Rajasthan Technical Education Second Year Paper 2016 -Data Communication

Rajasthan Technical Education Second Year Paper 2016 -Data Communication

_____________ are used for cellular phone, satellite, and wireless LAN.
(a) Radio waves
(b) Infrared waves
(c) Microwaves
(d) None of the above

The hamming distance between equal code words is _______
(a)
0
(b) 1
(c) N
(d) None of the above

HDLC is an acronym for ________
(a) Halfduplex Digital Link Combination
(b) High-level Data Link Control
(c) High-Duplex Line Communication
(d) Host Double-Level Circuit

______________ refers to a set of procedures used to restrict the amount of data that the sender can send before waiting for acknowledgement.
(a) Flow control
(b) Error control
(c) Transmission control
(d) None of the above

ARQ stands for _________
(a) Acknowledge Repeat Request
(b) Automatic Retransmission Request
(c) Automatic Repeat Quantization
(d) Automatic Repeat Request

A television broadcast is an example of _________transmission
(a) Simplex
(b) Half-Duplex
(c) Full-Duplex
(d) Automatic

An analog multiplexing technique that combines analog signals is called
(a) FDM
(b) TDM
(c) WDM
(d) COMA

If all devices are connected with a central hub, Topology is
(a) Bus Topology
(b) Ring Topology
(c) Star Topology
(d) Tree Topology

Light source in Optical Fiber Cable may be a
(a) LASER
(b) LED
(c) Both (a) & (b)
(d) None of the above

HDLC station can be a
(a) Primary Station
(b) Secondary Station
(c) Combined Station
(d) All of the above

Bit Rate is number of bits sent in
(a) 1 sec
(b) 2 sec
(c) 10 sec
(d) 100 sec

Layer, which is used for interface between system and user, is
(a) Network
(b) Application
(c) Data link
(d) Session

Frame relay networks can use
(a) Only BECN
(b) ONly FECN
(c) Both (a) & (b)
(d) None of the above

Infrared signals can be used for
(a) Long-range communication
(b) Short-range communication
(c) Both (a) & (b)
(d) None of these

OSI Model has ___________layers.
(a) 4
(b) 5
(c) 6
(d) 7