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- CWTS PW0-071
1.
At which two layers of the OSI model do wireless LANs operate? (Choose 2.)
- A.Session
- B.Network
- C.Physical
- D.Application
- E.Data Link
- Answer & Explanation
- Report
Answer : [C, E]
Explanation :
Explanation :
| Wireless LAN technology operates at Layers 1 (Physical) and 2 (Data Link) of the OSI model. The Session layer opens, closes, and manages sessions between end-user application processes. The Network layer is responsible for addressing and routing functions of data and the Application layer is the interface to the user. |
2.
A high-speed linear topology is defined as a _________________?
- A.Ring
- B.Mesh
- C.Bus
- D.Star
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| The bus topology is also known as a high-speed linear bus and was commonly used with early IEEE 802.3 networks. The ring topology is rarely used with LANs today but is still widely used by Internet service providers (ISPs) for high-speed, resilient backhaul connections over fi ber-optic links. In a mesh topology, 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. |
3.
The lower three layers of the OSI model are ______________ ,___________ , and __________________.
- A.Data link, Physical, Transport
- B.Physical, Data Link, Network
- C.Session, Physical, Application
- D.Application, Presentation, Session
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| The Physical layer is the lowest layer in the OSI model and 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, and the Network layer is responsible for addressing and routing functions of data. |
4.
The IP address of a network adapter is also known as which address?
- A.MAC address
- B.Logical address
- C.Layer 4 address
- D.Mesh address
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| The logical address is an IP address. The Layer 2 address is the hardware address or physical address on the network adapter. |
5.
Which layer of the OSI model is responsible for organizing bit-level data for communication
between devices on a network and detecting and correcting Physical layer errors?
- A.Application
- B.Transport
- C.Network
- D.Data Link
- E.Physical
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| The Data Link layer is responsible for organizing bit-level data for communication between devices on a network and detecting and correcting Physical layer errors. The Physical layer consists of bit-level data streams and computer network hardware connecting the devices together. The Application layer provides an interface to the user and the Transport layer is for connection-oriented and connectionless communications. |
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