Friday, 13 January 2017



(Answer all the questions)

1. Each question below gives a multiple choice of answers. Choose the most appropriate one and enter in the “OMR” answer sheet supplied with the question paper, following instructions therein. (1x10)
1.1 Protocols are
A) Agreements on how communication components and DTE's are to communicate
B) Logical communication channels for transferring data
C) Physical communication channels sued for transferring data
D) None of the above

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1.2 Which data communication method is used to transmit the data over a serial communication
A) Simplex
B) Half-duplex
C) Full duplex
D) All of the above

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1.3 In communication satellite, multiple repeaters are known as
A) Detectors
B) Modulators
C) Stations
D) Transponders

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1.4 Error detection at the data link layer is achieved by
A) Bit stuffing
B) Cyclic redundancy codes
C) Hamming codes
D) Equalization

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1.5 What are the transmission impairments?
A) Attenuation
B) Distortion
C) Noise
D) All of the above
1.6 The topology with highest reliability is?
A) Bus topology
B) Star topology
C) Ring Topology
D) Mesh Topology

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1.7 Baud means
A) The number of bits transmitted per unit time
B) The number of bytes transmitted per unit time
C) The rate at which the signal changes
D) None of the above

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1.8 In OSI model cable is used in
A) Physical Layer
B) Network layer
C) Transport layer
D) Data link layer

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1.9 The TCP/IP model has
A) 7 layers
B) 3 layers
C) 4 layers
D) 5 layers

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1.10 HTML is
A) Hyper Text Markedup Language
B) Hyper Text Markup Language
C) Hyper Text Marked Language
D) Hyper Text Marking Language
2. Each statement below is either TRUE or FALSE. Choose the most appropriate one and ENTER in the “OMR” answer sheet supplied with the question paper, following instructions therein. (1x10)

2.1 A WAN covers a large geographic distance, such as a state, a country, or even the entire world.
2.2 Coaxial cable and twisted-pair cable are types of wireless media.
2.3 Bandwidth refers to the capacity of the communications line.
2.4 Class A of IP address has the most host addresses available by default.
2.5 There are no collisions in full-duplex mode.
2.6 Frames from one LAN can be transmitted to another LAN via the device modem.
2.7 The default subnet mask for a class C network is
2.8 Contention is the condition when two or more stations attempt to use the same channel at the same time.
2.9 ISO-OSI model has 8 layers.
2. 10 Microwave is a wireless communication technique.

3. Match words and phrases in column X with the closest related meaning/word(s)/phrase(s) in column Y. Enter your selection in the “OMR” answer sheet supplied with the question paper, following instructions therein. (1x10)
                                      X                                                  Y
3.1 Slowest transmission speed                             A. Modulation
3.2 TCP/IP configuration problems reduction      B. Transmission media
3.3 3rd layer of OSI model                                   C. 32
3.4 Network of networks called                            D. Demodulation
3.5 Does not allow multiple users or devices       E. Half duplex
 to share one communications line
3.6 Optical fibre is                                                F. 64
3.7 Standard for Transfer of Electronic Mail       G. twisted-pair wire
3.8 Supports two-way traffic but only one           H. Full Duplex
 direction at a time 
3.9 Length of IPv4                                                I. Internet
3.10 Converting analog to digital signals             J. SMTP
                                                                              K. Doubleplexer
                                                                               L. Network
                                                                              M. DHCP Server
4. Each statement below has a blank space to fit one of the word(s) or phrase(s) in the list below. Enter your choice in the “OMR” answer sheet supplied with the question paper,following instructions therein. (1x10)

A. POP3                              B.                                     C. 40 MHz to 400 MHz
D. CRC                               E.                                     F. Tree network
G. Default gateway             H. Bridge                                        I. 256
J. FTP                                  K. 192.0.0.x to 225.255.255.x        L. MAC
M. Ring network

4.1 ________ is the physical address.
4.2 ________ is standard Protocol used to transfer file between two hosts.
4.3 FDDI is a ________.
4.4 ________ topology can be considered as an extension to BUS topology.
4.5 ________is the standard Protocol for receiving e-mail.
4.6 Error detection at a data link level is achieved by ________.
4.7 ________ is the loopback address.
4.8 ________ is the address of the router.
4.9 ________ is a device that links two homogeneous packet-broadcast local networks.
4.10 ________ is the range for a class C IP address.
(Answer any FOUR questions)

a) What do you mean by E-Commerce? Explain briefly.
b) Describe the 3 classes of network by which the IP addresses are assigned in IPv4.
c) What do you mean by http and ftp? Explain each term.

a) Explain Router, Bridge and Switch.
b) Describe the TCP/IP Model.
c) What do you mean by Web Publishing? Describe the different components of Web Publishing.

a) Write an HTML script to print your name.
b) Write an HTML script to make a table.
c) Write an HTML script to insert hyperlink.
a) Differentiate between Guided and Unguided Media.
b) Write a short note on various measures taken for Internet Security.
c) Differentiate between asynchronous and synchronous communication.

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