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- CWTS PW0-071
6.
Which layer of the OSI model is responsible for addressing and routing?
- A.Physical
- B.Network
- C.Transport
- D.Application
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| The Network layer is responsible for addressing and routing of information. The Physical layer consists of bit-level data streams and computer network hardware connecting the devices together. The Transport layer is for connectionoriented and connectionless communications. The Application layer provides an interface to the user, and the Transport layer is for connection-oriented and connectionless communications. |
7.
_________________ allows for Application layer data communication between two stations
using lower layers as a support system.
- A.Logical addressing
- B.Physical addressing
- C.Data encapsulation
- D.Data encryption
- E.Point-to-point
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Encapsulation allows for Application layer data communication between two stations using lower layers as a support system. Logical addressing is the Layer 3 or IP address, and physical addressing is the hardware or media access control address. Data encryption scrambles the data, and point-to-point communications may be used to connect LANs together. |
8.
Which topology may use a token passing access method?
- A.Ring
- B.Mesh
- C.Bus
- D.Star
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| The ring topology may use a token passing access method. The bus topology is also known as a high-speed linear bus and was commonly used with early IEEE 802.3 networks. A mesh topology is where each device in the mesh network has one or more connections to other devices. The star topology consists of multiple devices connected by a central connection device and is the most commonly used method of connecting devices on a LAN today. |
9.
Which layer of the OSI model provides an interface to the user?
- A.Physical
- B.Network
- C.Transport
- D.Application
- E.Data Link
- F.Presentation
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| The Application layer provides an interface to the user. The Physical layer consists of bit-level data streams and computer network hardware connecting the devices together. The Data Link layer is responsible for organizing bit-level data for communication between devices on a network. The Presentation layer provides delivery and formatting of information for processing and display, and the Transport layer is for connection-oriented and connectionless communications. |
10.
The physical address of a network adapter is the
- A.MAC address
- B.Logical address
- C.Layer 3 address
- D.Mesh address
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| The media access control (MAC) address is a unique address of the network adapter. The logical address is an IP address as well as the Layer 3 address. |
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