to the production network fails completely. Additionally, clients attempting to obtain dynamic configurations across the subnet boundary fail to locate a central provider and fall back to $169.254.x.x$ self-assigned addresses. Which network hardware device must be installed to forward packets between these distinct logical subnets?

Router

Unmanaged Layer 2 Switch

DNS Server

APIPA Gateway

Cevabı ve açıklamayı göster

Cevap: Router

Cevap

Router

A router operates at OSI Layer 3 (Network Layer) and uses logical IP network addresses to determine packet forwarding paths between separate subnets. Because the administration (

192.168.10.0/24

) and production (

192.168.20.0/24

) networks are distinct logical subnets, a router is required to connect them and manage inter-subnet communication.

Adım Adım Çözüm

Analyze the network failure described in the scenario

Hosts within the same IP subnet (

192.168.10.0/24

) can communicate locally, but communication between different subnets (

192.168.10.0/24

and

192.168.20.0/24

) fails.

Layer 2 devices maintain communication within a single broadcast domain, but traffic moving between distinct IP subnets requires Layer 3 network layer processing.

Evaluate the missing functional capability

Inter-subnet communication requires reading IP packet headers and making forwarding decisions based on destination IP networks rather than destination MAC addresses.

Only a Layer 3 routing device (or Layer 3 switch) inspects IP headers to route packets across subnets and forward DHCP relay requests.

Select the appropriate network hardware device

Installing a router fulfills the requirement to connect separate IP subnets and enable inter-subnet traffic flow.

Routers operate at OSI Layer 3 and exist specifically to interconnect separate logical networks.

Anahtar Kavram

Layer 2 vs Layer 3 Network Hardware Boundaries

Soru 3022Soru →

Match each host network configuration state and diagnostic output on the left with its correct underlying IP addressing or protocol diagnosis on the right.

Soldaki öğeye tıklayın, sonra eşleşen sağdaki öğeye tıklayın

Cevabı ve açıklamayı göster

Cevap

1. APIPA IP assignment (169.254.x.x) corresponds to DHCP failure.
2. Inability to reach external subnets despite local connectivity corresponds to a default gateway issue.
3. Successful IP pings paired with failed FQDN lookup corresponds to a DNS server misconfiguration.
4. fe80:: IPv6 addressing corresponds to non-routable link-local auto-configuration.

Each IP parameter serves a distinct network role: APIPA (169.254.0.0/16) occurs when DHCP discovery fails; default gateways route traffic off the local subnet; DNS converts human-readable domain names into IP addresses; and IPv6 link-local addresses (fe80::/10) facilitate communication restricted strictly to the local physical link.

Adım Adım Çözüm

Analyze item 1 (169.254.142.88)

Identify the address block 169.254.0.0/16 as APIPA assigned when DHCP fails.

APIPA is a fallback mechanism used by operating systems when no response is received from a DHCP server.

Analyze item 2 (Local connectivity present, remote connectivity failing)

Determine that local traffic does not require a gateway, but cross-subnet traffic does.

When a host can ping intra-subnet IP addresses but fails to reach inter-subnet IP addresses, the default gateway configuration is incorrect or missing.

Analyze item 3 (Numeric IP ping succeeds, FQDN resolution fails)

Isolate the layer 7 name resolution component.

Direct IP communication proves network layer connectivity, leaving transport and application domain name mapping (DNS) as the root cause.

Analyze item 4 (fe80:: IPv6 address)

Match fe80::/10 to IPv6 link-local scope.

IPv6 link-local addresses enable local segment communication but cannot pass through routers without a Global Unicast Address.

Anahtar Kavram

Core IP Addressing Parameters and Diagnostic Symptomatic Analysis

Tahmini Süre:2m 0s

Soru 3023Soru →

Match each wireless networking technical requirement or deployment scenario on the left with the corresponding IEEE 802.11 standard on the right.

Soldaki öğeye tıklayın, sonra eşleşen sağdaki öğeye tıklayın

Cevabı ve açıklamayı göster

Cevap

High-density stadium AP deployment with OFDMA and TWT maps to IEEE 802.11ax (Wi-Fi 6). 5 GHz-only deployment with 160 MHz bonding and 256-QAM maps to IEEE 802.11ac (Wi-Fi 5). Dual-band deployment supporting 4 spatial streams up to 600 Mbps maps to IEEE 802.11n (Wi-Fi 4). Legacy 2.4 GHz DSSS deployment capped at 11 Mbps maps to IEEE 802.11b.

Each scenario correctly maps to its defining standard based on frequency band support, maximum theoretical throughput, and hardware features: 802.11ax introduces OFDMA and TWT across dual/tri-bands; 802.11ac is limited strictly to 5 GHz and supports 256-QAM with 160 MHz channel bonding; 802.11n introduced dual-band MIMO capped at 600 Mbps; and 802.11b is the legacy 2.4 GHz DSSS standard limited to 11 Mbps.

Adım Adım Çözüm

Analyze the technical requirements for the high-density stadium scenario (OFDMA, TWT, dual-band operation).

OFDMA and Target Wake Time (TWT) are key innovations introduced in IEEE 802.11ax (Wi-Fi 6) to handle high-density client environments on both

2.4\text{ GHz}

and

5\text{ GHz}

frequencies.

Matching advanced channel division and power-saving features to their defining standard.

Evaluate the 5 GHz-exclusive high-throughput requirement (160 MHz bonding, 256-QAM, up to 6.9 Gbps).

IEEE 802.11ac (Wi-Fi 5) operates exclusively on

5\text{ GHz}

and utilizes 256-QAM and

80/160\text{ MHz}

channel bonding to achieve gigabit-class throughput.

Distinguishing frequency band constraints between dual-band standards and 5 GHz-only standards.

Evaluate the dual-band 600 Mbps throughput requirement using MIMO.

IEEE 802.11n (Wi-Fi 4) introduced dual-band MIMO with up to 4 spatial streams (

4 \times 4

), giving a theoretical throughput limit of

600\text{ Mbps}

(

150\text{ Mbps}

per stream using

40\text{ MHz}

channels).

Identifying the standard that first brought MIMO spatial multiplexing and dual-band flexibility.

Analyze the legacy 2.4 GHz scenario using DSSS capped at 11 Mbps.

IEEE 802.11b was one of the original 1999 standards operating purely in the

2.4\text{ GHz}

spectrum using DSSS, limited to

11\text{ Mbps}

Matching legacy modulation schemes and speed caps to early Wi-Fi standards.

Anahtar Kavram

Differentiating Wi-Fi standards (802.11b, 802.11n, 802.11ac, 802.11ax) by frequency bands, maximum theoretical throughput, modulation techniques, and multi-user performance features.

Soru 3024Soru →

A technician is inspecting a mobile device that features a physical USB Type-C port marked with a small lightning bolt icon printed next to it. Which standard or feature is specifically indicated by this symbol?

Thunderbolt protocol support, providing high-speed data throughput and video output capabilities

Guaranteed Thunderbolt protocol capabilities on any standard USB Type-C cable connected to the port

A prompt to initiate a deep battery discharge calibration routine whenever an accessory is connected

Direct external port compatibility for installing SO-DIMM memory expansion modules

Cevabı ve açıklamayı göster

Cevap: Thunderbolt protocol support, providing high-speed data throughput and video output capabilities

Cevap

Thunderbolt protocol support, providing high-speed data throughput and video output capabilities

The lightning bolt icon printed adjacent to a physical USB Type-C port explicitly signifies host support for the Thunderbolt protocol, enabling features such as high-bandwidth data transfers, PCIe tunneling, and DisplayPort video output.

Adım Adım Çözüm

Identify the physical port type and accompanying symbol

The port is a physical USB Type-C port labeled with a lightning bolt icon.

Hardware manufacturers use the lightning bolt icon to designate host port support for Thunderbolt technology.

Determine the functional capabilities associated with that standard

Thunderbolt ports support enhanced data bandwidth, PCIe tunneling, and native display signals over the USB Type-C connector.

Recognizing port symbols ensures proper selection of compatible docking stations, external displays, and storage accessories.

Anahtar Kavram

Identifying mobile device port symbols and distinguishing protocol capabilities from physical connector form factors

Soru 3025Soru →

A field technician is preparing to upgrade the system RAM on a corporate laptop. Which TWO of the following actions and component selections are required to perform this upgrade correctly and safely?

Geçerli olan tümünü seçin

Select SO-DIMM modules that match the laptop memory slot specification.

Disconnect the AC power adapter and remove or disconnect the internal battery before installing the RAM.

Purchase standard full-sized desktop DIMM modules because they share identical pin configurations with laptop sockets.

Install a fluorescent inverter board on the motherboard slot to supply power to the memory module.

Cevabı ve açıklamayı göster

Cevap: Select SO-DIMM modules that match the laptop memory slot specification.; Disconnect the AC power adapter and remove or disconnect the internal battery before installing the RAM.

Cevap

The technician must select SO-DIMM form-factor memory modules and ensure all power sources, including the AC power adapter and internal battery, are disconnected prior to replacing or adding hardware.

Upgrading laptop memory requires using SO-DIMM (Small Outline Dual In-line Memory Module) memory modules designed specifically for the smaller physical dimensions of laptop motherboards. Additionally, safety protocols mandate disconnecting all external AC power and the internal battery before opening the laptop chassis to avoid short circuits.

Adım Adım Çözüm

Identify the correct form factor for laptop RAM.

Determine that SO-DIMM (Small Outline DIMM) modules are required for laptops, as standard desktop DIMMs will not physically fit.

Laptops use compact form-factor hardware to conserve internal chassis space.

Follow electrostatic discharge (ESD) and safety procedures.

Unplug the laptop from wall power and disconnect/remove the internal battery.

Removing power sources prevents short circuits and hardware damage while working inside the device.

Anahtar Kavram

Laptop RAM Form Factors and Hardware Safety Precautions

Soru 3026Soru →

A network technician is configuring wireless access points for a small office using the 2.4 GHz frequency band. To minimize co-channel interference, the technician needs to use standard non-overlapping channels. Which TWO of the following channels should the technician select?

Geçerli olan tümünü seçin

Channel 1

Channel 6

Channel 3

Channel 10

Cevabı ve açıklamayı göster

Cevap: Channel 1; Channel 6

Cevap

Channel 1 and Channel 6 are standard non-overlapping channels in the 2.4 GHz wireless spectrum.

In the 2.4 GHz wireless band, channels 1, 6, and 11 are the standard non-overlapping channels because each channel uses 20 MHz (or 22 MHz for DSSS) of bandwidth, requiring a separation of 5 channel numbers to prevent frequency overlap.

Adım Adım Çözüm

Identify the frequency band being configured.

The scenario specifies the 2.4 GHz wireless band.

Channel overlap characteristics depend on the frequency band being used.

Recall standard non-overlapping channels in the 2.4 GHz band in North America.

The three standard non-overlapping channels spaced 25 MHz apart are Channel 1, Channel 6, and Channel 11.

Each 2.4 GHz channel occupies 22 MHz of bandwidth (20 MHz active channel plus guard bands), so channels must be separated by at least 5 channel numbers to avoid frequency overlap.

Select the correct options matching the standard non-overlapping channels.

Channel 1 and Channel 6 match the required standard non-overlapping channels.

Selecting Channel 1 and Channel 6 ensures zero frequency overlap between adjacent access points.

Anahtar Kavram

2.4 GHz Non-Overlapping Wi-Fi Channels

Soru 3027Soru →

A field technician is servicing a corporate laptop that requires a memory upgrade to support local client-side virtualization. After verifying that the system motherboard supports up to 32 GB of DDR4 RAM, the technician purchases a 16 GB DDR4 module based on matching voltage and frequency specifications. When attempting physical installation, the technician finds that the module is nearly twice as long as the internal memory slot and the notch does not align. Which of the following reflects the primary error made during component selection?

The technician selected a standard desktop DIMM module instead of the compact SO-DIMM form factor required for laptops.

The technician failed to install a CCFL backlight inverter board to supply high-voltage power to the memory controller.

The technician omitted a deep lithium-ion battery discharge calibration cycle required to un-key dual-channel expansion slots.

The technician attempted to insert the memory module into a dedicated internal Thunderbolt controller slot.

Cevabı ve açıklamayı göster

Cevap: The technician selected a standard desktop DIMM module instead of the compact SO-DIMM form factor required for laptops.

Cevap

The technician selected a standard desktop DIMM module instead of the compact SO-DIMM form factor required for laptops.

Laptops utilize Small Outline Dual In-line Memory Modules (SO-DIMMs) due to strict space restrictions inside portable chassis. Standard desktop memory modules (DIMMs) are significantly longer (around 133 mm versus 67 mm for SO-DIMMs) and feature differently positioned key notches to prevent improper insertion. Matching DDR generation, voltage, and clock frequency is insufficient if the physical form factor does not match.

Adım Adım Çözüm

Analyze the physical symptom reported in the scenario

The new RAM module is physically twice as long as the memory socket and the keying notch does not align.

This physical size disparity indicates a form factor mismatch rather than an electrical or protocol speed issue.

Compare desktop and laptop RAM form factor specifications

Standard desktop computers use full-sized DIMM (Dual In-line Memory Module) sticks (approx. 133.35 mm), whereas laptops require SO-DIMM (Small Outline DIMM) modules (approx. 67.6 mm).

Although both modules may share DDR4 architecture and frequency parameters, desktop DIMMs cannot physically fit inside portable laptop SO-DIMM slots.

Identify the correct replacement hardware

Procure a 16 GB DDR4 SO-DIMM module for installation into the laptop.

Specifying the correct form factor ensures physical compatibility and proper retention within the laptop chassis.

Anahtar Kavram

Laptop RAM Form Factors (SO-DIMM vs. DIMM)

Soru 3028Soru →

A network administrator is setting up corporate email access on personal smartphones under a new Bring Your Own Device (BYOD) program. Enterprise policy mandates that corporate email, data, and associated app content remain encrypted in an isolated logical workspace so that the company can perform a selective wipe of corporate assets without affecting the employee's personal photos or applications. Additionally, incoming email synchronization must be encrypted using SSL/TLS over the standard secure port. Which of the following configurations best meets these requirements?

Deploy Mobile Application Management (MAM) containerization and configure incoming email using IMAPS on port 993.

Enroll all devices into Mobile Device Management (MDM) with full device wipe policies and configure incoming email using POP3 on port 110.

Deploy Mobile Application Management (MAM) containerization and configure incoming email using secure IMAP on port 143.

Filter access using International Mobile Subscriber Identity (IMSI) numbers at the gateway and configure incoming email using POP3S on port 995.

Cevabı ve açıklamayı göster

Cevap: Deploy Mobile Application Management (MAM) containerization and configure incoming email using IMAPS on port 993.

Cevap

Deploy Mobile Application Management (MAM) containerization and configure incoming email using IMAPS on port 993.

Mobile Application Management (MAM) allows administrators to create a secure, encrypted container for corporate apps and data on personal (BYOD) devices. This ensures corporate emails and documents can be selectively wiped without wiping personal user content. Furthermore, IMAPS (IMAP over SSL/TLS) uses port 993 to ensure incoming email synchronization is encrypted end-to-end.

Adım Adım Çözüm

Identify the device management boundary for BYOD environments

Mobile Application Management (MAM) with containerization isolates corporate apps and data from personal user data, enabling selective wiping.

Full device wipes via MDM would erase personal data, which is inappropriate for BYOD deployments.

Determine the required secure email synchronization protocol and port

IMAPS (IMAP over SSL/TLS) uses port 993 to provide multi-device folder synchronization securely.

Standard unencrypted IMAP uses port 143, while IMAPS uses port 993.

Anahtar Kavram

Mobile Application Management (MAM) vs MDM and Secure Email Synchronization Ports

Soru 3029Soru →

A systems administrator is setting up outbound traffic rules on an enterprise edge firewall to allow internal web servers to connect to external API gateways for encrypted transaction processing. Which transport layer protocol and port number must be allowed through the firewall to support standard secure web services?

TCP port 443

TCP port 80

UDP port 443

TCP port 8080

Cevabı ve açıklamayı göster

Cevap: TCP port 443

Cevap

TCP port 443 is the standard protocol and port for secure web communications (HTTPS).

HTTPS (Hypertext Transfer Protocol Secure) provides encrypted web communication using TLS/SSL and operates over TCP port 443 by default.

Adım Adım Çözüm

Identify the required network service requirements.

The scenario specifies a requirement for encrypted web traffic (HTTPS) connecting to API gateways.

Security requirements mandate encryption in transit for transaction processing.

Map HTTPS to its standard transport layer protocol and port.

HTTPS uses TCP as its connection-oriented transport protocol and standard port 443.

TCP guarantees reliable delivery for application payload, while port 443 is the standard well-known port for HTTPS.

Anahtar Kavram

Hypertext Transfer Protocol Secure (HTTPS) over TCP 443

Soru 3030Soru →

A technician is pairing a user's smartwatch with their mobile phone using a short-range wireless Bluetooth connection. Which of the following network types best categorizes this personal connection?

Personal Area Network (PAN)

Local Area Network (LAN)

Metropolitan Area Network (MAN)

Wide Area Network (WAN)

Cevabı ve açıklamayı göster

Cevap: Personal Area Network (PAN)

Cevap

Personal Area Network (PAN)

The Personal Area Network (PAN) classification applies to short-range communications dedicated to an individual user's personal devices, such as Bluetooth connections between smartphones, smartwatches, or wireless headsets.

Adım Adım Çözüm

Analyze the geographic scope and scale of the scenario.

The connection is short-range (Bluetooth) between personal wearable devices centered on a single user.

Identifying the coverage radius determines the appropriate network scope classification.

Match the scope to the standard network type definition.

A short-range personal interconnection (typically under 10 meters) is classified as a Personal Area Network (PAN).

PAN is designed specifically for personal peripherals and mobile device pairing.

Anahtar Kavram

Geographic network classifications (PAN vs LAN vs MAN vs WAN)

Soru 3031Soru →

A network technician is setting up a local server intended to automatically assign dynamic IP addresses and default gateways to workstations on the subnetwork. Which port and transport layer protocol combination must be allowed on the server to support this service?

UDP port 67

UDP port 53

TCP port 67

TCP port 80

Cevabı ve açıklamayı göster

Cevap: UDP port 67

Cevap

UDP port 67 is the correct choice because Dynamic Host Configuration Protocol (DHCP) servers receive incoming client configuration requests on UDP port 67.

Dynamic Host Configuration Protocol (DHCP) server software listens on User Datagram Protocol (UDP) port 67 to receive discovery and request messages from network hosts requiring automatic IP configuration.

Adım Adım Çözüm

Identify the required network service based on the scenario description.

The server automatically assigns IP addresses and network configuration parameters, which defines the function of Dynamic Host Configuration Protocol (DHCP).

Recognizing the functional definition identifies the protocol being queried.

Determine the transport protocol and port number assigned to the DHCP server role.

DHCP operates over UDP, using port 67 on the server side and port 68 on the client side.

Broadcast-based IP address distribution requires connectionless datagram traffic before an endpoint has configured its IP stack.

Anahtar Kavram

Dynamic Host Configuration Protocol (DHCP) Port Assignment

Soru 3032Soru →

A network technician is deploying a dual-band wireless access point operating simultaneously on the 2.4 GHz and 5 GHz frequency bands to support legacy office devices and modern high-speed laptops. To minimize wireless interference while maintaining broad device compatibility and optimizing performance, which of the following configuration practices should the technician follow? (Select TWO.)

Geçerli olan tümünü seçin

Restrict 2.4 GHz channel selection strictly to non-overlapping channels 1, 6, or 11 using a 20 MHz channel width.

Assign adjacent channels such as 2, 3, and 4 in high-density areas to maximize available frequency assignments.

Configure channel bonding (40 MHz or 80 MHz channel widths) primarily on the 5 GHz band rather than the 2.4 GHz band.

Enable 40 MHz channel bonding on the 2.4 GHz band across channels 1 and 6 to double throughput for legacy clients.

Cevabı ve açıklamayı göster

Cevap: Restrict 2.4 GHz channel selection strictly to non-overlapping channels 1, 6, or 11 using a 20 MHz channel width.; Configure channel bonding (40 MHz or 80 MHz channel widths) primarily on the 5 GHz band rather than the 2.4 GHz band.

Cevap

The technician should restrict 2.4 GHz channel selection strictly to non-overlapping channels 1, 6, or 11 using a 20 MHz channel width, and configure channel bonding (40 MHz or 80 MHz channel widths) primarily on the 5 GHz band rather than the 2.4 GHz band.

Restricting the 2.4 GHz band to non-overlapping channels 1, 6, and 11 prevents adjacent-channel interference. Meanwhile, deploying wider bonded channels (40 MHz or 80 MHz) on the 5 GHz band takes advantage of the significantly larger number of available non-overlapping channels in the 5 GHz spectrum without saturating the 2.4 GHz band.

Adım Adım Çözüm

Analyze the 2.4 GHz spectrum constraints.

The 2.4 GHz band has only 11 usable channels in North America, with 5 MHz separation. Standard 20 MHz wide signals require 5 channels of separation to avoid overlapping, making 1, 6, and 11 the only non-overlapping combination.

Using any other channels (such as 2, 3, or 4) creates adjacent channel interference, degrading overall network performance.

Evaluate channel bonding strategies across frequency bands.

Channel bonding combines multiple 20 MHz channels (e.g., 40 MHz or 80 MHz) to increase bandwidth. Because 2.4 GHz lacks sufficient spectrum, 40 MHz bonding consumes almost the entire band, while 5 GHz has dozens of non-overlapping channels suited for wider bonded channels.

Channel bonding is suitable for the 5 GHz (and 6 GHz) spectrum where abundant non-overlapping channels exist, but should be avoided in the 2.4 GHz band.

Anahtar Kavram

2.4 GHz vs 5 GHz channel planning and channel bonding constraints

Soru 3033Soru →

A field technician is deploying mobile handheld terminals to warehouse workers who must connect a wired USB Type-A barcode scanner while simultaneously powering the terminal. When using a passive USB Type-C hub powered only by the mobile terminal, the terminal charges slowly from an external power supply connected to the hub, but it fails to detect the barcode scanner. Which of the following best explains why the barcode scanner is not functioning, and what is the appropriate solution?

The passive hub does not properly facilitate Configuration Channel (CC) signaling for Dual-Role Data (DRD) and USB Power Delivery negotiation; deploying a powered USB-C dock with explicit host-mode peripheral support is required.

Mobile device USB Type-C ports require active Thunderbolt protocol controllers to negotiate host data connections while receiving external power, necessitating a Thunderbolt 4 docking station.

Mobile Application Management (MAM) policies automatically block USB data transfer whenever an external power source is detected; modifying the MAM security policy to allow USB debugging will enable the scanner.

The mobile terminal must have Exchange ActiveSync enabled to establish a background synchronization bridge for attached USB host peripherals.

Cevabı ve açıklamayı göster

Cevap: The passive hub does not properly facilitate Configuration Channel (CC) signaling for Dual-Role Data (DRD) and USB Power Delivery negotiation; deploying a powered USB-C dock with explicit host-mode peripheral support is required.

Cevap

The passive hub fails to negotiate Configuration Channel (CC) pin signaling required for simultaneous USB Power Delivery and Dual-Role Data host mode operations. The technician must deploy a powered USB-C dock designed to support host-mode peripheral data transfer while delivering power.

USB Type-C relies on Configuration Channel (CC) pins within the physical connector to negotiate roles such as host vs. device (Dual-Role Data) and power provider vs. consumer (USB Power Delivery). A simple passive hub often lacks the active management circuitry necessary to negotiate charging the terminal while simultaneously maintaining the terminal's USB host controller state required to operate external peripherals like barcode scanners. Replacing the passive hub with a powered USB-C dock ensures proper CC signaling and power delivery.

Adım Adım Çözüm

Analyze the technical requirements of the scenario.

The mobile terminal needs to act as a USB host (to receive barcode data from the USB Type-A scanner) while simultaneously acting as a power sink (receiving charge from an external supply).

USB Type-C supports Dual-Role Data (DRD) and Dual-Role Power (DRP) controlled dynamically through Configuration Channel (CC) logic pins.

Diagnose the hardware failure cause.

Passive hubs frequently lack dedicated controller logic to pass CC pin negotiation state transitions for both USB Power Delivery (USB PD) and host-mode peripheral enumeration under simultaneous charge scenarios.

Without proper CC pin role signaling, the handheld terminal defaults to a power-receiving peripheral state and disables host controller power/data routing to connected Type-A ports.

Identify the proper hardware solution.

Deploying a powered USB-C dock or port replicator with dedicated controller logic handles USB PD and host role negotiation correctly.

A dedicated dock actively signals the mobile device to operate as a data host while safely receiving power.

Anahtar Kavram

USB Type-C Configuration Channel (CC) signaling and Dual-Role Data / Power Delivery capabilities for mobile accessories.

Tahmini Süre:1m 30s

Soru 3034Soru →

A systems administrator is configuring a dual-homed backup server equipped with two network interface cards (NICs). NIC 1 connects to the corporate LAN ( $192.168.10.0/24$ ) with IP address $192.168.10.50$ , subnet mask $255.255.255.0$ , and default gateway $192.168.10.1$ . NIC 2 connects directly to a dedicated local iSCSI storage network ( $10.0.50.0/24$ ) with IP address $10.0.50.25$ , subnet mask $255.255.255.0$ , and default gateway $10.0.50.1$ . While local LAN management access functions normally, outbound traffic destined for remote subnets experiences unpredictable routing drops. Which configuration change will resolve the routing issue while maintaining connectivity to both networks?

Remove the default gateway address entry from the NIC 2 configuration.

Reconfigure NIC 2 to auto-assign an APIPA address so iSCSI targets can be dynamically discovered without gateways.

Set the primary DNS server IP on NIC 1 to match the IP address of NIC 2 so DHCP leases update route targets.

Replace the router on the corporate LAN with an unmanaged Layer 2 switch to bridge the two IP subnets.

Cevabı ve açıklamayı göster

Cevap: Remove the default gateway address entry from the NIC 2 configuration.

Cevap

Removing the default gateway address from the secondary NIC (NIC 2) resolves the routing conflict while preserving communication across both network segments.

On a multihomed operating system, defining default gateways on multiple network adapters creates multiple default routes (

0.0.0.0/0

) with equal or competing metrics. This leads to asymmetric routing or packet loss when traffic destined for external networks is sent out of an adapter connected to a isolated segment. Since the iSCSI network is local (

10.0.50.0/24

), host-to-storage traffic is routed directly via the connected subnet interface without requiring a default gateway. Removing the default gateway from the secondary adapter ensures all off-subnet traffic is predictably sent through the primary interface gateway.

Adım Adım Çözüm

Analyze the network configuration of the multihomed server.

NIC 1 (

192.168.10.50/24

) and NIC 2 (

10.0.50.25/24

) both have default gateways defined (

192.168.10.1

and

10.0.50.1

Having multiple default gateways on a single host creates competing default routes (

0.0.0.0/0

) in the local routing table.

Identify the purpose of each connected network segment.

NIC 1 provides access to the corporate LAN and remote subnets, whereas NIC 2 communicates strictly with local iSCSI storage targets on

10.0.50.0/24

Traffic to local subnets (

10.0.50.0/24

) is handled by directly connected interface routes and does not require a gateway.

Determine the necessary TCP/IP configuration correction.

Clear the default gateway field on NIC 2.

Removing the secondary default gateway ensures all non-local outbound traffic flows exclusively through NIC 1's gateway (

192.168.10.1

) without breaking local communication on

10.0.50.0/24

Anahtar Kavram

Multihomed Default Gateway Routing Constraints

Soru 3035Soru →

Match each network adapter IP configuration status on the left with its corresponding network addressing classification or condition on the right.

Soldaki öğeye tıklayın, sonra eşleşen sağdaki öğeye tıklayın

Cevabı ve açıklamayı göster

Cevap

169.254.89.21 matches APIPA self-assigned address; 192.168.1.50 matches Valid IPv4 private address; fe80::a1b2:c3d4:e5f6%12 matches IPv6 Link-Local address.

Each diagnostic output corresponds directly to standard networking address classifications: 169.254.0.0/16 is reserved for APIPA when DHCP fails; 192.168.x.x is a standard Private IPv4 address; and fe80::/10 represents IPv6 link-local unicast addresses.

Adım Adım Çözüm

Examine the IPv4 address 169.254.89.21.

Identify that the range 169.254.0.0/16 is reserved for Automatic Private IP Addressing (APIPA).

Operating systems automatically assign an APIPA address when a DHCP server is unavailable.

Examine the IPv4 address 192.168.1.50 and gateway 192.168.1.1.

Confirm that the host IP address and the default gateway IP address reside on the identical subnet (192.168.1.0/24).

This setup allows communication both locally and through the default gateway to remote networks.

Examine the IPv6 address starting with fe80::.

Recognize fe80::/10 as the IPv6 Link-Local address block.

IPv6 interfaces automatically self-configure link-local addresses to enable local network communications without a router.

Anahtar Kavram

IP Address Types and Diagnostics (APIPA, Private IPv4, IPv6 Link-Local)

Soru 3036Soru →

A systems administrator is reviewing hardware service guidelines for upgrading and maintaining a corporate fleet of laptops. Which of the following technical considerations regarding laptop hardware components and upgrades are accurate? (Select TWO.)

Geçerli olan tümünü seçin

Thin-and-light laptops often feature soldered LPDDR memory on the system board, which prevents post-purchase RAM upgrades.

OLED laptop displays emit light directly from individual pixels, eliminating the need for a separate fluorescent backlight inverter board.

If a laptop requires memory expansion, standard 288-pin desktop DIMM modules can be installed directly into internal expansion slots.

When an OLED laptop screen displays a dark image, replacing the display inverter board is the primary repair action to restore screen illumination.

Cevabı ve açıklamayı göster

Cevap: Thin-and-light laptops often feature soldered LPDDR memory on the system board, which prevents post-purchase RAM upgrades.; OLED laptop displays emit light directly from individual pixels, eliminating the need for a separate fluorescent backlight inverter board.

Cevap

The accurate statements are that thin-and-light laptops often feature soldered LPDDR memory on the system board preventing RAM upgrades, and OLED laptop displays emit light directly per pixel without needing a separate backlight inverter board.

Soldered LPDDR RAM prevents physical memory replacement or expansion, which is standard in many thin laptop designs. OLED displays generate illumination at the pixel level and do not use backlights or backlight inverters.

Adım Adım Çözüm

Evaluate memory form factors and upgradeability in laptops.

Laptops use SO-DIMM modules when slots are provided, but many modern ultra-thin laptops use soldered LPDDR RAM, which cannot be upgraded.

Physical space constraints determine whether memory is modular (SO-DIMM) or fixed (soldered).

Evaluate display technology components.

OLED panels are self-emissive, meaning each pixel generates its own light without requiring backlights or CCFL inverter boards.

Inverters are only present in legacy LCD panels using CCFL backlights.

Anahtar Kavram

Laptop Memory Form Factors and Display Component Architecture

Soru 3037Soru →

A network technician is configuring network infrastructure services for a newly opened branch office. The network requirements specify that client workstations must automatically receive IP configuration settings upon connecting, and internal hostnames must automatically resolve to IP addresses for local resource access. Which TWO server roles or host services should the technician deploy to meet these requirements? (Select TWO.)

Geçerli olan tümünü seçin

DHCP Server

APIPA Service

DNS Server

Web Proxy Server

Cevabı ve açıklamayı göster

Cevap: DHCP Server; DNS Server

Cevap

The technician should deploy a DHCP Server to handle dynamic IP address assignment and a DNS Server to handle hostname-to-IP address resolution.

DHCP Server automatically provides IP address configuration details to clients upon joining the network, satisfying the dynamic configuration requirement. DNS Server translates hostnames to numeric IP addresses, enabling local resource connectivity by name.

Adım Adım Çözüm

Identify the requirement for automatic IP configuration assignment.

Dynamic Host Configuration Protocol (DHCP) is responsible for automatically distributing IP addresses, subnet masks, default gateways, and DNS server addresses to network clients.

Without DHCP, technicians would have to manually configure static IP settings on every host workstation.

Identify the requirement for hostname resolution.

Domain Name System (DNS) translates friendly hostnames (e.g., workstation1.local) into machine-readable IP addresses (e.g., 192.168.1.50).

Network protocols require numeric IP addresses to route packets, making DNS necessary for hostname-based communication.

Anahtar Kavram

Network Host Services: DHCP dynamic addressing and DNS hostname resolution roles

Soru 3038Soru →

A field technician is deploying new mobile devices and accessories for a team of remote inspectors. Which TWO of the following are distinct features of the USB Type-C port used on modern mobile devices?

Geçerli olan tümünü seçin

Reversible physical plug orientation that allows the connector to be inserted in either direction

Support for Alternate Mode (Alt Mode) to transmit non-USB signals like DisplayPort video

Requirement for an internal SO-DIMM expansion card to negotiate high-speed data transmission

Mandatory authentication using the device's cellular IMEI number before negotiating power delivery

Cevabı ve açıklamayı göster

Cevap: Reversible physical plug orientation that allows the connector to be inserted in either direction; Support for Alternate Mode (Alt Mode) to transmit non-USB signals like DisplayPort video

Cevap

The correct features are the reversible physical plug orientation that allows insertion in either direction, and support for Alternate Mode (Alt Mode) to transmit non-USB signals such as DisplayPort video.

The USB Type-C standard specifies a symmetrical, reversible physical connector that eliminates orientation issues when plugging in cables. Additionally, USB Type-C supports Alternate Mode (Alt Mode), allowing multiplexing of non-USB data protocols such as DisplayPort video directly across the cable pins.

Adım Adım Çözüm

Identify physical features of USB Type-C connectors.

USB Type-C connectors feature a symmetrical 24-pin design that allows them to be plugged in without regard to orientation.

Reversibility is a core design standard for USB Type-C physical interfaces.

Identify signaling and protocol capabilities of USB Type-C ports.

USB Type-C hardware specifications include DisplayPort Alternate Mode (Alt Mode) capability for video transmission.

Alt Mode enables pins within the USB Type-C connector to carry native DisplayPort or HDMI signals directly to external displays.

Anahtar Kavram

USB Type-C Port Capabilities and Features

Soru 3039Soru →

A field technician is troubleshooting a corporate mobile smartphone that cannot reach internal intranet sites or sync corporate email while connected to an enterprise Wi-Fi network. Inspecting the network configuration on the mobile device reveals an IP address of $169.254.112.45$ . Additionally, the user notes that secure IMAP email synchronization fails when connecting over cellular data, and subscriber provisioning failed after transferring a physical SIM card from a deactivated legacy phone. Which TWO of the following actions should the technician perform to resolve these network and synchronization issues? (Select TWO.)

Geçerli olan tümünü seçin

Investigate and restore DHCP server reachability or scope availability on the wireless network segment.

Configure the mobile email client to connect using IMAP over port 993 with SSL/TLS enabled.

Re-enter the legacy physical device's IMEI identifier into the cellular carrier management portal to activate the SIM card.

Switch the mobile email account configuration from IMAP to POP3 over port 110 to maintain status synchronization across devices.

Adjust the 2.4 GHz wireless access point radio channels to operate on Channel 4 to avoid wireless signal overlap.

Cevabı ve açıklamayı göster

Cevap: Investigate and restore DHCP server reachability or scope availability on the wireless network segment.; Configure the mobile email client to connect using IMAP over port 993 with SSL/TLS enabled.

Cevap

The technician must restore DHCP server reachability on the wireless network segment to address the APIPA address assignment and configure the email client to use IMAP over port 993 with SSL/TLS encryption for secure email retrieval.

The presence of a

169.254.x.x

address indicates Automatic Private IP Addressing (APIPA), which occurs when the mobile device fails to contact a DHCP server; verifying DHCP service restores network access. Additionally, secure email synchronization using IMAP over SSL/TLS requires port 993, allowing encrypted message access while keeping mailbox states synchronized across endpoints.

Adım Adım Çözüm

Diagnose the wireless network IP configuration issue

The IP address

169.254.112.45

falls into the APIPA range (

169.254.0.0/16

), indicating that the device's DHCP client request failed or timed out.

Resolving DHCP availability or pool exhaustion on the wireless network segment allows the device to receive a valid IP address, subnet mask, default gateway, and DNS configuration.

Correct the mobile email client security and port settings

Securing IMAP traffic with SSL/TLS encryption standardizes communication on TCP port 993.

Port 993 provides secure, encrypted email retrieval over public cellular networks while maintaining server-side folder state across multiple endpoints.

Anahtar Kavram

Mobile Wireless IP Addressing (APIPA) and Secure Email Synchronization Protocols

Soru 3040Soru →

A network administrator is assigning a static IPv4 configuration to a server interface intended to host internal services. The interface is configured with the IP address 192.168.4.150 and a subnet mask of 255.255.255.192. The default gateway setting is entered as 192.168.4.194, and the primary DNS server is set to 192.168.4.2.

After saving the configuration, local network tests reveal that the server can successfully communicate with hosts in the range 192.168.4.129 through 192.168.4.190, but packets destined for off-subnet remote networks fail to reach their destination. Meanwhile, a junior technician suggests changing the primary DNS setting because they believe DNS servers lease IP addresses and update router gateways.

Which of the following correctly identifies why the server cannot reach remote networks?

The default gateway IP address resides outside the subnet boundary of the server's interface address, preventing off-subnet traffic forwarding.

The primary DNS server IP address must be changed to the DHCP server address because DNS is responsible for assigning IP leases and gateway routes.

The server automatically reverted to an APIPA address because the gateway address failed to validate dynamic address lease requests.

An unmanaged Layer 2 switch connected to the server is failing to perform inter-VLAN routing across subnet boundaries.

Cevabı ve açıklamayı göster

Cevap: The default gateway IP address resides outside the subnet boundary of the server's interface address, preventing off-subnet traffic forwarding.

Cevap

The default gateway IP address resides outside the subnet boundary of the server's interface address, preventing off-subnet traffic forwarding.

The correct answer identifies that the default gateway address (192.168.4.194) is outside the host's subnet (192.168.4.128/26, usable range .129 to .190). A node must be on the same IPv4 subnet as its default gateway to resolve the gateway's MAC address via ARP.

Adım Adım Çözüm

Determine the subnet subnetting parameters based on the network mask.

A subnet mask of 255.255.255.192 represents a /26 prefix length. The subnet increment (block size) in the fourth octet is

256 - 192 = 64

Calculating block size establishes the boundary markers for each subnet.

Identify the specific subnet range for the host IP address 192.168.4.150.

The host IP 192.168.4.150 falls within the fourth octet block starting at 128: Subnet ID: 192.168.4.128/26, Usable Range: 192.168.4.129 – 192.168.4.190, Broadcast: 192.168.4.191.

This establishes which IP addresses belong to the host's local broadcast domain.

Evaluate the location of the configured default gateway address 192.168.4.194.

The IP address 192.168.4.194 falls into the next subnet (192.168.4.192/26, range 192.168.4.193 – 192.168.4.254).

A host must be able to resolve the default gateway's MAC address directly on its local subnet via ARP. Since 192.168.4.194 is on a different subnet, the host cannot ARP for it directly, causing off-subnet packet transmission to fail.

Anahtar Kavram

IPv4 Subnet Boundaries & Default Gateway Placement

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