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Q.1
After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?
Telex
Word processor
Facsimile
Electronic mail
None of the above
Q.2
Which file transfer protocol uses UDP?
NFS
TELNET
TFTP
FTP
None of the above
Q.3
Error detection at the data link level is achieved by?
Bit stuffing
Hamming codes
Cyclic Redundancy codes
Equalization
None of the above
Q.4
The size or magnitude of a voltage or current waveform is
Amplitude
Aloha
Angle Modulation
Attenuation
None of the above
Q.5
Which of the following network access standard is used for connecting stations to a circuit-switched network?
X.3
X.21
X.25
X.75
None of the above
Q.6
To make possible the efficient on-line servicing of many teleprocessing system users on large computer systems, designers are developing
communication systems
multiprogramming systems
virtual storage systems
All of the above
None of the above
Q.7
Which of the following best describes the scopes on each DHCP server, in the absence of configuration problems with DHCP addresses, if you use multiple DHCP servers in your environment?
Unique to that subnet only
For different subnets
For no more than two subnets
For no subnets
None of the above
Q.8
You are working with a class C network. You are required to configure it for five subnets, each of which will support 25 nodes. What subnet should you use?
255.255.255.0
255.255.255.224
255.255.255.240
255.255.255.248
255.255.255.252
Q.9
The main difference between TCP and UDP is
UDP is connection oriented where as TCP is datagram service
TCP is an Internet protocol where as UDP is an ATM protocol
UDP is a datagram where as TCP is a connection oriented service
All of the above
None of the above
Q.10
What operates in the Data Link and the Network layer?
NIC
Bridge
Brouter
Router
None of the above
Q.11
What is the name of the computer based EMMS that provides a common forum where users can check in at their convenience, post messages, actively exchange ideas and participate in ongoing discussions?
E-mail
Bulletin board system (BBS)
Teleconferencing
Videoconferencing
None of the above
Q.12
A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. If Delta modulation is selected, then how many bits per second are actually sent?
32 kbps
8 kbps
128 kbps
64 kbps.
None of the above
Q.13
A 4 KHz noiseless channel with one sample every 125 per sec, is used to transmit digital signals. Find the bit rate (bits per second) that are sent, if CCITT 2.048 Mbps encoding is used.
500 Kbps
32 Kbps
8 Kbps
64 Kbps
None of the above
Q.14
A network that requires human intervention of route signals is called a
bus network
ring network
star network
T-switched network
None of the above
Q.15
How can you see the address of the DHCP server from which a client received its IP address?
By using Advanced Properties of TCP/IP
By using IPCONFIG/ALL
By using DHCPINFO
By pinging DHCP
None of the above
Q.16
You are working with a network that has the network ID 192.168.10.0. What subnet should you use that supports up to 12 hosts and a maximum number of subnets?
255.255.255.192
255.255.255.224
255.255.255. 240
255.255.255.248
255.255.255.252
Q.17
What is the port number for POP3?
110
90
80
49
Q.18
Which of the following provides a storage mechanism for incoming mail but does not allow a user to download messages selectively?
SMTP
DHCP
IMAP
POP3
2
Q.19
In a synchronous modem, the receive equalizer is known as
adaptive equalizer
impairment equalizer
statistical equalizer
compromise equalizer
None of the above
Q.20
Alex is required to provide information on how many people are using the network at any one time. Which network will enable him to do so?
Server-based
Token-Ring
Ethernet
Star
Peer-to-peer
Q.21
Which of the following statements is incorrect?
Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of data on one communication line.
HDLC is a standard synchronous communication protocol.
RTS/CTS is the way the DTE indicates that it is ready to transmit data and the way the DCE indicates that it is ready to accept data.
RTS/CTS is the way the terminal indicates ringing
None of the above
Q.22
Which application allows a user to access and change remote files without actual transfer?
TELNET
NFS
FTP
DNS
None of the above
Q.23
Parity bit is
an error-detecting code based on a summation operation performed on the bits to be checked.
a check bit appended to an array of binary digits to make the sum of all the binary digits.
a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and
the ratio of the number of data units in error to the total number of data units
None of the above
Q.24
On a class C network with a subnet mask of 192, how many subnets are available?
254
62
30
14
2
Q.25
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.26
Now-a-days computers all over the world can talk to each other. Which is one of the special accessories essential for this purpose?
Keyboard
Modem
Scanner
Fax
None of the above
Q.27
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.28
For connecting modem, a computer must be equipped with a port that conforms to the RS-232 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.29
Which of the following file retrieval methods use hypermedia?
HTTP
WAIS
Veronica
Archie
None of the above
Q.30
Which IP address class has few hosts per network?
D
C
B
A
None of the above
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