[Free] 2019(Nov) EnsurePass Cisco 642-883 Dumps with VCE and PDF 51-60

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Question No.51

Refer to the Cisco IOS XR route policy exhibit. Which two statements are correct? (Choose two.)

image

  1. quot;testquot; and quot;fooquot; are references to the community sets.

  2. The quot;match-anyquot; option indicates matching either the standard community or extended community.

  3. Routes that match both the quot;testquot; and quot;fooquot; conditions will have their local preference set to 20.

  4. All non-matching routes will be permitted.

Answer: AD

Question No.52

Which option is a mechanism that can be implemented between two eBGP peers to communicate updates that each peer needs from the other?

  1. ORF

  2. route map

  3. ACL

  4. prefix list

Answer: A

Question No.53

Which option is the minimum required configuration to enable PIM on a Cisco IOS XR router interface?

  1. router pim

    address-family ipv4

    interface GigabitEthernet0/0/0/0

  2. router pim

    interface GigabitEthernet0/0/0/0 address-family ipv4

    enable

  3. router pim

    address-family ipv4

    interface GigabitEthernet0/0/0/0 enable

  4. router pim

    interface GigabitEthernet0/0/0/0 enable

  5. router pim

address-family ipv4

interface GigabitEthernet0/0/0/0 address-family ipv4

enable

Answer: D

Question No.54

Refer to the OSPF command exhibit. Which effect does the no-summary command option have?

image

  1. It will cause area 1 to be able to receive non-summarized inter-area routes.

  2. It will cause area 1 to not receive any inter-area routes and will use a default route to reach networks in other areas.

  3. It will cause area 1 to not receive any external routes and will use a default route to reach the external networks.

  4. It will convert the NSSA area into a NSSA totally stubby area.

  5. It will convert the stubby area into a NSSA.

  6. It will disable OSPF auto-summary.

Answer: B

Explanation:

image

Question No.55

Which BGP attribute is a set of generic tags that can be used to signal various routing policies between BGP routers?

  1. AS path

  2. MED

  3. weight

  4. communities

  5. route tags

Answer: D

Explanation: http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a00801475b2. shtml

Question No.56

A network engineer wants to test a path between any two points in the network for multicast traffic to identify congestion points in the network. Which command in a Cisco IOS XE router shows multicast traffic drops?

  1. mstat

  2. mtrace

  3. mrinfo

  4. ping

Answer: A

Question No.57

Refer to the exhibit. Area 1 routers must have only a default route in their OSPF routing tables. Which configuration must be completed on XR2 to meet this requirement?

image

  1. router ospf 1 address-family ipv4

    interface GigabitEthernet0/0/0/1 area 1 stub no-summary

  2. router ospf 1

    area 1 stub no-summary

  3. router ospf 1 area 1 stub

    interface GigabitEthernet0/0/0/1

  4. router ospf 1

area 1 stub no-summary interface GigabitEthernet0/0/0/1

Answer: D

Question No.58

Routes that are received from an IBGP peer will be propagated to which other routers by default?

  1. to the EBGP peers only

  2. to the IBGP peers only

  3. to both EBGP and IBGP peers

  4. to no other peers

Answer: A

Question No.59

Which option is used by BGP for basic authentication between neighbors?

  1. TCP option 19 and MD5 hash

  2. TCP option 19 and SHA hash

  3. UDP option 19 and MD5 hash

  4. UDP option 19 and SHA hash

Answer: A

Question No.60

Which three statements are true regarding the OSPF router ID? (Choose three.)

  1. The OSPF routing process chooses a router ID for itself when it starts up.

  2. The router-id command is the preferred procedure to set the router ID.

  3. If a loopback interface is configured, its address will always be preferred as the router ID over any other methods.

  4. After the router ID is set, it does not change, even if the interface that the router is using for the router ID goes down. The router ID changes only if the router reloads or if the OSPF routing process restarts.

  5. In OSPF version 3, the OSPF router ID uses a 128-bit number.

Answer: ABD

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