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By cisco
Aug, 2025

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25Q per page

Question 1

A network administrator needs to configure port security on a switch. Which two statements are true? (Choose two.)

  • A: The network administrator can apply port security to dynamic access ports.
  • B: The network administrator can apply port security to EtherChannels.
  • C: The sticky learning feature allows the addition of dynamically learned addresses to the running configuration.
  • D: When dynamic MAC address learning is enabled on an interface, the switch can learn new addresses, up to the maximum defined.
  • E: The network administrator can configure static secure or sticky secure MAC addresses in the voice VLAN.
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Question 2

Which command can you enter to view the ports that are assigned to VLAN 20?

  • A: Switch#show ip interface vlan 20
  • B: Switch#show vlan id 20
  • C: Switch#show ip interface brief
  • D: Switch#show interface vlan 20
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Question 3

How does a router handle an incoming packet whose destination network is missing from the routing table?

  • A: It broadcasts the packet to each interface on the router.
  • B: It broadcasts the packet to each network on the router.
  • C: It routes the packet to the default route.
  • D: It discards the packet. C
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Question 4

In which two formats can the IPv6 address fd15:0db8:0000:0000:0700:0003:400F:572B be written? (Choose two.)

  • A: fd15:0db8:0000:0000:700:3:400F:527B
  • B: fd15::db8::700:3:400F:527B
  • C: fd15:db8:0::700:3:4F:527B
  • D: fd15:0db8::7:3:4F:527B
  • E: fd15:db8::700:3:400F:572B
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Question 5

Which statement about spanning-tree root-bridge election is true?

  • A: Every root bridge must reside on the same root switch.
  • B: Every VLAN must use the same root bridge.
  • C: It is always performed automatically.
  • D: Each VLAN must have its own root bridge.
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Question 6

Which two steps must you perform to enable router-on-a-stick on a switch? (Choose two.)

  • A: Configure the subinterface number exactly the same as the matching VLAN.
  • B: Assign the access port to a VLAN.
  • C: Configure an IP route to the VLAN destination network.
  • D: Connect the router to a trunk port.
  • E: Configure full duplex.
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Question 7

Image 1

Refer to the exhibit. What is the metric for the route from R1 to 192.168.10.1?

  • A: 2
  • B: 90
  • C: 110
  • D: 52778
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Question 8

When an interface is configured with PortFast BPDU guard, how does the interface respond when it receives a BPDU?

  • A: It continues operating normally.
  • B: It goes into a down/down state.
  • C: It becomes the root bridge for the configured VLAN.
  • D: It goes into an errdisable state.
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Question 9

Which symptom most commonly indicates that two connecting interfaces are configured with a duplex mismatch?

  • A: an interface with a down/down status
  • B: the spanning-tree process shutting down
  • C: collisions on the interface
  • D: an interface with an up/down status
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Question 10

Which three technical services support cloud computing? (Choose three.)

  • A: IP localization
  • B: VPN connectivity
  • C: extended SAN services
  • D: redundant connections
  • E: Layer 3 network routing
  • F: network-monitored power sources
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Question 11

Which two statements about syslog logging are true? (Choose two.)

  • A: The size of the log is dependent on the resources of the device.
  • B: Messages can be erased when the device reboots.
  • C: Messages are stored external to the device.
  • D: Messages are stored in the internal memory of the device.
  • E: Syslog logging is disabled by default.
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Question 12

What are three characteristics of the TCP protocol? (Choose three.)

  • A: It uses a single SYN-ACK message to establish a connection.
  • B: The connection is established before data is transmitted.
  • C: It ensures that all data is transmitted and received by the remote device.
  • D: It supports significantly higher transmission speeds than UDP.
  • E: It requires applications to determine when data packets must be retransmitted.
  • F: It uses separate SYN and ACK messages to establish a connection.
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Question 13

Instructions:

  • Enter IOS commands on the device to verify network operation and answer the multiple questions.
  • THIS TASK DOES NOT REQUIRE REVICE CONFIGURATION.
  • Click the device icon to gain access to the console device of the router. No console or enable passwords are required.
  • To access the multiple-choice questions, click the numbered boxes on the left of the top panel.
  • there are four multiple-choice questions with this task. Be sure to answer all four questions before clicking Next button.
    Scenario:
Image 1

Refer to the topology. Your company has connected the routers R1, R2, and R3 with serial links. R2 and R3 are connected to the switches SW1 and SW2, respectively. SW1 and SW2 are also connected to the routers R4 and R5.
The EIGRP routing protocol is configured.
You are required to troubleshoot and resolve the EIGRP issues between the various routers.
Use the appropriate show commands to troubleshoot the issues.
The loopback interfaces on R4 with the IP addresses of 10.4.4.4/32, 10.4.4.5/32 and 10.4.4.6/32 are not appearing in the routing table of R5.
Why are the interfaces missing?

  • A: The interfaces are shutdown, so they are not being advertised.
  • B: R4 has been incorrectly configured to be in another AS, so it does not peer with R5.
  • C: Automatic summarization is enabled, so only the 10.0.0.0 network is displayed.
  • D: The loopback addresses haven’t been advertised, and the network command is missing on R4.
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Question 14

Scenario -
Refer to the topology. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links.
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices.
Use appropriate show commands to troubleshoot the issues and answer all four questions.

Instructions -

Image 1 Image 2 Image 3 Image 4 Image 5 Image 6 Image 7 Image 8

An OSPF neighbor adjacency is not formed between R3 in the main office and R4 in the Branch1 office. What is causing the problem?

  • A: There is an area ID mismatch.
  • B: There is a Layer 2 issue; an encapsulation mismatch on serial links.
  • C: There is an OSPF hello and dead interval mismatch.
  • D: The R3 router ID is configured on R4.
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Question 15

Which two options describe benefits of aggregated chassis technology? (Choose two.)

  • A: It supports redundant configuration files.
  • B: It reduces management overhead.
  • C: It requires only three IP addresses per VLAN.
  • D: It requires only one IP address per VLAN.
  • E: It supports HSRP, VRRP, and GLBP.
  • F: Switches can be located anywhere regardless of their physical distance from one another.
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Question 16

When a router is unable to find a known route in the routing table, how does it handle the packet?

  • A: It sends the packet over the route with the best metric.
  • B: It sends the packet to the gateway of last resort.
  • C: It sends the packet to the next hop address.
  • D: It discards the packet.
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Question 17

Scenario -
Refer to the topology. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links.
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices.
Use appropriate show commands to troubleshoot the issues and answer all four questions.

Instructions -

Image 1 Image 2 Image 3 Image 4 Image 5 Image 6 Image 7 Image 8

An OSPF neighbor adjacency is not formed between R3 in the main office and R5 in the Branch2 office. What is causing the problem?

  • A: There is an area ID mismatch.
  • B: There is a PPP authentication issue; a password mismatch.
  • C: There is an OSPF hello and dead interval mismatch.
  • D: There is a missing network command in the OSPF process on R5. C
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Question 18

Which function does the IP SLAs ICMP Echo operation perform to assist with troubleshooting?

  • A: packet-loss detection
  • B: congestion detection
  • C: hop-by-hop response time
  • D: one way jitter measurements
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Question 19

In which byte of an IP packet can traffic be marked?

  • A: the ToS byte
  • B: the QoS byte
  • C: the CoS byte
  • D: the DSCP byte
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Question 20

Scenario -
Refer to the topology. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links.
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices.
Use appropriate show commands to troubleshoot the issues and answer all four questions.

Instructions -

Image 1 Image 2 Image 3 Image 4 Image 5 Image 6 Image 7 Image 8

R1 does not form an OSPF neighbor adjacency with R2. Which option would fix the issue?

  • A: R1 ethernet0/1 is shutdown. Configure no shutdown command.
  • B: R1 ethernet0/1 configured with a non-default OSPF hello interval of 25; configure no ip ospf hello-interval 25
  • C: R2 ethernet0/1 and R3 ethernet0/0 are configured with a non-default OSPF hello interval of 25; configure no ip ospf hello-interval 25
  • D: Enable OSPF for R1 ethernet0/1; configure ip ospf 1 area 0 command under ethernet0/1. B
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Question 21

Which six-byte field in a basic Ethernet frame must be an individual address?

  • A: SOF
  • B: FCS
  • C: DA
  • D: SA
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Question 22

DRAG DROP -
Drag each category on the left to its corresponding router output line on the right. Each router output line is in the result of a show ip interface command. Not all categories are used.
Select and Place:

Image 1
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Question 23

Scenario -
Refer to the topology. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links.
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices.
Use appropriate show commands to troubleshoot the issues and answer all four questions.

Instructions -

Image 1 Image 2 Image 3 Image 4 Image 5 Image 6 Image 7 Image 8

An OSPF neighbor adjacency is not formed between R3 in the main office and R6 in the Branch3 office. What is causing the problem?

  • A: There is an area ID mismatch.
  • B: There is a PPP authentication issue; the username is not configured on R3 and R6.
  • C: There is an OSPF hello and dead interval mismatch.
  • D: The R3 router ID is configured on R6. D
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Question 24

What are two requirements for an HSRP group? (Choose two)

  • A: exactly one active router
  • B: one or more standby routers
  • C: one or more backup virtual routers
  • D: exactly one standby active router
  • E: exactly one backup virtual router
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Question 25

If primary and secondary root switches with priority 16384 both experience catastrophic losses, which tertiary switch can take over?

  • A: a switch with priority 20480
  • B: a switch with priority 8192
  • C: a switch with priority 4096
  • D: a switch with priority 12288
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