0 — Test 309

Correct Answer: D. D. Token ring
Explanation: Token Ring Technology gives specifications for communication protocols in LANs. This technology is more deterministic than Ethernet. It uses Ring topology. This is the only option referring to a technology whereas Hybrid, Fully Connected and Mesh refers to Network topologies.

Correct Answer: A. A. Unshielded twisted pair (utp)
Explanation: 100BaseT4 is one of the three types of Ethernet cable. These physical wiring can carry up to 100 Mbps. 100BaseT4 networks uses Star topology for its connections.

Correct Answer: B. B. False
Explanation: Collision detection is a process that helps in detecting the collision/interference of two data packets in a network. Thus CSMA/CD (Carrier Sense Multiple Access/Collision Detection) is method used for the same in LANs. Whereas CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) is used for avoiding or preventing those collisions.

Correct Answer: B. B. Unicast
Explanation: Data transmission in LAN comes under three types. Those are unicast, multicast, and broadcast. The data packets are sent in the form of a network frame to a node and further it is transmitted on the basis of topology.

Correct Answer: D. D. Physical
Explanation: In an extended network repeaters are used to connect media elements. These repeaters operate on the physical layer of the OSI model. It removes noise from a signal.

Correct Answer: D. D. A single packet is copied and sent to all nodes on the network
Explanation: In LANs the data transmission methods are classified into three types. Those are unicast, multicast, and broadcast. In unicast, a frame is sent from one node to another on a network. In broadcast, a frame or data packet is transmitted from one node to all other nodes on the network. Lastly, in a multicast, the frames are carried in a network to many receivers at the same time.

Correct Answer: D. D. Bridge
Explanation: Bridges are also known as LAN Switches. Bridges are used for connecting two or more LANs. It also helps in forwarding the data packets to these networks.

Correct Answer: D. D. Dumb terminal
Explanation: There are three significant types of Terminals used by LAN. Those are smart terminal, intelligent terminal and dumb terminal. The dumb terminal does not carry out the function of data processing. In central monitoring systems we need terminals that will just carry out the tasks of sending and receiving data packets. Thus dumb terminal is used in such networks.

Correct Answer: B. B. Token-passing
Explanation: Token passing is a channel access method used in Local Area Networks (LANs). It helps in preventing collision in the network. This method uses Ring topology.

Correct Answer: A. A. Time