WorksheetsComputer Network
Total questions: 11
Worksheet time: 6mins
The data link layer takes the packets from _________ and encapsulates them into frames for transmission.
a) network layer
b) physical layer
c) transport layer
d) application layer
Which of the following tasks is not done by data link layer?
a) framing
b) error control
c) flow control
d) channel coding
The network topology that supports bi-directional links between each possible node is ?
ring
star
tree
mesh
In a broad sense, a railway track is an example of
simplex
half duplex
full duplex
all of the above
If the data rate of ring is 20 Mbps, signal propagation speed is 200 m/micro second, then the number of bits that can be placed on the channel of 200 km is
2000 bits
20000 bits
1000 bits
none of the above
End-to-end connectivity is provided from host-to-host in
the network layer
the transport layer
the session layer
it is a combined functionality of the network and the data link layer.
Which of the following connectivity devices is used to extend a network on a purely mechanical basis?
Active hub
Gateway
Router
Switch
The physical layer is responsible for
line coding
channel coding
modulation
all of the mentioned
Bit length can be defined in terms of
high and low frequency
Propagation Speed
Bit duration
both b and c
he common name for a modulator-demodulator is
A. Modem
B. Joiner
C. Networker
D. Connector
In the IPv4 addressing format, the number of networks allowed under Class C addresses is
2^14
2^7
2^21
2^24
