TCP is a reliable connection-oriented protocol for connection. Which of the following mechanisms is used to guarantee the reliability of transmission? (multiple choice)
A. Acknowledgement mechanism
B. Buffering
C. Source quench messages (source quench messages)
D. Retransmit mechanism
Which of the following are the characteristics of TCP? (multiple choice)
A. Applicable to applications that are more concerned with transmission efficiency
B. Connection oriented
C. High overhead
D. No connection
The protocol converges quickly and uses the link bandwidth to calculate the best route to the destination network segment. It is commonly used in routing protocols for medium and large networks. What are the options? (multiple choice)
A. BGP
B. OSPF
C. ISIS
D. RIP
When the interface is running in RIPv2 broadcast mode, what messages can it receive? (multiple choice)
A. RIPv1 broadcast message
B. RIPv1 multicast packet
C. RIPv2 broadcast message
D. RIPv2 multicast packet
It consists of glass fiber and shielding layer, is not affected by electromagnetic signals, has high
transmission rate and long transmission distance. But it is expensive.
What is this physical medium?
A. Same transmission cable
B. Twisted pair
C. Fiber
D. Waveguide fiber
The switch is based on which of the following options is used for data forwarding?
A. Source MAC address
B. Destination MAC address
C. Source IP address
D. Destination IP address
In order to check whether the serial port s0/1 on the Quidway router works in DTE or DCE mode, which of the following commands should be used?
A. display controller serial
B. display saved-config
C. display interface s0/1
D. display current-config
Which of the following statements about DR in an OSPF network is correct? (multiple choice)
A. There must be a DR in an OSPF area;
B. DR must be negotiated between routers in accordance with the provisions of the agreement
C. Only the router with the highest priority in the network can become the DR.
D. DR is selected only in NBMA or broadcast networks.
How many bits are included in the VLAN tag to identify the VLAN to which the data frame belongs?
A. 4
B. 32
C. 12
D. 8
When a company applies to the 192.168.1.0/24 network segment, the largest sub-company that needs to be assigned to 5 subsidiaries has 8 computers. In each network segment, what are the following subnet mask digits? (multiple choice)
B. 27
C. 28
D. 29
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