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Networking Miscellaneous
Quiz 16
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Q.1
Which of the following refers to the terms "residual error rate"?
the number of bit errors per twenty four hours of continuous operation on an asynchronous line
The probability that one or more errors will be undetected when an error detection scheme is used
the probability that one or more errors will be detected when an error detection mechanism is used
signal to noise ratio divided by the ratio of energy per bit to noise per hertz
None of the above
Q.2
Which of the following summation operations is performed on the bits to check an error-detecting code?
Codec
Coder-decoder
Checksum
Attenuation
Broadband and baseband refer to the different frequencies at which infrared operates then transmitting signals in certain conditions
Q.3
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.4
Internet-like networks within an enterprise.
Intranets
Switching alternating
Inter organizational networks
Extranets
Q.5
The geostationary satellite used for communication systems
rotates with the earth
remains stationary relative to the earth
is positioned over equator
All of the above
None of the above
Q.6
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
None of the above
Q.7
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
Q.8
The research and development department at your office has been experimenting with different technologies to help improve the performance of the network. One group has been examining the use of a broadband network versus a based band network. Select the correct statement about broadband and baseband.
Broadband networks carry several channels on a single cable, whereas in a baseband network several cables carry one channel
Baseband networks carry a single channel on a single cable, whereas broadband networks carry several channels on a single cable
Baseband refers to local area networks, and broadband refers to wide area networks.
Baseband operates at a standard bit rate, whereas broadband may operate at different rates as needed
Broadband and baseband refer to the different frequencies at which infrared operates then transmitting signals in certain conditions
Q.9
How many bits internet address is assigned to each host on a TCP/IP internet which is used in all communications with the host?
16 - bits
32 - bits
48 - bits
64 - bits
None of the above
Q.10
With an IP address of 100, you currently have 80 subnets. What subnet mask should you use to maximize the number of available hosts?
192
224
240
248
252
Q.11
Which of the following types of channels moves data relatively slowly?
wideband channel
voiceband channel
narrowband channel
broadband channel
None of the above
Q.12
Which of the following statements is correct for the use of packet switching?
the subdivision of information into individually addressed packets in conjunction with alternative routing arrangement enabled the transmission path to be altered in the event of congestion or individ
the employment of additional intelligence within the network enabled more sophisticated error control and link control procedures to be applied
by employing wide bandwidth circuits for the trunk networks substantial economies through extensive sharing of capacity could be achieved.
All of the above
None of the above
Q.13
A front-end processor is
a user computer system
a processor in a large-scale computer that executes operating system instructions
a minicomputer that relieves main-frame computers at a computer centre of communications control functions
preliminary processor of batch jobs.
None of the above
Q.14
What is the port number for NNTP?
119
80
79
70
None of the above
Q.15
Eight stations are competing for the use of a shared channel using the 'Adaptive tree Walk Protocol'. If the stations 7 and 8 are suddenly become ready at once, how many bit slots are needed to resolve the contention?
7 slots
5 slots
10 slots
14 slots
None of the above
Q.16
Usually, it takes 10-bits to represent one character. How many characters can be transmitted at a speed of 1200 BPS?
10
12
120
1200
None of the above
Q.17
The slowest transmission speeds are those of
twisted-pair wire
coaxial cable
fiber-optic cable
microwaves
Q.18
A noiseless 3 KHz Channel transmits bits with binary level signals. What is the maximum data rate?
3 Kbps
6 Kbps
12 Kbps
24 Kbps.
Q.19
Carrier is
One or more conductors that serve as a common connection for a related group of devices
a continuous frequency capable of being modulated or impressed with a second signal
the condition when two or more sections attempt to use the same channel at the same time
a collection of interconnected functional units that provides a data communications service among stations attached to the network
None of the above
Q.20
What can greatly reduce TCP/IP configuration problems?
WINS Server
WINS Proxy
DHCP Server
PDC
None of the above
Q.21
In CRC there is no error if the remainder at the receiver is _____.
equal to the remainder at the sender
zero
nonzero
the quotient at the sender
None of the above
Q.22
Distributed Queue Dual Bus is a standard for
LAN
MAN
WAN
Wireless LAN
LAN and MAN
Q.23
A teleprocessing system may consist of
user systems
communications systems
computer center systems
All of the above
None of the above
Q.24
If the ASCII character G is sent and the character D is received, what type of error is this?
single-bit
multiple-bit
burst
recoverable
None of the above
Q.25
Which layer of OSI determines the interface of the system with the user?
Network
Application
Data-link
Session
None of the above
Q.26
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.27
Which of the following divides the high speed signal into frequency bands?
t-switch
modem
frequency-division multiplexer
time-division multiplexer
None of the above
Q.28
Thorough planning must take place when setting up an 802.3 network. A maximum number of segments can separate any two nodes on the network. What is the maximum number of segments allowed between two nodes?
Five
Two
Four
Six
Three
Q.29
Which of the following conditions is used to transmit two packets over a medium at the same time?
Contention
Collision
Synchronous
Asynchronous
None of the above
Q.30
The slowest transmission speeds are those of
twisted-pair wire
coaxial cable
fiber-optic cable
microwaves
None of the above
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