Security and Physical Layer: Deals with the Physical Connectivity of Two Different Stations

This is a computer science engineering quiz on computer networks, which includes questions on security and physical layer which deals with the physical connectivity of two different states.

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Which network topology requires a central controller or hub?

Star Mesh Ring Bus

_______ topology requires a multipoint connection.

Star Mesh Ring Bus

Which of this is not a guided media?

Fiber optical cable Coaxial cable Wireless LAN Copper wire

Coaxial cable consists of _______ concentric copper conductors.

1 2 3 4

Terrestrial radio channels are broadly classifed into _____ groups.

2 3 4 1

The ________ measures the number of lost or garbled messages as a fraction of the total sent in the sampling period.

Residual Error Rate. Transfer Failure Probability. Connection release failure probability. Connection establish.

Which of the following ISO level is more closely related to the physical communications facilities?

Application Session Networking Data Link

which of the following is not a field in the Ethernet Message packet?

Type Data Pin-code Address

Physical or logical arrangement of network is __________.

Topology

Routing

Networking

Control

Data communication system spanning states, countries, or the whole world is ________.

LAN

WAN

MAN

PAN

Data communication system within a building or campus is________.

LAN

WAN

MAN

PAN

UTP is commonly used in __________.

DSL

FTTP

HTTP

None of the mentioned

Fiber optics posses following properties __________.

Immune electromagnetic interference

Very less signal attenuation

Very hard to tap

All of the mentioned

“BAUD” rate means?

The number of bits transmitted per unit time.

The number of bytes transmitted per unit time.

The rate at which the signal changes.

None of the above

A high speed communication equipment typically would not be needed for?

E-mail

Transferring large volume of data

Supporting communication between nodes in a LAN

All of these

Quiz/Test Summary

Title: Security and Physical Layer: Deals with the Physical Connectivity of Two Different Stations

Questions: 15

Contributed by:

james Wed, Mar 30, 2022 07:50 AM UTC

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