Free Cisco 642-883 Exam Dumps Questions & Answers

Refer to the OSPF command exhibit.

Which effect does the no-summary command option have?

• A.  It will convert the stubby area into a NSSA.
• B.  It will convert the NSSA area into a NSSA totally stubby area.
• C.  It will cause area 1 to be able to receive non-summarized inter-area routes.
• D.  It will cause area 1 to not receive any external routes and will use a default route to reach the external networks.
• E.  It will disable OSPF auto-summary.
• F.  It will cause area 1 to not receive any inter-area routes and will use a default route to reach networks in other areas.

Refer to the exhibit.

Which Cisco IOS XE command should be added to this configuration for the BFD protocol to operate successfully?

• A.  Router1(config-if)#bfd echoRouter2(config-if)#bfd echo
• B.  Router1(config- bfd)#echo-enableRouter2(config- bfd)#echo-enable
• C.  Router1(config-ospf-ar-if)#bfd fast-detectRouter2(config-ospf-ar-if)#bfd fast-detect
• D.  Router1(config-router)#bfd all-interfacesRouter2(config-router)#bfd all-interfaces

Which two features are specific only to Tier 3 providers? (Choose two.)

• A.  interconnects with Tier Level 1 and Tier Level 2 ISPs in public peering points
• B.  receives a full Internet routing table via BGP from its upstream provider, which it can use for load-balancing traffic
• C.  purchases transit and pays settlements to other service providers
• D.  uses strict route filtering to allow only customer and local routes to be sent to upstream providers
• E.  only purchases transit from other networks to reach the Internet

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

• A.  ORF
• B.  prefix list
• C.  ACL
• D.  route map

Which two statements regarding OSPFv2 or OSPFv3 authentication are correct? (Choose two.)

• A.  OSPFv2 supports MD5 authentication.
• B.  OSPFv2 relies on the native security stack that uses IPsec.
• C.  OSPFv3 relies on the native security stack that uses IPsec.
• D.  OSPFv3 supports MD5 authentication.
• E.  OSPFv3 supports MD5 or SHA authentication.
• F.  OSPFv2 supports MD5 or SHA authentication.