cisco 400-101 practice test

Exam Title: CCIE Routing and Switching Written

Last update: Nov 27 ,2025
Question 1

What are three valid HSRP states? (Choose three.)

  • A. listen
  • B. learning
  • C. full
  • D. established
  • E. speak
  • F. INIT
Answer:

A, B, E

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Question 2

External EIGRP route exchange on routers R1 and R2 was failing because the routers had duplicate
router IDs. You changed the eigrp router-id command on R1, but the problem persists. With
additional action must you take to enable the routers to exchange routes?

  • A. Change the corresponding loopback address.
  • B. Change the router ID on R2.
  • C. Reset the EIGRP neighbor relationship.
  • D. Clear the EIGRP process.
Answer:

D

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Question 3

Which two statement about the EIGRP Over the Top feature are true? (Choose two.)

  • A. EIGRP routers traffic between the PE devices.
  • B. Traffic is LISP-encapsulated on the control plan
  • C. The neighbor command must be configured with USP encapsulation on each CE device
  • D. The network statement must be configured on each PE device to connect separate EIGRP sites.
  • E. Traffic is LISP-encapsulated on the data plan
Answer:

C, E

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Question 4

Refer to the exhibit.

What are two effects of the given configuration? (Choose two.)

  • A. The router will fail to form neighbor adjacencies over all EIGRP interfaces except F0/0
  • B. The router will fail to form neighbor adjacencies over interfaces F0/0
  • C. The router will manually summarize the 192.168.12.0127 network
  • D. The router will install the 192.168.12.0/27 network into its EIGRP topology table
  • E. Auto-summarization will be enabled to the FO/O interface
Answer:

B, D

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Question 5

Which two statements about 1Pv6 6to4 tunnels are true? (Choose two)

  • A. Sites use addresses from the 2002::/16 prefix
  • B. Sites use addresses from link-local scope
  • C. They are point-to-multipoint tunnels
  • D. They are point-to-point tunnels
  • E. They rely on GRE encapsulation
Answer:

C, C

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Question 6

What is the source MAC address of a BPDU frame that is sent out of a port?

  • A. the lowest MAC address on the switch
  • B. the highest MAC address on the switch
  • C. the MAC address of the individual port that is sending the BPDU
  • D. the same as the MAC address in the bridge ID
Answer:

C

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Question 7

What command can you enter to configure NBAR to recognize VNC traffic?

  • A. ip nbar port-map VNC hex OxAA Ox1B
  • B. ip nbar custom-map VNC tcp-udp 5900 5901
  • C. ip nbar port-to-application seq 5 VNC tcp 5900 5901
  • D. ip nbar application-map VNC udp 5900 5901
  • E. ip nbar port-map VNC tcp 5900 5901
Answer:

E

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Question 8

Refer to the exhibit.

If the route to 10.1.1.1 is removed from the R2 routing table, which server becomes the master NTP
server?

  • A. R2
  • B. the NTP server at 10.3.3.3
  • C. the NTP server at 10.4 .4.4
  • D. the NTP server with the lowest stratum number
Answer:

D

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Question 9

How many address families can a single OSPFv3 instance support?

  • A. 1
  • B. 2
  • C. 5
  • D. 10
Answer:

A

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Question 10

Which two items must be confined to capture packet data with the Embedded Packet Capture
feature? (Choose two)

  • A. the capture point
  • B. the capture buffer
  • C. the capture file export location
  • D. the capture filter
  • E. the capture rate
  • F. the buffer memory size
Answer:

A, B

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