What is the total length of the VLAN frame format defined by IEEE802.1Q? ()

• A.1
• B.3
• C.4
• D.2

Comment: *

Name: *

Email: *

Verification: *

As shown in the figure, the network administrator creates VLAN2 on the SWA and SWB, and configures the ports connecting the hosts on the two switches as Access ports and assigns them to VLAN2.
Configure G0/0/1 of SWA and G0/0/2 of SWB as trunk ports to allow all VLANs to pass. To achieve normal communication between the two hosts, you also need.

• A.Configure G0/0/1 on SWC as a trunk port and allow VLAN2 to pass through, set G0/0/2 as an access port, and set the PVID to 2.
• B.Create VLAN2 on SWC, configure G0/0/1 and G0/0/2 as trunk ports, and allow VLAN2 to pass
• C.Create VLAN2 on SWC
• D.Configure the G0/0/1 Trunk port on SWC and allow VLAN2 to pass through

Comment: *

Name: *

Email: *

Verification: *

Virtualization is the foundation of NFV. Which of the following statements about the characteristics of virtualization is correct?

• A.Encapsulation: All virtual machines share the operating system, and the encapsulation is realized through the namespace
• B.Isolation: Virtual machines on the same physical server are isolated from each other.
• C.Hardware independence: Virtual machines and hardware are decoupled, and virtual machines can be migrated between servers.
• D.Partition: Multiple virtual machines can be run on a single physical server at the same time.

Comment: *

Name: *

Email: *

Verification: *

Telnet.read in TelnetliB._The role of all() is to read all data until EOF. If the echo does not return EOF, it will always block ()

• A.True
• B.False

Comment: *

Name: *

Email: *

Verification: *

What kind of packets does the OSPF protocol use to request LSAs that are missing locally?

• A.LSACK
• B.LSU
• C.LSR
• D.HELLO

Comment: *

Name: *

Email: *

Verification: *