H12-811 Online Practice Questions and Answers

Which of the following statements are correct for the MAC address of the existing switch? ()

A. MAC. The address 5489-9885-18a8 is manually configured by the administrator

B. MAC. The address 5489-9811-0b49 is manually configured by the administrator

C. MAC. Address 5489-989d-1d30 is manually configured by the administrator

D. After the switch restarts, all MAC addresses need to be re-learned

As shown in the figure, if the command ping 10.1.1.2 is executed on R1, the data frame of VLAN 10 received from LSW2 by LSW1 is tagge()(True or False)

A. True

B. False

UDP is connectionless and must rely on () to ensure the reliability of transmission.

A. Transmission Control Protocol

B. Network layer protocol

C. Application layer protocol

The IEEE802.11astandard only supports the 5GHz frequency band ()

A. True

B. False

NFV (Network Functional Virtualization), network function virtualization, realizes the deployment of network applications in a software-based way. ()

A. True

B. False

In the campus network, the reliability of the network can be improved by using link aggregation and stacking technology. ()

A. True

B. False

By default, on the broadcast networkOSPFWhat is the transmission period of the protocol HELLO message? ()

A. 10s

B. 40s

C. 30s

D. 20s

If the administrator wants to completely delete the old device configuration file, the following command is correct ().

A. clear config.zip

B. delete /unreserveD.config.zip

C. delete /force config.zip

D. reset config.zip

What are the advantages of using dynamic host configuration protocol DHCP to assign IP addresses? ()*

A. Heavy workload and difficult to manage

B. can be realized IP address reuse

C. avoid IP address conflict

D. When the configuration information changes (such as DNS), only the administrator needs to modify it on the DHCP server, which is convenient for unified management

When redundant links exist on a switching network, STP can be used to eliminate loops.

A. True

B. False