Free HCIE-Datacom V1.0 Exam H12-891_V1.0 Exam Practice Test

0SPFV2 is running on the IPV4 network IGP: OSPF3 is running in the IPV6 network, OSPF35 OSPFV2 has the same message type. Includes hello messages, DOD messages, LSR messages, LAU messages, and SAX messages about OSPP The following statement is correct?

• The hello packet of OSPFv3 carries the IPV6 address prefix of the router interface
• OSPFv3 uses the authentication field of the packet header to complete the packet authentication
• OSPFv3 uses the link-local address as the source address for sending packets, which can be forwarded outside the range of the originating link
• OSPFv3 sends OSPFv3 packet using the IPV6 multicast addresses FF02::5 and FF02

Communityflter has two types of basic group nature filters and advanced group property filters. Which of the following filters makes the Advanced Group Genus Filter more flexible than the Basic Group Attribute Filter to match group attributes?

• IP-prefix
• AS-path-filter
• Regular-expression
• ACL

A campus deployed both IPv4 and IPv6 networks for service testing, and ran IS-S to interconnect the networks. (The S-S routing protocol has good scalability and is widely used in the live network.) Regarding IS-IS extensibility, which of the following statements is true?

• In order to support IPv6, IS-IS needs to add TLV to carry IPv6 address information
• IS-IS uses the TLV structure to build messages, making lS-IS more flexible and extensible
• NLPID is a new type of TLV added by IS-IS to support IPv6
• For IS-IS, adding new features simply adds a new TLV to

What is the following description of MPLS incorrect?

• The length of the MPLS tag is 20 to 20 for packet forwarding.
• The tag space range of dynamic signaling protocols such as LDP, M P-BGP is 16 to 1023
• When using the TTL processing method of Pipe mode, the IP packet transmits the TTL of the IP packet over the IPLS network. The value is only minus 1 for the MPLS in and out nodes.
• MPLS supports multi-layer label nesting, and the S bit value of the innermost label is 1.

In VXLAN scenarios, what features can be turned on to reduce flooding of ARP messages between VTEPs?( Multiple select).

• Host Information Collection
• Local ARP agent
• port isolation
• ARP broadcast suppression

The following description of the link state protocol is plausible?

• CPU utilization is high and loops are easy to generate
• Slow convergence and low CPU utilization
• Fast convergence and low CPU utilization
• Fast convergence and high CPU utilization

Which of the following LSAs propagate in a single region only?

• Router LSA
• Summary LSA
• Network LSA
• AS External LSA

Off-stem cross-domain VPN-Option B scenario, the following description is incorrect?

• During the packet forwarding process, it is necessary to exchange the VPN's private network LSP on the
• two ASBRs IP-EBGP neighbor relationships.
• The cross-domain VPN-Option B scheme is not limited by the number of interconnection links between ASBRs
• The outer layer tag is exchanged between two ASBRs to vpnV4 routes.

The command to adjust the LINK cost value for the IS-IS interface is ?( Radio)

• ISIS cost
• ISIS timer hello
• lSIS circuit type
• ISIS circuit level

In the evolution from IPv4 networks to IPv6, some transition technologies have emerged, which of the following are common types of transition technologies?

• Dual-stack technology
• Tunneling Technology
• Compatible with Technology
• Conversion Technology