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質問 1：
The command to configure the interface Ethernet1/0/1 on the switch SWA as an edge port is ______.
A. [SWA-Ethernet1/0/1] stp edged-port enable
B. [SWA-Ethernet1/0/1] stp enable edged-port
C. [SWA] stp enable edged-port
D. [SWA] stp edged-port enable
正解：A
質問 2：
The TFTP protocol is a protocol based on ______.
A. UDP
B. SSH
C. TCP
D. IPX
正解：A
質問 3：
The two WAN interfaces S1/0 and S1/1 of the router MSR-1 are connected to the routers MSR-2 and MSR-3 respectively.
At the same time, the Ethernet port of MSR-1 is connected to MSR-4. All four routers have run the RIP protocol and completed routing learning correctly. All routers have started all the features of RIP to prevent loops. At this time, it is found that the MSR If the network 192.168.0.0 on -2 fails, then ______. (Multiple choice)
A. The cost of the 192.168.0.0 routing item on the MSR-2 is set to the maximum value
B. MSR-2 will start the suppression time for the 192.168.0.0 routing item
C. On the MSR-4, the suppression time will also be activated for the 192.168.0.0 routing item
D. In the routing tables on the four routers, the cost of the 192.168.0.0 routing item is set to the maximum value
正解：A,B,C,D
質問 4：
119.100.1100 1000
132.119.100.1100 1111 .... Broadcast address
13. The well-known port number of the transport layer used by TFTP is ______.
A. 69
B. 68
C. 53
D. 67
正解：A
質問 5：
On MSR routers, the -m parameter of the ping command specifies the time interval for sending ICMP Echo Request packets, ranging from 1 to 65535 in milliseconds, and its default value is ______ milliseconds.
A. 200
B. 1000
C. 100
D. 2000
正解：A
質問 6：
A network environment looks like:
HostA----GE0/0--MSR-1--S1/0-----Frame Relay----S1/0--MSR-2--GE0/0----HostB
Among them, two routers MSR-1 and MSR-2 connect to the frame relay network through S1/0 respectively. Configure IP addresses 3.3.3.1/24 and DLCI 31 on the S1/0 interface of MSR-1, and configure IP addresses 3.3.3.2/24 and DLCI 82 on the S1/0 interface of MSR-2. The physical connection is completely normal, and the other default configurations are the same.
So which of the following statements are wrong? (multiple choice)
A. On a frame relay network, DLCI 31 can identify MSR-1, and DLCI 82 can identify MSR-2.
B. After configuring the command ip address negotiate on the S1/0 interface of MSR-1, it can dynamically obtain the address from MSR-2.
C. On a frame relay network, the corresponding relationship between DLCI 31 connected to MSR-1 and DLCI 82 connected to MSR-2 must be correctly configured, so that the S1/0 interfaces of the two routers can communicate with each other.
D. In the frame relay network exchange process, the source DLCI is always 31, and the destination DLCI will change. Until the last hop, the destination DLCI becomes 82.
正解：A,B,D
質問 7：
Which of the following statements about IP addresses are correct is ______. (Multiple choice)
A. The first byte of class A address is 0~126 (127 is reserved for other use)
B. IP address consists of two parts: network number and host number
C. The IP address with all zeros in the host number is called the network address, which is used to identify all hosts in a network.
D. IP address is usually expressed in dotted decimal notation, for example: 10.110.168.121
正解：B,D
質問 8：
An MSR router needs to learn routing information through RIP, and the following configuration is made on the router: rip 1 network 0.0.0.0 Then the correct explanation for this configuration is ______.
A. RIP will publish a default route of 0.0.0.0
B. This configuration is incorrect
C. When RIP is not enabled on this router
D. All interfaces on this router enable RIP
正解：D
質問 9：
Which of the following statements about optical fiber are correct? (multiple choice)
A. Multimode fiber has a thinner core
B. When using multi-mode fiber, the maximum signal transmission distance is longer than single-mode fiber
C. Multimode fiber can transmit light of different wavelengths and different incident angles
D. The cost of multimode fiber is lower than that of single mode fiber
正解：C,D
The command to configure the interface Ethernet1/0/1 on the switch SWA as an edge port is ______.
A. [SWA-Ethernet1/0/1] stp edged-port enable
B. [SWA-Ethernet1/0/1] stp enable edged-port
C. [SWA] stp enable edged-port
D. [SWA] stp edged-port enable
正解：A
質問 2：
The TFTP protocol is a protocol based on ______.
A. UDP
B. SSH
C. TCP
D. IPX
正解：A
質問 3：
The two WAN interfaces S1/0 and S1/1 of the router MSR-1 are connected to the routers MSR-2 and MSR-3 respectively.
At the same time, the Ethernet port of MSR-1 is connected to MSR-4. All four routers have run the RIP protocol and completed routing learning correctly. All routers have started all the features of RIP to prevent loops. At this time, it is found that the MSR If the network 192.168.0.0 on -2 fails, then ______. (Multiple choice)
A. The cost of the 192.168.0.0 routing item on the MSR-2 is set to the maximum value
B. MSR-2 will start the suppression time for the 192.168.0.0 routing item
C. On the MSR-4, the suppression time will also be activated for the 192.168.0.0 routing item
D. In the routing tables on the four routers, the cost of the 192.168.0.0 routing item is set to the maximum value
正解：A,B,C,D
質問 4：
119.100.1100 1000
132.119.100.1100 1111 .... Broadcast address
13. The well-known port number of the transport layer used by TFTP is ______.
A. 69
B. 68
C. 53
D. 67
正解：A
質問 5：
On MSR routers, the -m parameter of the ping command specifies the time interval for sending ICMP Echo Request packets, ranging from 1 to 65535 in milliseconds, and its default value is ______ milliseconds.
A. 200
B. 1000
C. 100
D. 2000
正解：A
質問 6：
A network environment looks like:
HostA----GE0/0--MSR-1--S1/0-----Frame Relay----S1/0--MSR-2--GE0/0----HostB
Among them, two routers MSR-1 and MSR-2 connect to the frame relay network through S1/0 respectively. Configure IP addresses 3.3.3.1/24 and DLCI 31 on the S1/0 interface of MSR-1, and configure IP addresses 3.3.3.2/24 and DLCI 82 on the S1/0 interface of MSR-2. The physical connection is completely normal, and the other default configurations are the same.
So which of the following statements are wrong? (multiple choice)
A. On a frame relay network, DLCI 31 can identify MSR-1, and DLCI 82 can identify MSR-2.
B. After configuring the command ip address negotiate on the S1/0 interface of MSR-1, it can dynamically obtain the address from MSR-2.
C. On a frame relay network, the corresponding relationship between DLCI 31 connected to MSR-1 and DLCI 82 connected to MSR-2 must be correctly configured, so that the S1/0 interfaces of the two routers can communicate with each other.
D. In the frame relay network exchange process, the source DLCI is always 31, and the destination DLCI will change. Until the last hop, the destination DLCI becomes 82.
正解：A,B,D
質問 7：
Which of the following statements about IP addresses are correct is ______. (Multiple choice)
A. The first byte of class A address is 0~126 (127 is reserved for other use)
B. IP address consists of two parts: network number and host number
C. The IP address with all zeros in the host number is called the network address, which is used to identify all hosts in a network.
D. IP address is usually expressed in dotted decimal notation, for example: 10.110.168.121
正解：B,D
質問 8：
An MSR router needs to learn routing information through RIP, and the following configuration is made on the router: rip 1 network 0.0.0.0 Then the correct explanation for this configuration is ______.
A. RIP will publish a default route of 0.0.0.0
B. This configuration is incorrect
C. When RIP is not enabled on this router
D. All interfaces on this router enable RIP
正解：D
質問 9：
Which of the following statements about optical fiber are correct? (multiple choice)
A. Multimode fiber has a thinner core
B. When using multi-mode fiber, the maximum signal transmission distance is longer than single-mode fiber
C. Multimode fiber can transmit light of different wavelengths and different incident angles
D. The cost of multimode fiber is lower than that of single mode fiber
正解：C,D
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