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Tüm alıştırma soruları

3551 soru

Tüm türler3,551Çoktan seçmeli1,809Çoklu seçim786Sayısal12Eşleştirme521Sıralama423
Soru 3081Soru →

A network administrator is documenting standard infrastructure services for an enterprise network audit. Match each network server role on the left with its primary function and associated default transport port/protocol parameters on the right.

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Öğeler

Syslog Server
NTP Server
DHCP Server
DNS Server

Eşleşmeler

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Cevap

Syslog Server pairs with aggregating system status messages and event logs using UDP port 514; NTP Server pairs with synchronizing time clock signals using UDP port 123; DHCP Server pairs with dynamically leasing network IP configurations using UDP ports 67/68; DNS Server pairs with resolving fully qualified domain names using UDP/TCP port 53.
Each core network server role performs a distinct service: Syslog collects diagnostic logging over UDP port 514; NTP maintains network-wide timestamp sync over UDP port 123; DHCP distributes network network IP settings dynamically over UDP ports 67/68; and DNS performs domain name resolution over port 53.

Adım Adım Çözüm

1
Identify the primary role and port for Syslog.
Syslog collects system logs and operational notifications across appliances over UDP port 514.
Centralized logging enables security monitoring and network auditing.
2
Identify the primary role and port for NTP.
NTP maintains synchronized clock timing across client nodes and network hardware over UDP port 123.
Timestamp consistency across logs and authentication protocols relies on clock accuracy.
3
Identify the primary role and port for DHCP.
DHCP leases dynamic IP addresses, default gateways, and subnet masks using UDP ports 67 and 68.
Automated IP management eliminates manual configuration overhead on end-user hosts.
4
Identify the primary role and port for DNS.
DNS resolves human-friendly names (such as domain names) to machine-routable IP addresses on port 53.
Name resolution enables network users to locate hosts without memorizing numerical IP addresses.

Anahtar Kavram

Network Host Services and Server Roles
Soru 3082Soru →

A technician is performing a battery calibration procedure on a corporate laptop to resolve inaccurate battery percentage reporting in the operating system. Place the steps of the battery calibration process in the correct order from first to last.

Öğeleri doğru sıraya koymak için sürükleyin

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Cevap

The correct calibration sequence begins with fully charging the battery to 100%, configuring power plan settings to prevent premature system sleep/hibernation, discharging the battery completely until shutdown, allowing the system to rest and cool down, and finally recharging the battery continuously back to 100% uninterrupted.
Battery calibration recalibrates the internal fuel gauge IC by forcing a full top-to-bottom charge cycle. The system must first be charged to 100%, OS power-saving limits disabled so it drains fully to hardware shutdown, rested to cool down, and uninterruptedly recharged to 100%.

Adım Adım Çözüm

1
Fully charge the laptop battery to 100%.
The top-end charge capacity threshold is registered by the power controller.
Establishes a known full-charge state before starting the full discharge cycle.
2
Disable automatic low-battery power actions (sleep/hibernate).
The operating system will not initiate automatic shutdown before true battery exhaustion.
Ensures the laptop runs until the hardware battery protection circuit cuts power at genuine zero state.
3
Unplug AC power and drain the battery until system power cuts off.
The battery registers its full discharge cycle threshold.
Measures the actual remaining discharge capacity against original design limits.
4
Allow the unpowered system to cool for 30 minutes.
Internal cell temperatures return to ambient levels.
Prevents thermal skewing of voltage measurements during the final charge sequence.
5
Plug in AC power and charge continuously back to 100%.
The fuel gauge IC syncs its full charge capacity metric with OS power diagnostics.
Completes the recalibration loop by establishing calibrated 0% and 100% thresholds.

Anahtar Kavram

Laptop Smart Battery Fuel Gauge Recalibration
Soru 3083Soru →

A technician is setting up network connectivity for a company's main office. The project requires connecting all desktop computers within a single office building to a shared local server, while also enabling remote employees working from different cities to securely access company resources over long distances. Which TWO of the following network types are required to support this configuration?

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Cevap: Local Area Network (LAN); Wide Area Network (WAN)

Cevap

The configuration requires a Local Area Network (LAN) for internal building connectivity and a Wide Area Network (WAN) for long-distance remote access.
Connecting devices localized within a single building requires a Local Area Network (LAN). Connecting workers located across different cities over broad geographic distances requires a Wide Area Network (WAN).

Adım Adım Çözüm

1
Analyze the internal office network requirement
Connecting desktops and a local server within a single office building corresponds to a Local Area Network (LAN).
LANs are designed for high-bandwidth communication within localized physical boundaries.
2
Analyze the remote employee connection requirement
Connecting users from distant cities across large geographic regions corresponds to a Wide Area Network (WAN).
WANs interconnect networks over expansive geographic zones.

Anahtar Kavram

Geographic Scope Classification of Networks (LAN vs WAN vs PAN vs MAN)
Soru 3084Soru →

A technician is setting up two wireless access points in a small office using the 2.4 GHz band. The first access point is configured to operate on channel 1. Which channel should be assigned to the second access point to avoid frequency overlap?

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Cevap: Channel 6

Cevap

Channel 6 should be assigned to the second access point to prevent frequency overlap with channel 1.
In the 2.4 GHz wireless spectrum, channels are spaced 5 MHz apart but are 20 to 22 MHz wide. To prevent adjacent-channel interference, access points must be separated by at least 5 channel numbers. The standard non-overlapping channels are 1, 6, and 11. Therefore, channel 6 is the correct choice to pair with channel 1.

Adım Adım Çözüm

1
Identify the operating band and initial channel setup.
The network operates on the 2.4 GHz frequency band with the first AP set to channel 1.
Knowing the frequency band determines the channel spacing rules required to prevent interference.
2
Determine the non-overlapping channel rule for the 2.4 GHz band.
The standard non-overlapping channels in North America/standard 2.4 GHz deployment are channels 1, 6, and 11.
Each 2.4 GHz channel is 22 MHz wide (or 20 MHz in 802.11n/ax) with 5 MHz channel spacing, requiring at least 5 channels of separation to eliminate overlap.
3
Select the valid non-overlapping channel option.
Channel 6 is 5 channels away from channel 1 and does not overlap in frequency.
Assigning channel 6 ensures optimal wireless performance without co-channel or adjacent-channel interference.

Anahtar Kavram

2.4 GHz Non-Overlapping Wi-Fi Channels
Soru 3085Soru →

A network technician is configuring service-specific firewall rules and remote client connections for an enterprise infrastructure. Match each network service requirement on the left with its corresponding default transport protocol and port number on the right.

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Öğeler

Encrypted directory service authentication and user queries using SSL/TLS (LDAPS)
Unauthenticated, connectionless firmware transfer for switch network booting (TFTP)
Encrypted email retrieval protocol maintaining server-side synchronization (IMAPS)
Automated network service discovery protocol for locating LAN resources (SLP)

Eşleşmeler

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Cevap

LDAPS matches TCP Port 636; TFTP matches UDP Port 69; IMAPS matches TCP Port 993; SLP matches TCP/UDP Port 427.
Each protocol correctly aligns with its default transport layer protocol and assigned port number according to standard CompTIA A+ networking specifications.

Adım Adım Çözüm

1
Identify the protocol and port for directory service security.
LDAPS operates over TCP port 636.
Security requirements mandate encrypted directory traffic using SSL/TLS rather than unencrypted LDAP on port 389.
2
Determine the transport protocol and port for simple boot file loading.
TFTP operates over UDP port 69.
TFTP uses UDP to eliminate connection overhead for lightweight firmware and boot image loading.
3
Identify the encrypted mailbox retrieval protocol and port.
IMAPS operates over TCP port 993.
IMAPS secures IMAP communications over TLS/SSL while keeping mail stored on the server.
4
Match the local network service discovery protocol.
SLP operates over TCP/UDP port 427.
SLP allows network devices to announce and locate local services over port 427.

Anahtar Kavram

Standard Network Protocols and Associated Default Ports
Soru 3086Soru →

A technician is preparing to replace a damaged screen on a laptop equipped with an Organic Light-Emitting Diode (OLED) display assembly. The technician checks the replacement parts inventory for a backlight inverter board. Why is an inverter board unnecessary for an OLED display panel?

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Cevap: OLED pixels generate their own light independently, so no separate backlight or inverter board is required.

Cevap

OLED pixels generate their own light independently, so no separate backlight or inverter board is required.
OLED (Organic Light-Emitting Diode) displays feature self-emissive pixels that produce their own illumination when electrical current passes through them. Because OLED panels do not require a separate backlighting assembly, they do not need an inverter board. Inverter boards are used exclusively in older LCD displays with CCFL backlights to convert DC power into high-voltage AC power.

Adım Adım Çözüm

1
Identify the display panel technology specified in the scenario.
The laptop uses an Organic Light-Emitting Diode (OLED) panel.
Display assembly components vary depending on whether the screen is CCFL LCD, LED-backlit LCD, or OLED.
2
Analyze the light source mechanism of OLED displays.
OLED displays are self-emissive, meaning each individual pixel illuminates independently when current is applied.
Because the pixels themselves emit light, OLED screens do not require a separate backlight structure.
3
Determine the necessity of an inverter board.
Inverter boards convert DC power to high-voltage AC power specifically for CCFL fluorescent backlights. Without a CCFL backlight, no inverter board is present in an OLED display assembly.
The absence of a backlight layer eliminates the requirement for power conversion by an inverter board.

Anahtar Kavram

OLED Self-Emissive Display Architecture vs. Inverter-Driven Backlighting
Soru 3087Soru →

A field technician is deploying network cables inside an industrial facility where cables will run through ceiling air handling spaces and near heavy machinery generating high electromagnetic interference (EMI). Which TWO cable specifications or construction features should the technician select for this environment? Select TWO.

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Cevap: Shielded Twisted Pair (STP) cabling to mitigate electromagnetic interference; Plenum-rated jacket insulation to comply with building fire safety standards

Cevap

The correct selections are Shielded Twisted Pair (STP) cabling to mitigate EMI and Plenum-rated jacket insulation to comply with building fire codes in air handling spaces.
Shielded Twisted Pair (STP) provides metallic shielding to block electromagnetic interference (EMI) from heavy machinery, while plenum-rated jacket insulation is flame-retardant and releases low smoke, meeting safety requirements for air handling plenum spaces.

Adım Adım Çözüm

1
Analyze environmental noise requirements
Industrial machinery generates heavy electromagnetic interference (EMI), requiring Shielded Twisted Pair (STP) cabling rather than Unshielded Twisted Pair (UTP).
STP incorporates metallic foil or braid shielding that blocks noise from external electrical equipment.
2
Analyze environmental space and fire safety requirements
Ceiling air handling spaces are classified as plenum spaces, requiring plenum-rated (CMP) cable jacketing.
Plenum cables resist fire and emit low toxic fumes if burned, whereas PVC cables emit hazardous gases in air circulation spaces.

Anahtar Kavram

Cable Shielding and Fire Rating Specifications
Soru 3088Soru →

A systems administrator is configuring firewall rules for a newly deployed application server. The server must host encrypted web traffic for external clients and permit network administrators to establish secure, encrypted remote command-line sessions over the network. Which of the following port and transport protocol combinations must be allowed through the firewall to support these requirements? (Select TWO.)

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Cevap: TCP port 443; TCP port 22

Cevap

TCP port 443 and TCP port 22
The requirement calls for hosting encrypted web traffic and enabling secure remote shell access. HTTPS provides encrypted web transport using TCP port 443, while SSH provides secure remote command-line management using TCP port 22.

Adım Adım Çözüm

1
Identify the protocol and port required for secure, encrypted web traffic.
Encrypted web browsing uses HTTPS, which communicates over TCP port 443.
HTTPS secures web traffic by encrypting HTTP communications with TLS/SSL on standard TCP port 443.
2
Identify the protocol and port required for secure remote command-line administration.
Secure command-line management uses SSH, which operates on TCP port 22.
SSH establishes encrypted administrative terminal sessions over connection-oriented TCP port 22.
3
Evaluate transport layer protocols and security characteristics against the wrong options.
UDP port 22 is incorrect because SSH requires TCP reliable delivery. TCP port 80 is incorrect because standard HTTP transmits data in plaintext.
Matching both the correct transport layer protocol (TCP vs UDP) and the secure port variant fulfills the scenario constraints.

Anahtar Kavram

Networking Ports and Protocols
Soru 3089Soru →

A network administrator is setting up access control rules on a firewall to permit secure, encrypted web browsing and secure inbound email retrieval via IMAP over SSL/TLS. Which TWO of the following default TCP ports must be allowed through the firewall to enable these services?

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Cevap: TCP port 443; TCP port 993

Cevap

The correct choices are TCP port 443 for secure web browsing (HTTPS) and TCP port 993 for secure email retrieval (IMAPS).
HTTPS operates on TCP port 443 to secure web browsing sessions, while IMAPS operates on TCP port 993 to securely retrieve emails over an encrypted connection.

Adım Adım Çözüm

1
Identify the standard port for secure web communications.
HTTPS uses TCP port 443.
Web traffic requiring SSL/TLS encryption uses HTTPS on port 443 instead of unencrypted HTTP on port 80.
2
Identify the standard port for secure IMAP email retrieval.
IMAPS uses TCP port 993.
IMAP traffic secured with SSL/TLS encryption uses port 993 instead of unencrypted IMAP on port 143.

Anahtar Kavram

Default port numbers for secure network protocols (HTTPS and IMAPS)
Soru 3090Soru →

A systems engineer is establishing communication boundaries for a logistics fulfillment hub. Match each operational scenario on the left with the corresponding network scope classification on the right.

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Öğeler

Connecting a handheld inventory scanner and mobile RFID printer attached to an automated sorting cart within a 2-meter workspace.
Linking dedicated NVMe storage nodes to database host servers over an isolated fiber channel fabric for block-level data access.
Interconnecting two automated warehouse facilities across a city municipality using leased dark fiber lines.
Bridging the central distribution hub with ten regional fulfillment facilities located in different geographical states across the country.

Eşleşmeler

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Cevap

Handheld scanner and RFID printer paired within a 2-meter cart workspace matches Personal Area Network (PAN); NVMe storage nodes linked to database hosts over dedicated fiber channel fabric matches Storage Area Network (SAN); Warehouses connected across a city municipality over dark fiber matches Metropolitan Area Network (MAN); Central hub bridging ten fulfillment centers across different states matches Wide Area Network (WAN).
Each scenario is correctly matched according to its geographical footprint and technical purpose. Scanners and cart printers within 2 meters form a Personal Area Network (PAN). High-speed NVMe block storage attached via Fiber Channel fabric forms a Storage Area Network (SAN). City-wide warehouse facilities linked via leased fiber form a Metropolitan Area Network (MAN). Multi-state facility connections spanning large distances form a Wide Area Network (WAN).

Adım Adım Çözüm

1
Analyze the spatial scale and functional design of each scenario.
Identified four distinct network requirements: ultra-short range peripheral pairing, high-speed block storage access, city-wide site connection, and multi-state connectivity.
CompTIA A+ scope classifications depend on geographic range, transport topology, and architectural purpose.
2
Classify the peripheral cart setup.
Small-scale connection (within ~10 meters) around an individual operator or work unit maps to PAN.
Personal Area Networks handle low-power, short-range device communications.
3
Classify the high-performance NVMe storage fabric.
Isolated storage traffic using Fiber Channel fabric maps to SAN.
Storage Area Networks detach high-volume block-level I/O traffic from standard user LAN networks.
4
Classify the municipal facility interconnects and multi-state WAN links.
City-wide connectivity maps to MAN; inter-state cross-country connectivity maps to WAN.
MANs are bounded by a single municipality or metropolitan area, whereas WANs span large multi-regional or national boundaries.

Anahtar Kavram

Network Scope Classification (PAN, SAN, MAN, WAN)
Soru 3091Soru →

A smartphone user inserts a new SIM card provided by their cellular carrier. To activate data services, the network operator requests the unique identifier assigned specifically to the subscriber account on the SIM card. Which identifier should be provided?

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Cevap: IMSI (International Mobile Subscriber Identity)

Cevap

IMSI (International Mobile Subscriber Identity)
IMSI (International Mobile Subscriber Identity) is the unique string of numbers assigned to a SIM card to identify and authenticate the subscriber on a cellular network.

Adım Adım Çözüm

1
Identify the cellular network provisioning requirement
The carrier needs the specific identification number associated with the SIM card subscriber account.
Cellular carriers use subscriber identifiers stored on SIM cards to authenticate access and link devices to specific service plans.
2
Differentiate between mobile hardware and subscriber identification terms
IMSI (International Mobile Subscriber Identity) uniquely identifies the user's cellular subscription on the SIM card, while IMEI identifies the physical device hardware.
Providing the IMSI satisfies the request for SIM-based subscriber provisioning.

Anahtar Kavram

Cellular Network Identifiers (IMEI vs. IMSI)
Soru 3092Soru →

A senior systems engineer is evaluating several infrastructure projects for an enterprise organization. Match each technical implementation scenario on the left with the correct network scope or physical topology classification on the right.

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Öğeler

Connecting enterprise NVMe-oF storage arrays to database clusters over a dedicated high-speed Fibre Channel fabric for block-level data access.
Interconnecting four mission-critical data center switches where every switch maintains a direct point-to-point link to every other switch to eliminate single points of failure.
Connecting multiple corporate office facilities located 15 miles apart within the same city municipality using leased dark fiber links.
Connecting client workstations individually via dedicated copper cabling to a central Ethernet switch located in a floor telecommunications room.

Eşleşmeler

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Cevap

1. Block-level Fibre Channel storage fabric → Storage Area Network (SAN); 2. All nodes interconnected via redundant point-to-point links → Full Mesh Topology; 3. Inter-facility connectivity spanning across a city → Metropolitan Area Network (MAN); 4. Workstations wired independently to a central switch → Star Topology.
Each deployment description aligns with key architectural definitions: block-level Fibre Channel storage networks represent a Storage Area Network (SAN); complete point-to-point redundancy across all nodes defines a Full Mesh Topology; inter-office fiber connectivity across city boundaries represents a Metropolitan Area Network (MAN); and host connections radiating from a central closet switch form a Star Topology.

Adım Adım Çözüm

1
Analyze the high-performance storage scenario
Identify block-level data access and dedicated Fibre Channel hardware separate from standard Ethernet LAN traffic.
High-speed networks dedicated exclusively to consolidating block-level storage devices for access by servers are defined as Storage Area Networks (SANs).
2
Analyze the multi-node connectivity redundancy requirements
Calculate interconnectivity where every node connects directly to every other node.
When nn network nodes are interconnected such that there are n(n−1)2\frac{n(n-1)}{2} direct connections, the layout is a Full Mesh Topology.
3
Analyze the geographical distance between the corporate facilities
Identify multi-building connectivity across a 15-mile municipal area.
Networks spanning across city boundaries or municipal regions using service provider dark fiber fall under the Metropolitan Area Network (MAN) scope.
4
Analyze the endpoint cabling infrastructure
Identify point-to-point client cable runs terminating at a centralized network device.
Host computers wired directly to ports on a central closet switch constitute a physical Star Topology.

Anahtar Kavram

Enterprise Network Classifications and Topologies
Soru 3093Soru →

A mobile device technician is provisioning corporate smartphones for field employees who require access to a private internal network resource while away from the office. During testing over the cellular network, the technician observes that public websites load without issue, and all internal services connect properly when connected to corporate Wi-Fi. However, attempts to access internal corporate applications over cellular data continuously time out. Which of the following is the most likely cause of this issue?

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Cevap: The smartphones are configured with a standard public APN rather than the corporate custom APN.

Cevap

The devices are configured with a standard public APN rather than the corporate custom APN.
An Access Point Name (APN) defines the network settings and gateway used when a mobile device connects to a cellular network. While standard APN profiles direct traffic to the public internet, corporate environments often require custom APN configurations to route mobile traffic into private enterprise networks or VPN gateways.

Adım Adım Çözüm

1
Analyze the network behavior across different transport mediums
Public internet routing over cellular is functioning, and full corporate access works over Wi-Fi, ruling out internal server outages or device firewall blocks.
Isolating the failure specifically to corporate resource access over cellular points to carrier-level routing configuration.
2
Evaluate cellular gateway connectivity requirements for private corporate networks
Accessing private internal enterprise resources over cellular networks requires configuring a custom Access Point Name (APN) profile.
The APN dictates the specific IP address space, proxy settings, and secure gateway path used by the carrier to route mobile traffic into a private network.
3
Identify the misconfiguration
Using default public APN settings routes all mobile data directly to the public internet, preventing access to private corporate endpoints.
Updating the APN profile to the specified corporate APN establishes the necessary routing path for internal application connectivity.

Anahtar Kavram

Access Point Name (APN) Configuration
Soru 3094Soru →

Match each enterprise mobile application security requirement or synchronization scenario on the left with the corresponding technical protocol, policy setting, or management scope on the right.

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Öğeler

Restricting the manual installation of unverified third-party application packages (.apk files) on Android smartphones.
Securing incoming mobile email traffic using SSL/TLS encryption over standard dedicated port assignments.
Removing corporate email and application data from a BYOD mobile device while leaving personal files intact.
Providing full two-way push synchronization of mobile email, contacts, and calendar items over HTTPS.

Eşleşmeler

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Cevap

1. Restricting manual installation of unverified APKs matches with Disabling application sideloading / Unknown Sources policy settings.
2. Securing incoming mobile email traffic via SSL/TLS matches with IMAPS using TCP port 993.
3. Removing corporate app data while leaving personal files intact matches with Selective wipe within a Mobile Application Management (MAM) container.
4. Providing full two-way push synchronization of email, contacts, and calendar items matches with Exchange ActiveSync (EAS) protocol.
Each requirement correctly aligns with its corresponding technology: Sideloading restrictions block unauthorized APK installation; IMAPS on TCP port 993 provides encrypted incoming email retrieval; MAM selective wiping isolates and removes corporate data on BYOD endpoints; and Exchange ActiveSync handles multi-data real-time synchronization.

Adım Adım Çözüm

1
Analyze security control scope for third-party application package installations.
Installing unapproved application files directly onto Android devices is known as sideloading, which is controlled via sideloading / unknown sources policies.
Security policies prevent malicious APK execution outside managed app stores.
2
Identify secure incoming mail protocols and default port numbers.
IMAPS encrypts incoming email using SSL/TLS over TCP port 993.
Standard unencrypted IMAP uses port 143, whereas secure IMAPS uses port 993.
3
Differentiate between Full Device Wipe (MDM) and Selective Wipe (MAM).
Selective wipe within a MAM container targets only enterprise data on BYOD devices.
MDM controls the whole device and performs full factory wipes, whereas MAM isolates corporate apps.
4
Determine the synchronization protocol supporting unified mail, contacts, and calendar sync.
Exchange ActiveSync (EAS) synchronizes all corporate PIM data types natively.
Standard POP3 or IMAP only synchronizes email messages, not calendar items or contacts.

Anahtar Kavram

Mobile Application Security and Mail Synchronization Protocols
Soru 3095Soru →

An IT technician is installing networking equipment for an office expansion containing two separate departments configured on distinct IP subnets. The technician must connect the two subnets so that network traffic can be inspected and forwarded based on destination IP addresses while keeping broadcast domains isolated. Which of the following network hardware devices should the technician deploy to enable communication between these subnets?

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Cevap: Router

Cevap

A router is required to interconnect distinct IP subnets and route network packets based on IP header information.
A router is a Layer 3 network hardware device specifically designed to route data packets between different IP networks and subnets. It inspects destination IP addresses and determines the appropriate path while isolating Layer 2 broadcast traffic within each individual network segment.

Adım Adım Çözüm

1
Identify the network layer requirement from the scenario.
The scenario requires connecting two separate IP subnets and isolating broadcast domains.
Communication across different IP subnets requires logical network-layer address processing (Layer 3).
2
Evaluate the functional capabilities of candidate hardware devices.
Routers process Layer 3 IP headers and maintain routing tables to forward traffic between distinct network segments.
Layer 2 switches only process Layer 2 MAC addresses within a single subnet and forward broadcast frames to all ports.
3
Select the hardware device that meets all criteria.
Deploying a router fulfills inter-subnet routing and broadcast isolation requirements.
Routers form the boundary between separate subnets and block Layer 2 broadcast traffic from crossing network segments.

Anahtar Kavram

Layer 3 Device Roles and Subnet Boundaries
Soru 3096Soru →

A smartphone user needs to purchase a cable that features a symmetrical, reversible physical connector capable of carrying power, data, and video signals on modern mobile devices. Which connector type satisfies these physical characteristics?

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Cevap: USB Type-C

Cevap

USB Type-C
The USB Type-C connector is a modern 24-pin compact port standard featuring a symmetrical, reversible design that allows insertion in either orientation while supporting data, charging, and display capabilities.

Adım Adım Çözüm

1
Identify the physical design requirements described in the scenario.
The requirement calls for a symmetrical, reversible physical connector used on modern mobile devices for power, video, and data.
USB Type-C was engineered specifically to replace legacy directional connectors with a compact, 24-pin reversible shape.
2
Distinguish between physical connector form factors and internal hardware/identifiers.
USB Type-C refers to the physical port interface, whereas Thunderbolt is a protocol, SO-DIMM is internal memory, and IMEI is a device serial number.
Connecting external cables requires selecting the correct physical port type.

Anahtar Kavram

Mobile Device USB Type-C Connector Characteristics
Soru 3097Soru →

A field technician configures a handheld logistics terminal that connects directly to a wearable barcode scanner and a wireless headset via short-range Bluetooth. While docked inside the warehouse facility, the terminal syncs inventory records over a local 802.11ax Wi-Fi network. Which of the following network scope classifications are implemented in this setup? (Select TWO).

Geçerli olan tümünü seçin

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Cevap: Personal Area Network (PAN) for the Bluetooth connections between the terminal and wearable peripherals; Wireless Local Area Network (WLAN) for the 802.11ax Wi-Fi connection within the warehouse facility

Cevap

The correct classifications are Personal Area Network (PAN) for the Bluetooth peripheral connectivity and Wireless Local Area Network (WLAN) for the facility Wi-Fi network.
Personal Area Networks (PANs) utilize short-range technologies like Bluetooth to link individual user devices and peripherals. Wireless Local Area Networks (WLANs) provide wireless network connectivity across a localized environment such as a single warehouse or building.

Adım Adım Çözüm

1
Identify the network scope for short-range Bluetooth peripherals paired directly to a user terminal.
Classify Bluetooth device pairing as a Personal Area Network (PAN).
PAN covers individual user space within a short range (typically under 10 meters).
2
Identify the network scope for 802.11ax Wi-Fi coverage within a single building or warehouse facility.
Classify facility-wide Wi-Fi connectivity as a Wireless Local Area Network (WLAN).
WLAN provides wireless connectivity constrained within a single localized area or building.

Anahtar Kavram

Network Scope Classifications (PAN, WLAN, LAN, MAN, WAN)
Soru 3098Soru →

A helpdesk technician is troubleshooting an ultra-thin corporate laptop equipped with an Organic Light-Emitting Diode (OLED) display. The screen remains completely dark during power-on, although system indicators light up and an external monitor connected via DisplayPort displays the desktop normally. A junior technician recommends ordering a replacement high-voltage backlight inverter board to resolve the issue. Which of the following is the most accurate assessment of this recommendation?

Cevabı ve açıklamayı göster

Cevap: The recommendation is incorrect because OLED displays utilize self-emissive pixels and do not incorporate a backlight or inverter board.

Cevap

The recommendation is incorrect because OLED displays utilize self-emissive pixels and do not incorporate a backlight or inverter board.
OLED (Organic Light-Emitting Diode) displays generate light directly at each pixel when electric current is applied. Because they do not use a separate backlight, they do not require high-voltage inverter boards (which were used in legacy CCFL LCD displays) or LED driver circuits to power an external light grid.

Adım Adım Çözüm

1
Analyze the reported symptom and hardware specifications
The laptop power-on self-test (POST) completes and external video works, confirming the GPU and main logic board are functioning. The internal display is an OLED panel.
Isolates the problem specifically to the internal display panel assembly or its internal power/data connection.
2
Evaluate OLED illumination architecture versus traditional LCD architecture
OLED panels feature self-emissive pixels that produce light individually when energized, eliminating the need for a separate backlight or high-voltage inverter board.
Determines whether an inverter board exists in an OLED laptop display assembly.
3
Assess the junior technician's recommendation
Ordering an inverter board for an OLED laptop is an invalid action, as the component does not exist within OLED display architecture.
Prevents unnecessary hardware ordering and guides proper diagnostic steps (such as checking the eDP display cable or replacing the OLED panel assembly).

Anahtar Kavram

OLED vs LCD Display Architecture and Backlighting Requirements
Tahmini Süre:2m 0s
Soru 3099Soru →

A network technician is troubleshooting severe throughput degradation and frequent frame retransmissions across three neighboring wireless access points deployed in a medical office building. A spectrum analysis reveals that the access points are operating on the 2.4 GHz band and are currently configured on Channel 1, Channel 4, and Channel 8. Which of the following channel reconfigurations should the technician implement to completely eliminate adjacent-channel interference (ACI) while maintaining optimal 2.4 GHz wireless coverage?

Cevabı ve açıklamayı göster

Cevap: Reassign the three access points to non-overlapping Channels 1, 6, and 11.

Cevap

Reassigning the access points to non-overlapping Channels 1, 6, and 11 is the correct configuration.
In the 2.4 GHz wireless spectrum, individual channels are spaced 5 MHz apart, but a standard 802.11 channel requires 20 MHz of channel width (plus 2 MHz total guard band). Consequently, only Channels 1, 6, and 11 offer complete frequency separation without overlapping each other. Changing the deployment to use Channels 1, 6, and 11 removes adjacent-channel interference entirely.

Adım Adım Çözüm

1
Analyze the existing 2.4 GHz channel assignment.
Channels 1, 4, and 8 share overlapping frequency spectrum because each 2.4 GHz channel occupies 22 MHz of bandwidth (20 MHz channel width plus guard bands) with center frequencies spaced only 5 MHz apart.
Channels 4 and 8 partially overlap with Channels 1 and 6, causing destructive adjacent-channel interference (ACI).
2
Identify the standard non-overlapping 2.4 GHz channels for 20 MHz channel width.
Channels 1 (2.412 GHz), 6 (2.437 GHz), and 11 (2.462 GHz) provide at least 25 MHz of center frequency separation.
This separation ensures zero spectral overlap between adjacent coverage cells.
3
Select the configuration that eliminates adjacent-channel interference.
Assigning one access point to Channel 1, the second to Channel 6, and the third to Channel 11 isolates the channels cleanly.
This configuration restores full throughput and eliminates frame corruption caused by ACI.

Anahtar Kavram

2.4 GHz Non-Overlapping Channel Selection
Tahmini Süre:2m 0s
Soru 3100Soru →

A field technician is performing hardware diagnostics and component identification across various laptop display assemblies. Match each laptop display component on the left to its corresponding operational function or architectural characteristic on the right.

Soldaki öğeye tıklayın, sonra eşleşen sağdaki öğeye tıklayın

Öğeler

Inverter Board
Digitizer Panel
OLED Display Module
Wi-Fi Antenna Harness

Eşleşmeler

Cevabı ve açıklamayı göster

Cevap

Inverter Board matches converting low-voltage DC to high-voltage AC for CCFL backlights; Digitizer Panel matches translating physical touch contact into digital coordinates; OLED Display Module matches emitting light per pixel without needing a backlight or inverter; Wi-Fi Antenna Harness matches routing coaxial wiring through display hinges to the top bezel for wireless reception.
Matching each display assembly component to its exact role accurately reflects mobile hardware standards. Inverter boards step up DC to high-voltage AC for CCFL tubes. Digitizers map physical touch interactions to digital coordinates. OLED technology utilizes self-illuminating pixels eliminating backlights and inverters. Antenna leads are routed through screen hinges into the display bezel to maintain clear radio frequency reception.

Adım Adım Çözüm

1
Analyze the function of power conversion components in displays
Identify the Inverter Board as the power converter transforming DC to high-voltage AC specifically required for legacy CCFL backlights.
LED and OLED displays do not utilize high-voltage AC inverters.
2
Evaluate touch input conversion hardware
Map the Digitizer Panel to translating analog user contact/touch into digital positional data.
The digitizer grid is responsible for touch sensitivity, distinct from the rendering display panel underneath.
3
Distinguish modern display panel lighting technologies
Associate the OLED Display Module with self-emitting organic pixels that require neither a central backlight nor an inverter.
OLED pixels illuminate independently when energized.
4
Identify wireless hardware integration inside laptop display lids
Match the Wi-Fi Antenna Harness to routing coaxial cables up through display hinges into the upper lid bezel.
Placing antenna leads high in the display bezel provides optimal wireless propagation away from dense lower-chassis metallic components.

Anahtar Kavram

Laptop Display Assembly Architecture and Component Roles
Tahmini Süre:2m 0s
ÖncekiSayfa 155 / 178Sonraki
Tüm alıştırma soruları — CompTIA A+ (Core 1 & Core 2) | Examkin