It is impossible to pass Cisco 642-883 exam without any help in the short term. Come to Actualtests soon and find the most advanced, correct and guaranteed Cisco 642-883 practice questions. You will get a surprising result by our Renew Deploying Cisco Service Provider Network Routing (SPROUTE) practice guides.
2021 Dec 642-883 actual exam
Q61. What is defined by using the Cisco IOS XR policy-global configuration command?
A. the default BGP route policy
B. global variables that can be referenced by any route policy
C. the global default route policy
D. hierarchical route policy
E. nested route policy
Answer: B
Explanation:
Global Configuration Mode Prompt: (config) Enter global configuration mode from executive (EXEC) mode by using the configure command. Global configuration commands generally apply to the whole system rather than just one protocol or interface. You can enter all other configuration submodes listed in this section from global configuration mode. RP/0/RP0/CPU0:router# configure RP/0/RP0/CPU0:router(config)# Global Parameter Configuration Mode Prompt: (config-rpl-gl)
Enter global parameter configuration mode by using the policy-global command in global configuration mode.
In global parameter configuration mode, you can create or modify a global policy by entering successive commands and then terminating the configuration by entering the end-global command.
For example, to configure global parameters: RP/0/RP0/CPU0:router(config)# policy-global RP/0/RP0/CPU0:router(config-rp-gl)# glbpathtype ebgp RP/0/RP0/CPU0:router(config-rp-gl)# glbtag 100 RP/0/RP0/CPU0:router(config-rp-gl)# end-global
Q62. Refer to the exhibit.
R1 is advertising subnets 1.1.1.X/32 via eBGP. XR4.must accept only the first seven subnets in its BGP table. Which configuration must occur on XR2 to meet these parameters?
A. route-policy INBOUND if destination in SUBNETS then pass endif router bgp 100 neighbor 10.10.14.1 address-family ipv4 unicast route-policy INBOUND in
B. route-policy INBOUND.if destination in FILTER then pass endif router bgp 100 neighbor 10.10.14.1 address-family ipv4 unicast route-policy INBOUND in
C. router bgp 100 neighbor 10.10.14.1 address-family ipv4 unicast route-policy FILTER in
D. router bgp 100 neighbor 10.10.14.1 address-family ipv4 unicast route-policy SUBNETS in
Answer: B
Q63. Which statement is correct regarding the DR election process In this OSPF implementation?
A. Both the CE5 and PE6 routers are DROTHERs
B. PE5 is the OSPFv2 DR for the GigabitEthernet link between PE5 and PE6
C. PE6 is the OSPFv2 and OSPFv3 DR for the GigabitEthernet link between PE5 and PE6
D. PE6 is the DR for the GigabitEthernet link between PE5 and PE6 because it has a higher OSPF priority
Answer: A
Explanation: # show ip ospf neighbor # show ipv6 ospf neighbor
Q64. Refer to the BGP and route map configurations exhibit.
When the "setas" route map is applied to the 10.1.1.2 neighbor, the 10.1.1.2 neighbor is not able to receive all the required BGP routes from this router. What could be the problem?
A. The BGP session was cleared using the clear ip bgp command after the route map was applied.
B. The test1 or test2 prefix-list is misconfigured.
C. There is no pass action configured within the route map.
D. The route map is missing the route-map setas permit 30 statement.
Answer: D
Q65. Under which two conditions does an enterprise require BGP peering with its upstream Internet provider? (Choose two.)
A. The enterprise has two exit points that are geographically separated and routing must be controlled so that delay variations are reduced.
B. The enterprise has one exit point and must announce the IP class it has been assigned from its ISP.
C. The enterprise has two Layer 2 links to the upstream ISP in the same location and wants to achieve redundancy.
D. The enterprise needs a simple and efficient way to ensure proper routing for its AP subnets on its single ISP link.
E. The enterprise is multihomed to two ISPs and has its own IP space AS number.
Answer: A,E
Renew 642-883 exam cram:
Q66. Refer to the Cisco IOS route map configuration exhibit.
Which two statements are correct? (Choose two.)
A. The match prefix-list condition is a logical OR: match prefix list PL1 OR PL2.
B. All match conditions are logical OR: match prefix list PL1 OR PL2 OR match the APACL1 AS path access list.
C. The three match conditions are logical AND. match prefix list PL1 AND PL2 AND match the APACL1 AS path access list.
D. The local preference AND the metric will be set to 100 IF the route matches the PL1 OR PL2 prefix list AND the route must also match the APACL1 AS path access list.
E. All routes that are not matched by the sequence 10 route map statement will be dropped.
Answer: A,D
Explanation:
http://www.routeralley.com/ra/docs/route_maps.pdf
When match criteria is contained within a single line, a logical OR is applied.
Q67. When configuring Cisco IOS XR route policy nesting, which command is used within a route policy to call another route policy?
A. Apply
B. Continue
C. Jump
D. Go to
E. Call
Answer: A
Explanation:
http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.7/routing/command/reference/rr37plc y.html
Examples In the following example, the policy CustomerIn applies the route-policy SetLocalPref to conditionally set the local preference on a route. The parameters 20, 30, 40, and 50 are passed to the parameterized policy SetLocalPref, where the local preference is set to:
.20, if the community 217:20 is present in the route
.30, if the community 217:30 is present in the route
.40, if the community 217:40 is present in the route
.50, if the community 217:50 is present in the route
RP/0/RP0/CPU0:router(config)# route-policy SetLocalPref ($lp0, $lp1, $lp2, $lp3, $lp4) RP/0/RP0/CPU0:router(config-rpl)# if community matches-any ($lp0:$lp1)then RP/0/RP0/CPU0:router(config-rpl-elseif)# set local-preference $lp1 RP/0/RP0/CPU0:router(config-rpl-elseif)# elseif community matches-any ($lp0:$lp2) then RP/0/RP0/CPU0:router(config-rpl-elseif)# set local-preference $lp2 RP/0/RP0/CPU0:router(config-rpl-elseif)# elseif community matches-any ($lp0:$lp3) then RP/0/RP0/CPU0:router(config-rpl-elseif)# set local-preference $lp3 RP/0/RP0/CPU0:router(config-rpl-elseif)# elseif community matches-any ($lp0:$lp4) then RP/0/RP0/CPU0:router(config-rpl-elseif)# set local-preference $lp4 RP/0/RP0/CPU0:router(config-rpl-elseif)# endif RP/0/RP0/CPU0:router(config-rpl)# end-policy RP/0/RP0/CPU0:router(config)# route-policy CustomerIn($cust) RP/0/RP0/CPU0:router(config-rpl)# apply SetLocalPref ($cust, 20, 30, 40, 50) RP/0/RP0/CPU0:router(config-rpl)# end-policy RP/0/RP0/CPU0:router(config)# route-policy Cust_217 RP/0/RP0/CPU0:router(config-rpl)# apply CustomerIn(217) RP/0/RP0/CPU0:router(config-rpl)# end-policy
Q68. How many total OSPF virtual links are configured in this multiarea OSPF network which supports both OSPFv2 and OSPFv3 for IPv4 and IPv6 routing?
A. 1
B. 2
C. 3
D. 4
Answer: B
Explanation:
#Show running-config | include virtual – check how many router having “virtual “ entry
Q69. What are three common problems that can cause a BGP neighbor state to toggle between the idle state and the active state? (Choose three.)
A. BGP network command misconfiguration
B. route policy misconfiguration
C. AS number misconfiguration
D. route map misconfiguration
E. BGP neighbor peering to wrong IP address
F. IGP routing problem: not able to reach the source IP address of the BGP open packet
Answer: C,E,F
Q70. Which two statements are true about an EBGP session or an IBGP session? (Choose two.)
A. IBGP uses AS-Path to detect routing information loops within the AS.
B. EBGP routes have a default Admin Distance of 20 and IBGP routes have a default Admin Distance of 200.
C. No BGP attributes are changed in EBGP updates except for the next-hop attribute if next-hop-self is configured.
D. Routes learned from an EBGP peer not advertised to another EBGP peer to prevent routing information loops.
E. IBGP uses split horizon to prevent routing information loops; routes learned from an IBGP peer are not advertised to another IBGP peer.
Answer: B,E