Q.1

Which of the following is a voiceband channel?

  • Telephone line
  • Telegraph line
  • Coaxial cable
  • Microwave systems
  • None of the above
Q.2

Error detection at a data link level is achieved by

  • bit stuffing
  • cyclic redundancy codes
  • Hamming codes
  • equalization
Q.3

Transmission of computerised data from one location to another is called

  • data transfer
  • data flow
  • data communication
  • data management
  • None of the above
Q.4

Compared to analog signals, digital signals

  • allow faster transmission
  • are more accurate
  • both (a) and (b)
  • All of the above
  • None of the above
Q.5

Which of the following technique is used for encapsulation?

  • a technique used in best-effort delivery systems to avoid endlessly looping packets.
  • a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame.
  • One of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size
  • All of the above
  • None of the above
Q.6

Which layer of OSI determines the interface of the system with the user?

  • Network
  • Application
  • Data-link
  • Session
  • None of the above
Q.7

Messages from one computer terminal can be sent to another by using data networks. The message to be sent is converted to an electronic digital signal, transmitted via a cable, telephone or satellite and then converted back again at the receiving end. What is this system of sending messages called?

  • Paperless office
  • Electronic mail
  • Global network
  • Electronic newspaper
  • None of the above
Q.8

HDLC (High-level Data Link Control) is

  • a method of determining which device has access to the transmission medium at any time
  • a method access control technique for multiple-access transmission media
  • a very common bit-oriented data link protocol issued by ISO.
  • network access standard for connecting stations to a circuit-switched network
  • None of the above
Q.9

A devices that links two homogeneous packet-broadcast local networks, is

  • hub
  • bridge
  • repeater
  • gateway
  • None of the above
Q.10

Identify the odd term amongst the following group:

  • Coaxial cable
  • Optical fibre
  • Twisted pair wire
  • Microwaves
  • None of the above
Q.11

On a class C network with a subnet mask ofhow many subnets are available?

  • 254
  • 62
  • 30
  • 14
  • 2
Q.12

Ethernet and Token-Ring are the two most commonly used network architectures in the world. Jim has heard of the different topologies for networks and wants to choose the architecture that will provide him with the most options. Which of the following would that be? Choose the most correct answer.

  • Token-Ring because it currently can run at both 4Mbps and 16Mbps. This means that it can be used in any topology
  • Ethernet, because it is cabled using fiber-optic cable
  • Token-Ring, because it uses a MAU
  • Ethernet, because it can be set up with most topologies and can use multiple transfer speeds
  • Neither Token-Ring nor Ethernet is the proper choice. Only ARCnet can be used in all topologies
Q.13

MAC is

  • a method of determining which device has access to the transmission medium at any time
  • a method access control technique or multiple-access transmission media
  • a very common bit-oriented data link protocol issued to ISO.
  • network access standard for connecting stations to a circuit-switched network
  • None of the above
Q.14

A required characteristic of an online real-time system is:

  • more than one CPU
  • offline batch processing
  • no delay in processing
  • All of the above
  • None of the above
Q.15

The transport layer protocol is connectionless.

  • NVT
  • FTP
  • TCP
  • UDP
  • None of the above
Q.16

Which of the following specifies the network address and host address of the computer?

  • The IP address
  • The TCP address
  • The subnet mask
  • The default gateway
  • None of the above
Q.17

For connecting modem, a computer must be equipped with a port that conforms to the RS-standard of the Electronic Industries Association of America. What do the letters 'RS' stand for?

  • Recognised standard
  • Random sequence
  • Recommended standard
  • Registered source
  • None of the above
Q.18

Which of the following characteristics is not true of NetBEUI?

  • Highly-customizable
  • Routable
  • Little configuration required
  • Fast for small networks to Self-tuning
Q.19

How many digits of the Network User Address are known as the DNIC (Data Network Identification Code)?

  • first three
  • first four
  • first five
  • first seven
  • None of the above
Q.20

Which of the following is the address of the router?

  • The IP address
  • The TCP address
  • The subnet mask
  • The default gateway
  • None of the above
Q.21

Because the configuration infor-mation for a DHCP client is received dynamically, you must use which utility to read the current configuration to verify the settings?

  • PING
  • TRACERT
  • ARP
  • IPCONFIG
  • None of the above
Q.22

The slowest transmission speeds are those of

  • twisted-pair wire
  • coaxial cable
  • fiber-optic cable
  • microwaves
  • None of the above
Q.23

The first step in troubleshooting many problems is to verify which of the following?

  • The subnet mask is valid
  • TCP/IP is installed correctly on the client
  • The WINS server is running
  • The BDC is operable
  • None of the above
Q.24

Modulation is the process of

  • converting analog signals to digital signals
  • converting digital signals to analog signals
  • Multiplexing various signals into high speed line signals
  • performing data encryption.
Q.25

When the computer provides the manager with a multiple choice of possible answers, the prompting technique is

  • question and answer
  • form filling
  • open-ended question
  • menu selection
  • None of the above
Q.26

You are working with three networks that have the network IDs 192.168.5.192.168.6.and 192.168.7.What subnet mask can you use to combine these addresses into one?

  • 255.255.252.0
  • 225.255.254.0
  • 255.255.255.240
  • 255.255.255.252
Q.27

The transfer of data from a CPU to peripheral devices of a computer is achieved through

  • modems
  • computer ports
  • interfaces
  • buffer memory
  • None of the above
Q.28

Which of the following file retrieval methods use hypermedia?

  • HTTP
  • WAIS
  • Veronica
  • Archie
  • None of the above
Q.29

A hard copy would be prepared on a

  • typewriter terminal
  • line printer
  • plotter
  • All of the above
  • None of the above
Q.30

A decrease in magnitude of current, voltage, a power of a signal in transmission between points, is known as

  • Attenuation
  • Amplitude
  • Aloha
  • Carrier
  • None of the above
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