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WorksheetsNWC203 1-20
Total questions: 20
Worksheet time: 11mins
Which of the following networks use store-and-forward switching operation?
Computer networks
Telegraph networks
Telephone networks
Wireless Networks
There are similarities between message switching and packet switching. Which of following that applies to packet switching but not to message switching?
Variable length of information block
Supporting multiple applications
Store-and-forward
All of the above
Which of the following networks can be connection-oriented?
Telegraph networks
Computer networks
Telephone networks
All of the above
A protocol is a set of precise and unambiguous rules that governs
How two or more communicating entities in a layer are to interact
Messages that can be sent and received
Actions that are to be taken when a certain event occurs
All of the above
DNS is a domain-name-service that responds to queries of domain name to IP address or IP address to domain name. DNS uses services provided by
TCP
UDP
HTTP
None of the above
A network used to join the individual networks at different sites into one extended network is called
PAN
LAN
SAN
VPN
Upon receipt of a bad segment, UDP?
It does flow control
It does not do flow and error control
It does error control
Retransmission
Which of following protocol is HTTP built upon?
IP
TCP
UDP
SMTP
Which of following requirements are necessary for packet networks to support multiple and diverse applications?
Transfer arbitrary message size
Low delay for interactive applications
Packets have maximum length
All of the above
What was the concern of the telephone system that motivated the ARPANET design?
Scalability
Vulnerability
Efficiency
None of the above
Which of the following is an application layer protocol?
HTTP
UDP
DNS
TCP
Which of the following are features of ARPANET design?
Connectionless packet transmission
Routing tables at the packet switches
Destinations identified by unique addresses
All of the above
Bluetooth is an example of
Local Area Network
Wide Area Network
Metropolitan Area Network
Personal Area Network
In the layer hierarchy as the data packet moves from the upper to the lower layers, headers are
Removed
Modified
Added
Rearranged
The ________ is the physical path over which a message travels
Protocol
Route
Medium
Path
Three or more devices share a link in ________ connection
Unipoint
Multipoint
Point to Point
None of the above
Which of the following is true for Transport Control Protocol
Connection oriented
Process to Process
Transport layer protocol
Connectionless
Which OSI layer is responsible for providing end-to-end communication with reliable service?
Transport layer
Network layer
Session layer
Data link layer
Which OSI layer is responsible for dividing the transmitted bit stream into frames?
Network layer
Transport layer
Application layer
Data link layer
Which OSI layer is responsible for determining which route through the network to use?
Network layer
Data link layer
Transport layer
None of the above
