Tüm alıştırma soruları

Under the Cisco Split-MAC architecture, a Lightweight Access Point (LAP) operates in Local mode. Which task is handled directly by the access point rather than being offloaded to the Wireless LAN Controller (WLC)?

A network administrator is reconfiguring interface GigabitEthernet0/2 on a Cisco Catalyst switch. The interface is currently connected to a trunking partner device and is actively operating as an 802.1Q trunk port via Dynamic Trunking Protocol (DTP). The administrator enters the following interface configuration command:

Switch(config-if)# switchport access vlan 50

VLAN 50 does not currently exist in the switch VLAN database. Assuming all other configuration settings remain at default, what is the resulting operational state of interface GigabitEthernet0/2 and VLAN 50?

An enterprise network deployment hosts multiple business-critical server workloads on a bare-metal Type 1 hypervisor. The hypervisor is connected via a dual-homed physical 10GbE uplink to an upstream Layer 3 switch. Inside the hypervisor, a internal virtual switch (vSwitch) connects multiple virtual machines (VMs) assigned to VLAN 10. If a virtual machine on VLAN 10 emits an Ethernet broadcast frame (destination MAC FF:FF:FF:FF:FF:FF) during an ARP resolution request, how do these virtual and physical infrastructure components process and scope the broadcast traffic?

An enterprise router is configured with the following extended IPv4 access control list applied inbound on interface GigabitEthernet0/0/0:

text ip access-list extended SECURE_APP permit tcp 172.16.5.0 0.0.0.255 host 10.0.1.20 eq 80 permit ip host 172.16.5.10 host 10.0.1.20

Host A (IP address 172.16.5.15) attempts to establish an HTTPS connection (TCP port 443) to the application server at 10.0.1.20. Which statement accurately describes how the router processes this traffic?

Refer to the following Cisco IOS CLI output from switch Switch-A:

text
Switch-A# show interfaces fastEthernet 0/1
FastEthernet0/1 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 0007.ebaa.1101
Full-duplex, 100Mb/s, media type is 100BASE-TX
...
12540 input errors, 12538 CRC, 0 frame, 0 overrun, 0 ignored
0 output errors, 0 collisions, 0 late collisions, 0 deferred

Switch-A connects directly to Switch-B over a 10-meter Category 5e UTP cable. Switch-B reports high counts of late collisions on its corresponding interface. Which condition is the root cause of these interface symptoms?

An organization is designing its enterprise edge network architecture. The design places a Layer 3 switch in the distribution layer to route traffic between local VLANs and places a Next-Generation Firewall (NGFW) at the WAN/Internet perimeter. Which statement correctly distinguishes the operational role of the Next-Generation Firewall from that of the Layer 3 switch in this deployment?

Router R3 has OSPFv2 configured and active. When the OSPF process initialized, the operational statuses of its interfaces were as follows:

- GigabitEthernet0/0 (IP: 192.168.10.1/24): Up / Line Protocol: Up
- GigabitEthernet0/1 (IP: 10.254.254.1/24): Up / Line Protocol: Up
- Loopback10 (IP: 172.16.1.1/24): Up / Line Protocol: Down
- Loopback20 (IP: 172.16.2.1/24): Up / Line Protocol: Up
- Loopback30 (IP: 172.16.3.1/24): Administratively Down / Line Protocol: Down

Shortly after initialization, a network administrator configured the command `router-id 1.1.1.1` under `router ospf 1`. No additional commands or resets were executed on the router.

What is the active OSPFv2 Router ID currently used by Router R3?

Five Cisco routers—R1, R2, R3, R4, and R5—are connected to a single Layer 2 Ethernet switch on the 10.1.1.0/24 multiaccess network segment running OSPFv2 in Area 0.

The initial boot sequence and interface configurations are as follows:
- R1 boots first with interface OSPF priority 1 and Router ID 1.1.1.1.
- R2 boots second with interface OSPF priority 1 and Router ID 2.2.2.2.
- Once R1 and R2 finish establishing adjacencies, R3 (priority 2, Router ID 3.3.3.3), R4 (priority 0, Router ID 4.4.4.4), and R5 (priority 255, Router ID 5.5.5.5) are booted simultaneously.

After all adjacencies reach the FULL state across the segment, R1 suffers a power failure and goes offline. Assuming no OSPF processes were reset manually prior to the failure, which router will be promoted to DR and which router will be elected as the new BDR?

A network engineer connects a Cisco Lightweight Access Point (AP) to an 802.1Q trunk interface on a Layer 2 access switch. The AP is intended to join a Wireless LAN Controller (WLC) via its management interface using untagged CAPWAP control traffic. The switch port is configured with $switchport\ mode\ trunk$ and $switchport\ trunk\ native\ vlan\ 50$. However, the AP fails to establish a CAPWAP tunnel, and syslog messages on the switch indicate native VLAN mismatch errors. CDP neighbor outputs confirm that the switch expects tagged traffic on VLAN 1 while transmitting native frames on VLAN 50. Which switchport configuration change correctly resolves the AP's management access failure while allowing untagged CAPWAP discovery traffic?

A network engineer on router R1 configures dynamic Network Address Translation using an IP pool containing two public addresses ($203.0.113.1$ to $203.0.113.2$) to service the internal subnet $172.16.10.0/24$. Access Control List 10 permits traffic from $172.16.10.0/24$. The router configuration includes the statement `ip nat inside source list 10 pool NAT_POOL`. During peak operating hours, users report that after two simultaneous connections are established, all additional internal hosts fail to reach external destinations. Output from `show ip nat statistics` displays active translations at maximum pool capacity with zero port translation entries. Which configuration change will allow all internal hosts to share the public addresses concurrently?

Router R1 learns the destination prefix $172.16.10.0/24$ dynamically via OSPF with a default Administrative Distance of 110. A network administrator needs to implement a floating static route to $172.16.10.0/24$ via next-hop IP $192.168.12.2$ to serve as a backup path.

Which TWO statements correctly describe the configuration requirements and routing table behavior for this floating static route? (Select TWO.)

An enterprise network has four routers—R1, R2, R3, and R4—connected to a shared Layer 2 Ethernet switch on the 10.10.10.0/24 subnet operating with default OSPFv2 configurations on a broadcast network type. Currently, R1 is functioning as the Designated Router (DR) with an interface priority of 1 and Router ID 1.1.1.1. R2 is functioning as the Backup Designated Router (BDR) with an interface priority of 1 and Router ID 2.2.2.2. R3 has its interface priority set to 0 and Router ID 3.3.3.3.

A network administrator brings up a fifth router, R5, on the same Ethernet segment with a Router ID of 5.5.5.5 and executes the following commands:

text
R5(config)# interface GigabitEthernet0/0
R5(config-if)# ip ospf priority 255

After R5 establishes FULL adjacencies with the existing routers, which two statements correctly describe the resulting OSPF DR/BDR election state and operation on this segment? (Select TWO.)

A network administrator is implementing Layer 2 security on VLAN 30 of a Cisco Catalyst switch. The VLAN contains both dynamic DHCP clients and devices with statically configured IP addresses. DHCP Snooping is active on VLAN 30.

To allow traffic from the static IP devices that do not exist in the DHCP snooping binding database, the administrator creates an ARP Access Control List (ACL) named `STATIC_DEVICES` matching the static MAC and IP pairs, and executes the following command:

`Switch(config)# ip arp inspection filter STATIC_DEVICES vlan 30`

Immediately after applying this command, static IP hosts communicate successfully, but all dynamic DHCP clients on VLAN 30 lose connectivity because their ARP packets are dropped by Dynamic ARP Inspection (DAI).

Which configuration modification must be made to permit ARP traffic from both static IP devices and dynamic DHCP clients?

An administrator observes intermittent data corruption and dropped frames on interface `GigabitEthernet0/1` of an enterprise switch. Executing the `show interfaces GigabitEthernet0/1` command yields the following output:

text
GigabitEthernet0/1 is up, line protocol is up (connected)
Hardware is GigabitEthernet, address is 0012.7f3e.a101
Full-duplex, 1000Mb/s, media type is 1000BaseTX
Input queue: 0/75/0/0; Total output drops: 0
5 minute input rate 12000 bits/sec, 15 packets/sec
5 minute output rate 11000 bits/sec, 14 packets/sec
124501 packets input, 15890123 bytes
0 runts, 0 giants, 0 throttles
4812 input errors, 4812 CRC, 0 frame, 0 overrun, 0 ignored
0 output errors, 0 collisions, 0 late collision

Based on the CLI output, what is the most likely root cause of the reported interface errors?

A host network interface is configured with the MAC address 0011.2233.4455. When the host generates a 64-bit IPv6 interface identifier using the standard EUI-64 process, which value is created?

A network engineer is configuring an interface on a Cisco router servicing an internal LAN segment. The interface is assigned the IPv4 address $192.168.1.37$ with a subnet mask of $255.255.255.240$ ($/28$). Which IPv4 address represents the broadcast address for this subnetwork?

Network administrators use Layer 2 discovery protocols to discover adjacent network hardware and verify topology details. Match each Layer 2 discovery protocol attribute on the left with its corresponding protocol characteristic or default value on the right.

An administrator is configuring a trunk link between Switch-1 and Switch-2. On Switch-1 interface GigabitEthernet0/1, the engineer executes the following configuration commands:

Switch-1(config-if)# switchport mode trunk
Switch-1(config-if)# switchport trunk native vlan 20
Switch-1(config-if)# switchport trunk allowed vlan 10,30,40

Assuming Switch-2 has default 802.1Q trunk configurations with native VLAN 20 allowed, how will Switch-1 process frame forwarding for VLAN 20 traffic egressing interface GigabitEthernet0/1?

During an operational review of network infrastructure policies across an enterprise gateway router, a network specialist is defining classification parameters for transport layer protocols. Which two statements accurately describe the architectural characteristics and operational mechanics of the User Datagram Protocol (UDP) compared to Transmission Control Protocol (TCP)? (Select two.)

A network administrator is assigning a private IPv4 host address within the $172.16.0.0/12$ range for a branch office subnet defined as $172.30.50.16/28$. Which IPv4 address is a valid usable host address for a device in this subnet?