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H3C Constructing Small - and Medium - Sized Enterprise Network Sample Questions:

1. The following statement about the functions of each layer of the OSI reference model is correct. ______. (Multiple choice)

A) The basic function of the transport layer is to establish and maintain virtual circuits, perform error checking and flow control.
B) The session layer is responsible for data format processing, data encryption, etc.
C) The physical layer refers to the original bit stream transmitted on the communication channel (Channel), which defines the mechanical and electrical functions and procedures required for data transmission.
D) The network layer decides the best route for transmitting the message. The key issue is to determine how the data packet is routed from the source to the destination.
E) The application layer is responsible for providing network services for applications.

2. The transport layer protocol that DNS can use is ______.

A) UDP
B) NCP
C) TCP
D) TCP or UDP

3. On the MSR router, you can see the following display in the routing table:
Destination/Mask Proto Pre Cost NextHop Interface
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
192.168.96.0/24 Static 60 0 192.168.120.153 S6/0
Then the correct description of the route with the destination address of 192.168.96.0/24 is ______.

A) This is a direct route with a metric value of 0
B) The interface IP address of S6/0 on this router is 192.168.120.153
C) This is a manually configured static route with a metric value of 0
D) The next hop of the router, that is, the IP address of the peer device is 192.168.120.153

4. In the process of establishing a PPP session, when the physical layer is unavailable, the PPP link is in the ______ phase.

A) Establish
B) Dead
C) Network
D) Authentication
E) Terminate

5. The following devices working at the data link layer of the OSI reference model are ______.

A) Hub
B) WAN switch
C) Repeater
D) Router

Solutions: