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WorksheetsCS8591-Computer Networks
Total questions: 45
Worksheet time: 45mins
Which of these is a standard interface for serial data transmission?
ASCII
RS232C
2
Centronics
Which type of topology is best suited for large business which must carefully control & coordinate the operation of distributed branch outlets?
Ring
Tree
Mesh
Star
Which of the following transmission directions listed is not a legitimate channel?
simplex
half duplex
full duplex
double duplex
parity bits are used for
encryption of data
To transmit faster
to detect errors
to identify the users
What kind of transmission medium is most suitable to carry data in a computer network that is exposed to electrical interference?
unshielded twisted pair
optical fiber
coaxial cable
microwave
A collection of hyperlinked documents on the internet forms?
WWW
Mailing list
HTML
The location of resource on the internet is given by its
protocol
URL
ICQ
The term HTTP stands for?
Hyper terminal tracing program
Hypertext tracing protocol
Hypertext transfer program
Hypertext transfer protocol
Which one of the following would breach the integrity of a system?
Looking the room to prevent theft
Full access rights for all users
Fitting the system with an anti-theft device
Protecting the device against willful or accidental damage
Which software prevents the external access to a system?
Firewall
Gateway
Router
Virus checker
Which one of the following is the most common internet protocol?
HTML
NetBEUI
TCP/IP
IPX/SPX
----------------is a connectionless Protocol
TCP
UDP
Ø ---------- policies are applied to prevent congestion before it happens .
Closed loop congestion control policies
Open loop congestion control policies
implicit Signalling
Explicit Signalling
The functionalities of the presentation layer include ____________
Data compression
Data Encryption
Data decryption
All of the mentioned
Delimiting and synchronization of data exchange is provided by __________
Application Layer
Session Layer
Physical Layer
None of the above
In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______
Added
Removed
Rearranged
Randomized
Which of the following transmission media provides the highest transmission speed in a network?
Co axial Cable
Twisted Pair Cable
Fiber Optics
Cable
What is the size of an IP address in IPV4?
128 bit
32 bit
512 bit
64 bit
MAC addresses are also known as?
Hardware Address
Physical Address
IP Address
Both a and b
UDP is an unreliable protocol.
True
False
Which of the IP headers decides when the packet should be
discarded?
Checksum
Header
CRC
TTL
Which of the following is the multiple access protocol for channel access control?
CSMA/CD
CSMA/CA
Both of the Above
HDLC
The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called ____________
Piggybacking
Parity Check
Checksum
None of the above
"A number of devices that communicate with each other without the need of the internet"
Two fundamental VPN technologies are
Security
Encryption
Internet
Tunnelling
Select the functions of protocols
Translate into machine code
Prevent deadlock
Check the speed of data transmission
Manage flow control
The IP network 192.168.50.0 is to be divided into 10 equal sized subnets. Which of the following subnet masks can be used for the above requirement?
255.243.240 .0
255.255.0.0
255.255.0
255.255.255
