An existing switch is connected to a designated port through a port, but the port does not forward any packets, but can monitor network changes by receiving BPDUs, then the role of the port should be ().
A. Alternate port
B. Disable port
C. Root port
IP route--statiC.10.0.12.0255.255.255.0192.168.1.1 About this command description is correct ()
A. This command configures a route to the 10.0.12.0 network
B. The priority of this route is 100
C. If the router learns a router with the same destination network as this route through other protocols, the router will prefer this route
D. This command configures a route to the 192.168.1.1 network
Which of the following fields is not included in the HELL0 packet of the OSPF protocol? ().
A. Neighbor
B. Network Mask
C. HelloInterval
D. Sysname
Telnet is based on TCP protocol ()
A. True
B. False
Which of the following are not the characteristics of a small campus network? ()
A. Simple network level
B. Fewer users
C. Simple network requirements
D. Wide coverage
PAP authentication is more secure than CHAP authentication because it does not carry passwords in clear text
A. True
B. False
A company has 50 private P addresses, and the administrator uses NAT technology to connect the company's network to the public network, but the company has only one public network address and is not fixeWhich of the following NAT conversion methods meets the requirements? ()
A. easy-ip
B. NAPT
C. Static NAT
D. BasiC.NAT
The CAPWAP protocol stipulates the communication standard between Aand Ap. Which of the following statements about the CAPWAP protocol is correct? ()
A. CAPWAP is an application layer protocol based on TCP transmission
B. In order to establish a CAPWAP tunnel, the FIT Ap can only discover the AC through broadcast messages
C. In order to reduce the burden on the AP, CAPWAP uses a tunnel to simultaneously transmit control messages and data messages
D. The AP can encapsulate the user's data message in CAPWAP and hand it over to the AC.
The following statement about the TTL field in the IP packet header is correct. ()
A. TTL defines the time interval at which the source host can send data packets
B. TTL defines the number of packets that the source host can send
C. Each time a P packet passes through a router, its TTL value will be reduced by 1
D. Each time an IP packet passes through a router, its TTL value is increased by 1
When the switch port receives a data frame that does not carry VLAN TAG, it must add PVI()
A. True
B. False
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