Q.1

A global network of millions of business, government, educational, and research networks; computer systems; database; and end users. Select the best fit for answer:

  • Internet works
  • The Internet
  • Internet revolution
  • Internet technologies
  • None of the above
Q.2

A central computer surrounded by one or more satellite computers is called a

  • bus network
  • ring network
  • star network
  • All of the above
  • None of the above
Q.3

If delays are recorded asbit numbers in arouter network, and delay vectors are exchanged twice a second, how much bandwidth per fill duplex line is occupied by the distributed routing algorithm?

  • 500 bps
  • 1500 bps
  • 5 bps
  • 1000 bps
Q.4

The receive equalizer reduces delay distortions using a

  • tapped delay lines
  • gearshift
  • descrambler
  • difference engine
  • None of the above
Q.5

Four routers have to be interconnected in a point-to-point Network. Each pair of root us may connected by a high-speed line, a medium speed line or a low speed line. Find the total number of topologies.

  • 12
  • 81
  • 48
  • 729
Q.6

To connect a computer with a device in the same room, you might be likely to use

  • a coaxial cable
  • a dedicated line
  • a ground station
  • All of the above
Q.7

Demodulation is a process of

  • converting analog to digital signals
  • converting digital to analog signals
  • multiplexing various signals into one high speed line signals
  • performing data description.
Q.8

Which of the following statement is correct?

  • Satellite transponders contain a receiver and transmitter designed to relay microwave transmissions from one point on earth to another.
  • Satellite transponders contain a device that echos the radiation without change from one point on earth to another.
  • Satellite transponder contains devices that transform the message sent from one location on earth to a different code for transmission to another location.
  • Satellite transponders use lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations
  • None of the above
Q.9

A distributed network configuration in which all data/information pass through a central computer is

  • bus network
  • star network
  • ring network
  • Point-to-point network
  • None of the above
Q.10

Which of the following TCP/IP protocol allows an application program on one machine to send a datagram to an application program on another machine?

  • UDP
  • VMTP
  • X.25
  • SMTP
  • None of the above
Q.11

What is the default subnet mask for a class C network?

  • 127.0.0.1
  • 255.0.0.0
  • 255.255.0.0
  • 255.255.255.0
  • None of the above
Q.12

Which of the following is used for modulation and demodulation?

  • modem
  • protocols
  • gateway
  • multiplexer
  • None of the above
Q.13

Usually, it takes 10-bits to represent one character. How many characters can be transmitted at a speed ofBPS?

  • 10
  • 12
  • 120
  • 1200
  • None of the above
Q.14

To connect a computer with a device in the same room, you might be likely to use

  • a coaxial cable
  • a dedicated line
  • a ground station
  • All of the above
  • None of the above
Q.15

Your company has a LAN in its downtown office and has now set up a LAN in the manufacturing plant in the suburbs. To enable everyone to share data and resources between the two LANs, what type of device(s) are needed to connect them? Choose the most correct answer.

  • Modem
  • Cable
  • Hub
  • Router
Q.16

The term 'duplex' refers to the ability of the data receiving stations to echo back a confirming message to the sender. In full duplex data transmission, both the sender and the receiver

  • cannot talk at once
  • can receive and send data simultaneously
  • can send or receive data one at a time
  • can do one way data transmission only
  • None of the above
Q.17

Satellite-Switched Time-Division Multiple Access (SS/TDMA) is

  • the method of determining which device has access to the transmission medium at any time.
  • a medium access control technique for multiple access transmission media
  • a form of TDMA in which circuit switching is used to dynamically change the channel assignments
  • All of the above
  • None of the above
Q.18

Telecommunication networks frequently interconnect an organization with its customers and suppliers. Select the best fit for answer:

  • Bandwidth alternatives
  • Switching alternating
  • Inter organizational networks
  • Extranets
Q.19

With an IP address ofyou currently havesubnets. What subnet mask should you use to maximize the number of available hosts?

  • 192
  • 224
  • 240
  • 248
  • 252
Q.20

HOSTS file entries are limited to how many characters?

  • 8
  • 255
  • 500
  • Unlimited
  • None of the above
Q.21

A network consists of eight NT servers. You are planning to move servers to different segments of your network, what utility should be used at each server to determine which server generates the most traffic?

  • NBTSTAT
  • NETSTAT.EXE
  • Performance Monitor
  • Network Monitor
  • ARP.EXE
Q.22

Internet-like networks between a company and its business partners. Select the best fit for answer:

  • Bandwidth alternatives
  • Switching alternating
  • Inter organizational networks
  • Extranets
Q.23

The modern enterprise is interconnected internally and externally by the Internet, intranets, and other networks. Select the best fit for answer:

  • Internetworked enterprise
  • Information super highway
  • Business applications of telecommunications
  • Client/Server networks
  • None of the above
Q.24

The data communication support should include, but is not restricted to

  • file transfer and transaction processing
  • file and database access
  • terminal support, electronic mail and voice grams.
  • All of the above
Q.25

A remote batch-processing operation in which data is solely input to a central computer would require a:

  • telegraph line
  • simplex lines
  • mixedband channel
  • All the above
  • None of the above
Q.26

Which of the following is not a disadvantage of wireless LAN?

  • Slower data transmission
  • higher error rate
  • interference of transmissions from different computers
  • All of the above
Q.27

Internet-like networks within an enterprise.

  • Intranets
  • Switching alternating
  • Inter organizational networks
  • Extranets
Q.28

How many hosts are attached to each of the local area networks at your site?

  • 128
  • 254
  • 256
  • 64
  • None of the above
Q.29

When you ping the loopback address, a packet is sent where?

  • On the network
  • Down through the layers of the IP architecture and then up the layers again
  • Across the wire
  • through the loopback dongle
  • None of the above
Q.30

The packets switching concept was first proposed

  • in the late 1980s for the Defense Ministry of US.
  • in the early 1960s for military communication systems, mainly to handle speech
  • in the late 1950s for Defense Ministry of US
  • All of the above
  • None of the above
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