What are the roles of OSPF protocol DR and BDR? (Multiple choice)

• A.Reduce the time to establish adjacency
• B.Reduce the types of OSPF protocol packets
• C.Reduce the number of exchanges of link state information.
• D.Reduce the number of adjacencies

Comment: *

Name: *

Email: *

Verification: *

Virtualization is the basis for the realization of NEV. Which of the following statements about the characteristics of virtualization is correct? (Multiple choice)

• A.Encapsulation: All virtual machines share the operating system, and encapsulation is achieved through name spaces.
• B.Isolation: The virtual machines on the same physical server are isolated from each other.
• C.Partition: You can run multiple virtual machines on a single physical server at the same time.
• D.Hardware independence: virtual machine and hardware decoupling, support virtual machine migration between servers.

Comment: *

Name: *

Email: *

Verification: *

Which of the following fields is not included in the HELLO packet of the OSPF protocol?

• A.Hellointerval
• B.Network mask
• C.Neighbor
• D.Sysname

Comment: *

Name: *

Email: *

Verification: *

vty configuration as shown in the figure, the user authority level is set to level 3.
[Huawei]user-interface vty o 14
[Huawei-ul-vtyo-14]acl 200o inbound
[Huavei-ui-vtyo-14]user privilege level 3
[Huavei-ui-vtyo-14]authentication-node password Please configure the login password (maxim length 16):huawei

• A.True
• B.False

Comment: *

Name: *

Email: *

Verification: *

How many more bytes are the packets using MPLS label double-layer nesting technology than the original IP packets?

• A.32
• B.16
• C.4
• D.8

Comment: *

Name: *

Email: *

Verification: *