Objective questions on Networking and Data Communications

M.Sc Electronics Semester IV Exam Oct/Nov 2019 Shivaji University Kolhapur

In byte stuffing process ______ is added if a flag like structure appears in the data
(a) Flag
(b) ESC
(c) 0 bit
(d) 1 bit

The _____ address uniquely defines a host on the internet.
(a) IP
(b) Port
(c) specific
(d) physical

In IEEE 802, 11, a BSS without an AP is called as _____ architecutre.
(a) BSS
(b) ad hoc
(c) ESS
(d) BSS transition

The address field of a PPP frame is _____ for broadcast address.
(a) 10101010
(b) 11111111
(c) 01010101
(d) 01111110

In OSI model Trailer bit is added at ___ layer
(a) Physical
(b) Network
(c) Data Link
(d) Application

Network interface card provides ____ address of the device
(a) Logical
(b) Port
(c) Specific
(d) Physical

Circuit switched networks use ______ t echnique to divide each link into ‘n’ channels.
(a) FDM
(b) WDM
(c) PCM
(d) DM

Network security services uses _____ for message authentication
(a) Encryption
(b) Decryption
(c) Digital signature
(d) Symmetric key

Transmission Control Protocol is a _____ protocol
(a) stream oriented
(b) bit oriented
(c) connectionless
(d) byte oriented

Photonic layer corresponds to ____ layer of the OSI model.
(a) Data link
(b) Network
(c) Transport
(d) Physical

A composite signal is a combination of ______
(a) Simple sine waves of different phases
(b) Simple cosine waves of different amplitudes
(c) Sine waves of different frequency
(d) Sine waves of different wavelength

The PPP does not provide services for _____
(a) multiple link connections
(b) error control
(c) flow control
(d) negotiation

Channel 0 of DMT technique is reserved for ____
(a) Voice communication
(b) Downstream bits
(c) Idle use
(d) Upstream bits

In NRZ-L ______ can dtermine the value of the bit
(a) Voltage level inversion
(b) lack of voltage level inversion
(c) signal frequency
(d) only voltage level