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2021 Mar 400-101 actual exam

Q431. DRAG DROP 

Drag and drop the EIGRP term on the left to the corresponding definition on the right. 

Answer: 


Q432. An NSSA area has two ABRs connected to Area 0. Which statement is true? 

A. Both ABRs translate Type-7 LSAs to Type-5 LSAs. 

B. The ABR with the highest router ID translates Type-7 LSAs to Type-5 LSAs. 

C. Both ABRs forward Type-5 LSAs from the NSSA area to backbone area. 

D. No LSA translation is needed. 

Answer:


Q433. Which statement about the bgp soft-reconfig-backup command is true? 

A. It requires BGP to store all inbound and outbound updates. 

B. It overrides soft reconfiguration for devices that support inbound soft reconfiguration. 

C. When the peer is unable to store updates, the updates are implemented immediately. 

D. It provides soft reconfiguration capabilities for peers that are unable to support route refresh. 

E. It provides outbound soft reconfiguration for peers. 

Answer:


Q434. Refer to the exhibit. 

When the link between RtrB and RtrC goes down, multicast receivers stop receiving traffic from the source for multicast group 229.1.1.1.Which solution will resolve this? 

A. adding a static mroute on RtrB and RtrF 

B. adding a static unicast route on RtrB and RtrF 

C. creating a GRE tunnel between RtrB and RtrD 

D. enabling PIM sparse mode on both ends of the link between RtrB and RtrF 

Answer:

Explanation: 

For multicast traffic to flow, PIM must be enabled on all routers in the path of the multicast stream. 


Q435. Refer to the exhibit. 

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

A. It sets the data export destination to 209.165.200.227 on UDP port 49152. 

B. It enables Cisco Express Forwarding on interface FastEthernet0/0. 

C. It configures the export process to include the BGP peer AS of the router gathering the data. 

D. It enables NetFlow switching on interface FastEthernet0/0. 

E. It sets the data export destination to 209.165.200.227 on TCP port 49152. 

Answer: A,D 

Explanation: 

The “ip flow-export destination 209.165.200.227 49152” command specifies that the data export destination server is 209.165.200.227 using UDP port 49152. 

The “ip route-cache flow” command under the fastethernet 0/0 interface enable netflow switching on that interface. 


Abreast of the times 400-101 practice question:

Q436. Refer to the exhibit. 

Assume that Cisco Discovery Protocol is supported and enabled only on switches A and C. 

Which information is returned when you issue the command show cdp neighbors on switch C? 

A. a limited amount of information about switch B 

B. neighbor details for switch A 

C. neighbor details for switch B 

D. neighbor details for switch C 

Answer:


Q437. DRAG DROP 

Drag each show command on the left to the description of its output on a PE router on the right. 

Answer: 


Q438. Refer to the exhibit. 

How can Router X in AS70000 peer with Router Y in AS65000, in case Router Y supports only 2-byte ASNs? 

A. Router X should be configured with a remove-private-as command, because this will establish the peering session with a random private 2-byte ASN. 

B. It is not possible. Router Y must be upgraded to an image that supports 4-byte ASN. 

C. Router Y should be configured with a 4-byte AS using the local-as command. 

D. Router X should be configured with a 2-byte AS using the local-as command. 

Answer:

Explanation: 

Since router Y does not support 4-byte ASN,s it will not understand any AS numbers larger than 65535, so router X should use the local-as command on the peering statement to router Y to so that it sends in a 2-byte ASN to router Y. 


Q439. Now that we’ve generated the key, our next step would be to configure our vty lines for SSH access and specify which database we are going to use to provide authentication to the device. The local database on the router will do just fine for this example. 

LabRouter(config)#line vty 0 4 

LabRouter(config-line)#login local 

LabRouter(config-line)#transport input ssh 

5. You will need to create an account on the local router’s database to be used for authenticating to the device. This can be accomplished with these commands. LabRouter(config)#username XXXX privilege 15 secret XXXX 

Reference: http://blog.pluralsight.com/configure-secure-shell-ssh-on-cisco-router 


Q440. Refer to the exhibit. 

What is the role of this multicast router? 

A. a first-hop PIM router 

B. a last-hop PIM router 

C. a PIM rendezvous point 

D. a PIM inter-AS router 

Answer:

Explanation: 

The following is sample output from the show ip pim tunnel taken from an RP. The output is used to verify the PIM Encap and Decap Tunnel on the RP: 

Switch# show ip pim tunnel 

Tunnel0 

Type : PIM Encap 

RP : 70.70.70.1* 

SourcE. 70.70.70.1 

Tunnel1* 

Type : PIM Decap 

RP : 70.70.70.1* 

SourcE. -R2# 

The asterisk (*) indicates that the router is the RP. The RP will always have a PIM Encap and Decap Tunnel interface. 

Reference: 

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3650/software/release/3se/multic ast/command_reference/b_mc_3se_3650_cr/b_mc_3se_3650_cr_chapter_010.html#wp12 86920037