In the OSI reference model, what can complete end-to-end error detection and flow control is ()

A.

Physical layer

B.

data link layer

C.

Network layer

D.

Transport layer

VRP operating system commands are divided into four levels: access level, monitoring
level, configuration level, and management level. Which level can run various business
configurations and set commands but cannot operate the file system?

A.

Configuration level

B.

Access level

C.

Management level

D.

Monitoring level

The subnet mask of a network segment 150.25.0.0 is 255.255.224.0, then () is a valid host
address in this network segment. ()

A.

150.25.2.24

B.

150.25.0.0

C.

150.25.1.255

D.

150.15.3.30

Both pwD. and dir commands in the VRP operating platform can view the file information in the current directory, ()

A.

True

B.

False

The switch becomes a logical switch after stacking and clustering, and Eth-Trunk across
physical devices can be deployed to improve network reliability. ()

A.

True

B.

False

Which of the following statements about VLANIF interfaces are correct? ()

A.

The VANIF interface does not need to learn MAC addresses.

B.

The VLANTF interface does not have a MAC address.

C.

Different VLANIF interfaces can use the same IP address

D.

The VLANIF interface is a Layer 3 interface

Which of the following IEEE802.11 standards does not support the 5GHz frequency band for communication? ()

A.

802.11g

B.

802.11aC.wave 2

C.

802.11aC.wave 1

D.

802.11n

In the broadcast network, OSPF runs on four routers in the same area and on the same
network segment. OSPF will automatically elect one DR and multiple BDRs to achieve a
better backup effect ()

A.

True

B.

False

Which information of the data frame is used by the VLANIF interface to determine whether
to perform Layer 2 or Layer 3 forwarding? ()

A.

Destination MAC

B.

Source MAC

C.

Destination port

D.

Source IP

Which stage in the life cycle of campus network construction is the beginning of a project?
()

A.

Network implementation

B.

Planning and design

C.

Network operation and maintenance