QUESTION: 13

On the OSPF network, which of the following statements about the authentication function of the OSPF protocol are true?

The OSPF protocol supports area authentication and interface authentication.
The interface authentication mode must be consistent with the area authentication mode . For Example, interface and area are authentication in simple or MDS mode or are not authenticated.
The interface authentication mode can be different from the area authentication mode.
The authentication function of the OSPF is implemented by parameter settings in hello packets.

Answer(s): D

Exhibit.

The preceding information shows the configurations of Ethernet 6/1/1 and ensure created based on received IGMPv2 Report messages. Which action does Ethernet 6/1/1 after receiving Leave messages for group 224.1.2.3?

Deletes the record of group 224.1.2.3
Sends group-specific query messages for group 224.1.2.4

Answer(s): A

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QUESTION: 15

With the NAT technology, which of the followingelements can be translated?

Destination port number
Source port number
Source IP
Session table
Destination IP

Answer(s): A

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QUESTION: 16

Which of the followingstatementsabout the merits of the HoVPN networking are true?

If the UPE are SPE are separated by an IP/IPMLS network, they can be connected through a generic routing encapsulation (GRE) or LSP runnel . A hierarchical MPLS VPN provides good scalability.
The SPE and UP exchange routes and advertise labels through MP-BGP. Each UPE runs only one BGP peer, reducing system overheads and simplifying configuration.
The BGP/MPLS VPN can be deployed layers by layer. When the performance of a super strum provider edge (SPE) is insufficient, a user-end provider edge (UPE) can be added and the SPE moved to a lower layer. When the access capability of a UPE is insufficient, and SPE can be added.
Packets are forwarded between a UPE and an SPE after being label. The UPE and SPE are connected through an interface (or a subinterface), helping reduce the usage of limited interface resources.
Only local VPN routes need to be maintained on an SPE and remote routes on the SPE are represented by a default route or an aggregate route, reducing the load of the SP

Answer(s): E

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