642-883 무료 덤프문제 온라인 액세스

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.2
• B.3
• C.4
• D.1

A network engineer implements IS-IS authentication in a router. When the engineer implements the same password on the router's peer, the output below is displayed with the debug IS-IS authentication information:
* Nov 6 13:23:46:967: ISIS-Authinfo: No auth TLV found in received packet
Which option is one reason for this output?

• A.The authentication is set the same way, but the password does not match.
• B.There is an error with the NET address in one of the routers.
• C.The length of the password is not the same.
• D.Authentication was not configured on the router that sent the update.

DRAG DROP
Drag and drop the terms on the left onto the appropriate definition on the right.

정답:

Explanation:
Is a network that solely purchases transit from other networks to reach the Internet - Tier 3
ISP
Peers with some networks, but purchases IP transit or pays settlements to reach some portion of the Internet- Tier 2 ISP
Peers with other ISPs of the same Tier level to form the backbone of the Internet - Tier 1
ISP
Provides or sells access and bandwidth into its backbone infrastructure and network access points - NSP
Interconnects network service providers - NAP

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

• A.purchases transit and pays settlements to other service providers
• B.interconnects with Tier Level 1 and Tier Level 2 ISPs in public peering points
• C.receives a full Internet routing table via BGP from its upstream provider, which it can use for load-balancing traffic
• 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

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

• A.RP/0/RSP0/CPU0:router(config-isis-if)#
• B.RP/0/RSP0/CPU0:router(config-isis-if-af)#
• C.RP/0/RSP0/CPU0:router(config-bfd)#
• D.RP/0/RSP0/CPU0:router(config)#