CCIE Routing and Switching Written

Here you have the best Cisco 400-101 practice exam questions

  • You have 33 total questions to study from
  • Each page has 5 questions, making a total of 7 pages
  • You can navigate through the pages using the buttons at the bottom
  • This questions were last updated on December 11, 2024
Question 1 of 33

Which Cisco IOS XE process administers routing and forwarding?

    Correct Answer: C

    The Cisco IOS process is responsible for implementing all forwarding and routing features for the router. It administers the routing and forwarding functionalities within the Cisco IOS XE software, making it the correct answer.

Question 2 of 33

Which circumstance can cause packet loss due to a microburst?

    Correct Answer: D

    Microbursts involve rapid spikes in data transmission over very short periods, often in microseconds. During a microburst, data packets can exceed the capacity of the network's buffer mechanisms. Insufficient buffers in network devices cannot handle the rapid influx, leading to packet loss. Therefore, insufficient buffers are the primary cause of packet loss due to a microburst.

Question 3 of 33

Refer to the exhibit.

Routers R1 and R2 are configured as shown, and traffic from R1 fails to reach host 209.165.201.254.

Which action can you take to correct the problem?

"Pass Any Exam. Any Time." - www.actualtests.com 24

    Correct Answer: A

    In the configuration provided, Router R2 is using the 'default-information originate' command to advertise a default route to Router R1 via OSPF. However, for this command to function, Router R2 needs an actual default route in its own routing table. Without it, R2 cannot propagate the default route to R1. Ensuring Router R2 has a default route in its routing table will allow it to advertise this route to R1, enabling R1 to forward traffic to the destination IP 209.165.201.254.

Question 4 of 33

Which two Cisco Express Forwarding tables are located in the data plane? (Choose two.)

    Correct Answer: A, E

    The Forwarding Information Base (FIB) and the adjacency table are both located in the data plane of Cisco Express Forwarding (CEF). The FIB maintains Layer 3 forwarding information used for IP routing, and the adjacency table maintains Layer 2 information for next hops as listed in the FIB. These tables are crucial for the actual packet forwarding process in the data plane.

Question 5 of 33

Refer to the exhibit.

Which statement describes the effect on the network if FastEthernet0/1 goes down temporarily?

    Correct Answer: A

    In the scenario where FastEthernet0/1 serves as the active interface and FastEthernet0/2 as the backup interface, if FastEthernet0/1 goes down temporarily, FastEthernet0/2 will take over and forward traffic as it transitions to active status. Once FastEthernet0/1 comes back up, because the preemption mode is off, FastEthernet0/2 will continue to forward traffic until explicitly switched back. Therefore, FastEthernet0/2 will forward traffic only until FastEthernet0/1 comes back up.