Which of the following statements is correct?

• A.The switch works at the physical layer
• B.The switch works at the network layer
• C.The router works at the physical layer
• D.The router works at the network layer

Comment: *

Name: *

Email: *

Verification: *

When configuring the router through the Console, what is the correct setting of the terminal emulation program?

• A.19200bps, 8 data bits, 1 stop bit, no checksum and no flow control
• B.9600bps, 8 data bits, 1 stop bit, even parity and hardware flow control
• C.9600bps, 8 data bits, 1 stop bit, no checksum and no flow control
• D.4800bps, 8 data bits, 1 stop bit, odd checksum and no flow control

Comment: *

Name: *

Email: *

Verification: *

By default, how long is the lease period of the IP address assigned by the DHCP server?

• A.24h
• B.12h
• C.18h
• D.1h

Comment: *

Name: *

Email: *

Verification: *

If the broadcast address of a network is 172.16.1.255, what might its network address be?

• A.172.16.1.128
• B.172.16.1.1
• C.172.16.1.253
• D.172.16.2.0

Comment: *

Name: *

Email: *

Verification: *

The role of the collaboration layer in the SDN architecture is to complete job deployment based on user intentions. OpenStack belongs to the business collaboration layer.

• A.FALSE
• B.TURE

Comment: *

Name: *

Email: *

Verification: *