Most Accurate Cisco 400-101 Exam Q&A Online

Question No. 1

What is the reason to send an EIGRP SIA reply to a peer?

• A. To respond to a query reporting that the prefix has gone stuck-in-active
• B. To respond to an SIA query that the router is still waiting on replies from its peers
• C. To respond to a reply reporting that the prefix has gone stuck-in-active
• D. To respond to an SIA query with the alternative path requested

Question No. 2

In which 802.1D port state are the root bridge. the root port, and the designated port(s) elected?

• A. Listening
• B. Forwarding
• C. Learning
• D. Disabled
• E. Blocking

Question No. 3

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.

Question No. 4

For which two purposes can RTCP be used? (Choose two )

• A. Collecting information about VoIP service quality.
• B. Providing resource reservation service for VoIP traffic.
• C. Providing out-of-band statistics and control information for RTP sessions.
• D. Authenticating RTP sessions.
• E. Providing encryption for RTP flows.

Question No. 5

How are the Cisco express forwarding table and the FIB related each other?

• A. Cisco express forwarding uses a FIB to make IP destination prefix-based switching decisions.
• B. There can be only one FIB but multiple Cisco Express forwarding tables on ISO devices.
• C. The Cisco express forwarding table allows route lookups to be forwarding to the route processor
• D. The FIB is used to populate the Cisco Express forwarding table.

Question No. 6

Which two statements about the command distance bgp 90 60 120 are true? (Choose two.)

• A. Implementing the command is a Cisco best practice.
• B. The external distance it sets is preferred over the internal distance.
• C. The internal distance it sets is preferred over the external distance.
• D. The local distance it sets may conflict with the EIGRP administrative distance.
• E. The internal distance it sets may conflict with the EIGRP administrative distance.
• F. The local distance it sets may conflict with the RIP administrative distance

Question No. 7

Refer to the exhibit.

You must modify the Cisco IOS Layer 3 switch configuration for high availability operation. Which additional configuration is needed, if any?

• A. Modify the configuration to use VRRP, which has additional functionality that works better for high availability.
• B. This configuration is sufficient for high availability functionality.
• C. Enable HSRP preempt to force the primary Layer3 switch to resume the master role after a failure.
• D. Enable SHRP preempt a delay to allow time for the routing and switching to converge.

Question No. 8

Which option describes how a router responds if LSA throttling is configured and it receives the identical LSA before the interval is set?

• A. The LSA is ignored
• B. The LSA is ignored and a notification is sent to the sending router to slow down its LSA packet updates
• C. The LSA is added to the OSPF database
• D. The LSA is added to the OSPF database and a notification is sent to the sending router to slow down its LSA packet updates

Question No. 9

Which way to influence path selection with EIGRP is preferred?

• A. changing the bandwidth, because it does not have any impact on other router features.
• B. changing the bandwidth, because that is what Cisco recommends.
• C. changing the bandwidth, because ii must be done only on one interface along the path.
• D. changing the delay, even if it must be done on multiple interfaces

Question No. 10

Which two statements about the Cisco Express Forwarding glean adjacency type are true? (Choose

two)

• A. Packets destined for the interface can be dropped, which provide a form of access filtering.
• B. The adjacency database is used to gather specific prefixes when packets are destined to a specific
• C. The router FIB table maintains a prefix for the subnet instead of individual hosts.
• D. Packets destined for the interface are discarded and the prefix is checked.
• E. Packets destined for the interface are discarded and the prefix check is skipped

Question No. 11

Which tunneling method can transmit IPv6 traffic over an MPLS infrastructure?

• A. 6PE
• B. 6to4
• C. ISATAP
• D. 6RD

Question No. 12

Which feature forces a new Diffie-Hellman key exchange each time data is transmitted over a IPsec tunnel?

• A. PFS
• B. rsa-encr authentication
• C. rsa-sig authentication
• D. 802.1x
• E. CRACK authentication

Question No. 13

With PBR and set ip next-hop configured on an incoming interface. how does the router forward the packet with the next-hop being unreachable?

• A. The packet is forwarded using the normail routing table.
• B. The packet is policy routed.
• C. The next is added to the route table and the packet is policy routed.
• D. The packet is dropped.

Question No. 14

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

Question No. 15

Which two statements about PPP PAP are true? (Choose two.)

• A. It can protect against playback attacks.
• B. An authenticated peer is periodically requested to re authenticate itself during the PPP session lifetime.
• C. Login attempts are controlled by the node that authenticates itself.
• D. It is vulnerable to trial-and-error attacks.
• E. In two-way authentication scenarios > It requires the use of the same password.

Question No. 16

In a DMVPN topology, which value can be used to authenticate spoke routers to the hub?

• A. hostname
• B. pre-shared key
• C. IP address
• D. username

Question No. 17

Which LSA type is associated with the default route in a totally stubby area?

• A. interarea-prefix LSA for ABRs (Type 3).
• B. interarea-router LSAs for ASBRs (Type 4).
• C. router LSA (Type 1).
• D. autonomous system external LSA (Type 5)