BDR must exist in broadcast networks

If the priority is the same, compare the Router ID, the larger the value, the more
preferred to be elected as the DR

DR must exist in broadcast networks

If the priority of an interface is, the interface will not participate in the election of DR or
BDR

True

False

G0/0/1 of SWB

SWC's G0/0/2

SWA's G0/0/3

SWC's G0/0/1

9600bps, 8 data bits, 1 stop bit, even parity and hardware flow control

9600bps, 8 data bits, 1 stop bit, no checksum and no flow control

4800bps, s data bit, 1 stop bit, odd checksum and no flow control

In the Establish phase, the PPP link performs LCP parameter negotiation. The
negotiation content includes the maximum receiving unit MRU, authentication method
magic word and other options

After the NCP negotiation is successful, the PPP link will maintain the communication
state and enter the Terminate phase

The Dead phase is also called the physical layer unavailable phase. When both ends of
the communication parties detect that the physical circuit is activated, they will migrate from
the Dead phase to the Establish phase, which is the link establishment phase

In the Network phase, the PPP link performs NCP negotiation. Select and configure a
network layer protocol through NCP negotiation, E.PPP link supports half-duplex and fullduplex
modes

Enable proxy ARP on port G0/0/1 of the router,Then host A can communicate with host B

The data packet sent by host B with the destination P address of 10.0.12.1 can be
forwarded to host A

The data packet sent by host A with the destination P address 10.0.12.1 (this address is
changed to 11.0.12.1) can be forwarded to host B

D. Host A and Host B cannot communicate in both directions

data link layer

Network layer

Physical layer

Transport layer

UDP is suitable for the transmission of delay-sensitive traffic, and can be reorganized
according to the sequence number field in the message header

Well-known port number range is 0-1023

UDP uses the STNOACK flag to request and confirm the establishment of a connection

The establishment of a TCP connection is a three-way handshake, and the termination
of a TCP connection requires a four-way handshake.