[Free] 2019(Nov) EnsurePass Cisco 642-883 Dumps with VCE and PDF 71-80

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Question No.71

Which high-availability mechanism is a detection protocol that is enabled at the interface and at

the routing protocol levels?

  1. NSF

  2. SSO

  3. NSR

  4. BFD

  5. SDR

Answer: D

Explanation:

http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fs_bfd.html

Question No.72

A network engineer is configuring IS-IS in Cisco IOS XR. Where is BFD configured?

  1. RP/0/RSP0/CPU0:router(config-isis-if)#

  2. RP/0/RSP0/CPU0:router(config)#

  3. RP/0/RSP0/CPU0:router(config-bfd)#

  4. RP/0/RSP0/CPU0:router(config-isis-if-af)#

Answer: A

Question No.73

A network has four routers running IS-IS with the NET addresses below: R1 – 49.1234.1111.1111.1111.00

R2 – 49.1234.2222.2222.2222.00

R3 – 49.4321.1111.1111.1111.00

R4 – 49.4321.2222.2222.2222.00

How can IS-IS authentication be enabled between all routers?

  1. domain authentication with the command (config-rtr)#domain-passwordword

  2. domain authentication with the command (config-if)#isis domain-passwordword

  3. interface authentication with the command (config-if)#isis passwordword

  4. area authentication with the command (config-if)#isisarea-passwordword

Answer: A

Question No.74

An engineer is configuring an eBGP peering session. What is the default TTL value?

A.

1

B.

64

C.

127

D.

255

Answer: A

Question No.75

What is defined by using the Cisco IOS XR policy-global configuration command?

  1. the default BGP route policy

  2. global variables that can be referenced by any route policy

  3. the global default route policy

  4. hierarchical route policy

  5. 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

Question No.76

A network engineer must secure every BGP session within the autonomous system by enabling MD5 authentication. Which command implements authentication on network devices that run regular Cisco IOS?

  1. password encryptedpassword

  2. neighboripv4_addresspasswordpassword

  3. service password-encryption

  4. key chain md5

Answer: B

Question No.77

Refer to the exhibit. R2 does not have R1 1.1.1.1/32 subnet in its BGP table. Which issue can be causing this problem?

image

  1. XR4 does not have next-hop-self for a R2 iBGP session.

  2. R2 does not have no auto-summary configured.

  3. XR4 drops any update coming from R1.

  4. IPv4 address-family is not enabled on R1.

Answer: C

Question No.78

Refer to the exhibit. A service provider (AS65000) is interconnected to two upstream providers (ISP 1 neighbor IP 192.168.1.1 and ISP 2 neighbor IP 192.168.1.2) via a single link in a peering exchange. Which option can an engineer use to implement nonproprietary policies to make ISP 1 the preferred link for incoming and outgoing traffic from the local SP?

image

  1. route-map outgoing permit 10

    set as-path prepend 65000 65000 65000 route-map incoming permit 10

    set local-preference 1000

    router bgp 65000

    neighbor 192.168.1.1

    route-map incoming outneighbor 192.168.1.1 route-map outgoing in

  2. route-map outgoing permit 10 set metric 100

    route-map incoming permit 10 set weight 100

    router bgp 65000

    neighbor 192.168.1.1

    route-map incoming inneighbor 192.168.1.1 route-map outgoing out

  3. route-map outgoing permit 10

    set as-path prepend 65000 65000 65000 route-map incoming permit 10

    set local-preference 1000router bgp 65000 neighbor 192.168.1.1

    route-map incoming inneighbor 192.168.1.2 route-map outgoing out

  4. set as-path prepend 65000 65000 65000 route-map incoming permit 10

set weight 100router bgp 65000 neighbor 192.168.1.1

route-map incoming inneighbor 192.168.1.1 route-map outgoing out

Answer: A

Question No.79

Which value must be configured when redistributing OSPFv2 into RIP?

  1. metric

  2. bandwidth

  3. delay

  4. MTU

  5. reliability

Answer: A

Question No.80

A service provider is about to purchase more IPv4 address space. Which organization can facilitate this purchase?

  1. APNIC

  2. IETF

  3. USANOG

  4. IEEE

  5. NANOG

Answer: A

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