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- CWTS PW0-071
11.
The term encapsulation means to
- A.Add an IP address to a network adapter
- B.Add a MAC address to a network adapter
- C.Add topology information to a frame
- D.Add layer header and trailer information to a payload
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| Encapsulation is adding header and trailer information to a frame. The MAC address is a physical address assigned by the device manufacturer. The IP address is the logical address assigned to a device and the topology is the physical arrangement of devices in a network. |
12.
Which of the following is an accurate description of peer communication (Choose 2)?
- A.The horizontal link between devices on the network
- B.The vertical link between devices on the network
- C.The logical link between devices on the network
- D.The physical link between devices on the network
- Answer & Explanation
- Report
Answer : [A, C]
Explanation :
Explanation :
| Peer communication is a logical or “horizontal” link between devices. The vertical link would be equivalent to the encapsulation between layers. The physical link is related to addressing. |
13.
Physical addresses on a network device are responsible for which of the following?
- A.To identify the logical location on the network
- B.To identify which device should receive the information
- C.To identify the routing information on the network
- D.To identify the protocol in use on the network
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| The physical address of a network device determines the actual hardware address and is used to identify the source and destination of a frame. The routing information is part of the logical addressing process as well as the logical location. |
14.
At which layer of the OSI model are bits compiled into frames?
- A.Physical
- B.Data Link
- C.Network
- D.Transport
- F.Application
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| The Data Link layer of the OSI model is responsible for compiling or packaging bits into frames. The Physical layer allows frames to be sent and received across a medium. The Transport layer is responsible for connection-oriented or connectionless protocols. The Network layer is responsible for addressing and routing of frames, and the Application layer is the interface to the user. |
15.
Which protocol is used to guarantee delivery?
- A.UDP
- B.IP
- C.ARP
- D.TCP
- F.HTTP
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| TCP is a connection-oriented protocol that uses acknowledgments. UDP is a connectionless protocol and does not guarantee delivery. IP is used for addressing and routing. ARP is used to resolve physical addresses to logical addresses, and HTTP is an Application layer protocol. |
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