To ensure security, authentication can be configured in the OSPFv3 process area view.

• A.True
• B.False

Comment: *

Name: *

Email: *

Verification: *

In the intra-domain MPLS VPN network, when the data packet enters the public network and is forwarded, it will be encapsulated with two layers of MPLS labels. Which of the following description about the two layers of labels is wrong? (Multiple choice)

• A.The outer label of MPLS VPNE is assigned by the LDP protocol or statically, and the inner label is assigned by the MP-BGP neighbor of the correct end
• B.The outer label of MPLS VPN is called the private network label and the inner label is called the public network label
• C.By default the outer label is popped before the packet is forwarded to the last hop device
• D.The outer label is used to correctly send the data packet to the corresponding VPN on the PE device

Comment: *

Name: *

Email: *

Verification: *

According to this picture, we can judge:

• A.The device type of R3 must be Level-2
• B.Unable to determine the device type of R3
• C.The device type of R3 must be Level-1
• D.The device type of R3 must be Level-1-2

Comment: *

Name: *

Email: *

Verification: *

The Tos field is used to mark the QOS in the IP packet, and the first 6 bits of the Tos field are used to mark the DSCP.

• A.True
• B.False

Comment: *

Name: *

Email: *

Verification: *

What is the meaning of ipv6 enable topology ipv6 in IS-IS protocol view?

• A.SPF calculation that does not support IPv6
• B.SPF calculation is performed separately in the topology of IPv4 and IPv6
• C.IPv4 and IPv6 use the same topology to perform SPF calculation
• D.has no meaning

Comment: *

Name: *

Email: *

Verification: *