On VRP platform, the command lines are classified into four levels in increasing priority: Visit level, Monitoring level, Configuration level, and Management level. At which level, the operator is permitted to configure service but is not permitted to operate the file system?

A. Visit level

B. Monitoring level

C. Configuration level

D. Management level

Which of the following statements regarding link-state database and routing-table of a "single" OSPF area are correct? (Choose two)

A. The link-state databases that all routers build are identical.

B. The link-state databases that all routers build are different.

C. The routing-tables that all routers calculate are different.

D. The routing-tables that all routers calculate are identical.

PPP is more secure and reliable than HDLC because PPP supports (). (multiple choice)

A. PAP

B. MD5

C. CHAP

D. SSH

The following is a mistake in the priority of static routes in Huawei devices ().

A. The static router priority value ranges from 0 255

B. The default value of static router priority is 60.

C. The priority of static routes is divided into internal priority and external priority. Administrators can modify external priority.

D. The priority value of the static route is 255, indicating that the route is unavailable.

The CHAP authentication command enabled in .PPP is: ppp chap authentication.

A. Correct

B. Error

What command can I type in system view to switch to user view?

A. system-view

B. router

C. quit

D. user-view

The following description of the specified port for the spanning tree is correct.

A. There is only one designated port per bridge

B. The designated port can forward configuration BPDUs to its connected network segment.

C. The port on the root switch must not be the designated port.

D. Specify the port to forward configuration BPDUs from this switch to the root switch.

While improving network reliability, STP can also solve loop problems in switched networks.

A. Correct

B. Error

Which of the following statements about a port on a switch is false?

A. If the port receives data frames without VLAN tags, the switch needs to add VLAN tag 200.

B. If the VLAN tag carried in a data frame is 100, the switch removes the VLAN tag and sends the frame.

C. The link type of the port is trunk.

D. The port cannot send data frames carrying VLAN tag 200.

You can run the "startup saved-configuration backup.cfg" command on the user interface of the Versatile Routing Platform (VRP) to specify the "backup.cfg" file as the configuration file for next startup.

A. True

B. False