QUESTION 81
DRAG DROP
Correct Answer:
QUESTION 82
Which Cisco IOS XR command setssuccessfully configure a value of 20 for the advertisement-interval?
|
A. |
RP/0/RSP0/CPU0:routerconfig)# router bgp 65512 RP/0/RSP0/CPU0:router(config-bgp)# session-group test RP/0/RSP0/CPU0:router(config-bgp-sngrp)# advertisement-interval 20 RP/0/RSP0/CPU0:router(config-bgp-sngrp)# exit RP/0/RSP0/CPU0:router(config-bgp)# neighbor-group test RP/0/RSP0/CPU0:router(config-bgp-nbrgrp)# advertisement-interval 25 RP/0/RSP0/CPU0:router(config-bgp-nbrgrp)# exit RP/0/RSP0/CPU0:router(config-bgp)# exit RP/0/RSP0/CPU0:router(config-bgp)# neighbor 192.168.1.1 RP/0/RSP0/CPU0:router(config-bgp-nbr)# remote-as 65513 RP/0/RSP0/CPU0:router(config-bgp-nbr)# use session-group test RP/0/RSP0/CPU0:router(config-bgp-nbr)# use neighbor-group test |
|
B. |
RP/0/RSP0/CPU0:routerconfig)# router bgp 65512 RP/0/RSP0/CPU0:router(config-bgp)# session-group test RP/0/RSP0/CPU0:router(config-bgp-sngrp)# ebgp-multihop 2 RP/0/RSP0/CPU0:router(config-bgp-sngrp)# exit RP/0/RSP0/CPU0:router(config-bgp)# neighbor-group test RP/0/RSP0/CPU0:router(config-bgp-nbrgrp)# advertisement-interval 20 RP/0/RSP0/CPU0:router(config-bgp-nbrgrp)# exit RP/0/RSP0/CPU0:router(config-bgp)# exit RP/0/RSP0/CPU0:router(config-bgp)# neighbor 192.168.1.1 RP/0/RSP0/CPU0:router(config-bgp-nbr)# remote-as 65513 RP/0/RSP0/CPU0:router(config-bgp-nbr)# use session-group test RP/0/RSP0/CPU0:router(config-bgp-nbr)# use neighbor-group test |
|
C. |
RP/0/RSP0/CPU0:routerconfig)# router bgp 65512 RP/0/RSP0/CPU0:router(config-bgp)# session-group test RP/0/RSP0/CPU0:router(config-bgp-sngrp)# exit RP/0/RSP0/CPU0:router(config-bgp)# neighbor-group test RP/0/RSP0/CPU0:router(config-bgp-nbrgrp)# exit RP/0/RSP0/CPU0:router(config-bgp)# exit RP/0/RSP0/CPU0:router(config-bgp)# neighbor 192.168.1.1 RP/0/RSP0/CPU0:router(config-bgp-nbr)# remote-as 65513 RP/0/RSP0/CPU0:router(config-bgp-nbr)# use session-group test RP/0/RSP0/CPU0:router(config-bgp-nbr)# use neighbor-group test |
|
D. |
RP/0/RSP0/CPU0:routerconfig)# router bgp 65512 RP/0/RSP0/CPU0:router(config-bgp)# session-group test RP/0/RSP0/CPU0:router(config-bgp-sngrp)# advertisement-interval 25 RP/0/RSP0/CPU0:router(config-bgp-sngrp)# exit RP/0/RSP0/CPU0:router(config-bgp)# neighbor-group test RP/0/RSP0/CPU0:router(config-bgp-nbrgrp)# advertisement-interval 20 RP/0/RSP0/CPU0:router(config-bgp-nbrgrp)# exit RP/0/RSP0/CPU0:router(config-bgp)# exit RP/0/RSP0/CPU0:router(config-bgp)# neighbor 192.168.1.1 RP/0/RSP0/CPU0:router(config-bgp-nbr)# remote-as 65513 RP/0/RSP0/CPU0:router(config-bgp-nbr)# use session-group test RP/0/RSP0/CPU0:router(config-bgp-nbr)# use neighbor-group test |
Correct Answer: A
QUESTION 83
The bsr-border router PIM interface configuration command is used for what purpose?
|
A. |
To enable the router as the candidate RP |
|
B. |
To enable the router as the candidate BSR |
|
C. |
To enable the router as the BSR mapping agent |
|
D. |
To set up an administrative boundary to prevent BSR messages from being sent out through an interface |
|
E. |
To define a boundary to restrict the RP discovery and announcement messages from being sent outside the PIM-SM domain |
Correct Answer: D
QUESTION 84
A network engineer is working for an ISP and a current eBGP customer requests to enable the BGP TTL security feature. The engineer sees from the current established BGP session that the eBGP peer is directly connected and the ebgp-multihop feature is already in use with a value of one. Which two actions are needed on the Cisco IOS XR router to accomplish the task? (Choose two.)
|
A. |
Configure the neighbor with the command ttl-security. |
|
B. |
Disable the eBGP-multihop feature. |
|
C. |
Clear the BGP session for the configuration change to take effect. |
|
D. |
< span lang="EN-US" style="font-family: ; mso-font-kerning: 0pt; mso-no-proof: yes">Enable the BGP TTL security and the BGP peer resets automatically for the change to take effect. |
|
E. |
Configure the neighbor with the command ttl-security 254. |
Correct Answer: AC
QUESTION 85
With PIM-SM operations, which four pieces of information are maintained in the multicast routing table for each (*,G) or (S,G) entry? (Choose four.)
|
A. |
RPF Neighbor |
|
B. |
RP Set |
|
C. |
Incoming Interface |
|
D. |
OIL |
|
E. |
DF priority |
|
F. |
PIM SM state flags |
Correct Answer: ACDF
Explanation:
The following is sample output from the show ip mroute command for a router operating in sparse mode:
show ip mroute
IP Multicast Routing Table
Flags: D – Dense, S – Sparse, C – Connected, L – Local, P – Pruned
R – RP-bit set, F – Register flag, T – SPT-bit set Timers: Uptime/Expires
Interface state: Interface, Next-Hop, State/Mode
(*, 224.0.255.3), uptime 5:29:15, RP is 198.92.37.2, flags: SC
Incoming interface: Tunnel0, RPF neighbor 10.3.35.1, Dvmrp
Outgoing interface list:
Ethernet0, Forward/Sparse, 5:29:15/0:02:57
(198.92.46.0/24, 224.0.255.3), uptime 5:29:15, expires 0:02:59, flags: C
Incoming interface: Tunnel0, RPF neighbor 10.3.35.1 Outgoing interface list:
Ethernet0, Forward/Sparse, 5:29:15/0:02:57
QUESTION 86
You noticed a recent change to the BGP configuration on a PE router, the bgp scan time has been changed from the default value to 30s. Which three effects will this change have? (Choose three.)
|
A. |
The BGP table will be examined and verified more frequently |
|
B. |
The BGP keepalive messages will be sent to the BGP peers at a faster rate |
|
C. |
The BGP table will be modified more quickly in the event that a next-hop address becomes unreachable |
|
D. |
The CPU load of the router will increase |
|
E. |
The minimum time interval between sending EBGP and IBGP routing updates will decrease |
|
F. |
The BGP convergence time will increase |
Correct Answer: ACD
QUESTION 87
Which command set should be used for a 6to4 tunnel in a Cisco IOS XE router, considering the border interface with IPv4 address of 209.165.201.2?
|
A. |
interface Tunnel2002 ipv6 enable ipv6 address 2002:D1A5:C902::1/128 tunnel source Ethernet0/0 tunnel mode ipv6ip 6to4 |
|
B. |
interface Tunnel2002 ipv6 enable ipv6 address 2002:D1A5:D902::1/128 tunnel source Ethernet0/0 tunnel mode ipv6ip 6to4 |
|
C. |
interface Tunnel2002 ipv6 enable ipv6 address 2002:D1A5:D902::1/128 tunnel source Ethernet0/0 tunnel mode ipv6ip |
|
D. |
interface Tunnel2002 ipv6 enable ipv6 address 2002:D1A5:C902::1/128 tunnel source Ethernet0/0 |
|
E. |
interface Tunnel2002 ipv6 enableipv6 address 2002:D1A5:D902::1/128 tunnel source Ethernet0/0 tunnel mode ipv6ip auto-tunnel |
Correct Answer: B
QUESTION 88
Which two options areadvantages of an IPv6 dual-stack implementation in an enterprise environment? (Choose two.)
|
A. |
simplifies the route redistribution policies complexity |
|
B. |
requires IPv6-to-IPv4 translation on the uplinks to the service providers |
|
C. |
provides built-in support for Kerberos authentication |
|
D. |
does not have to worry about NAT traversal |
|
E. |
supports multicast properly |
Correct Answer: DE
QUESTION 89
Which keyword is used in the syntax to refer to Cisco IOS XR address-family groups, session groups, or neighbor groups?
|
A. |
inherit |
|
B. |
apply |
|
C. |
use |
|
D. |
commit |
Correct Answer: C
QUESTION 90
Assume that the R1 router is enabled for PIM-SM and receives a multicast packet sourced from 172.16.1.100, and the R1 router has multicast receivers on the Gi0/1, Gi0/2, Gi0/3 and Gi0/4 interfaces. The multicast packet from the 172.16.1.100 source must arrive on which interface on the R1 router for it to be forwarded out the other interfaces?
|
A. |
Gi0/1 |
|
B. |
Gi0/2 |
|
C. |
Gi0/3 |
|
D. |
Gi0/4 |
|
E. |
Gi0/1 or Gi0/2 or Gi0/3 or Gi0/4 |
|
F. |
Gi0/2 or Gi0/3 |
|
G. |
Gi0/1 or Gi0/4 |
Correct Answer: A
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