Questions and Answers on Networking
zzz1. The Physical Layer of the OSI model is responsible for:
a) establishing, maintaining and terminating connections across the intervening network
b) reliable transfer of information across the physical link
c) data units are delivered error free, in sequence, with no losses or duplications
d) all of the above
e) none of the above
2. An example of an application layer protocol is
a) HTTP c) UDP e) None of the above
b) HDLC d) TCP
3.Techniques for transmitting a digital signal over an analogue medium include:
a) Frequency c) Amplitude e) None of the above
b) Phase d) All of the above
4.A paradigm for electronic communications where a message is broken up into blocks of data of limited size which are then transmitted one by one across the network is called:
a) message switching c) packet switching e) analog switching
b) circuit switching d) data switching
5. Which of the following describes class A networks?
a) Many networks, each with a few hosts
b) Medium number of networks, each with a medium number of hosts
c) Few networks, each with many hosts
d) A dedicated network, with a set number of hosts
e) A network dedicated to multicast applications
6. The fact that signal strength falls off with distance is called
a) bandwidth c) resistance e) amplification.
b) attenuation d) propagation.
7. The following figure represents a binary string encoded using NRZI. What is the appropriate binary representation?.
a) 0011 c) 1100 e) 1010
b) 0101111 d) 101000
8. Which of the following is a way that frequency spectrum can be divided among active users?
a) frequency division multiple access
b) time division multiple access
c) code division multiple access
d) all of the above
e) none of the above
9. Crosstalk can be defined as:
a) signal produced on a line that is the sum or difference of the signals that created it
b) irregular pulses or spikes of high amplitude caused by external sources
c) unwanted coupling between signal
a) establishing, maintaining and terminating connections across the intervening network
b) reliable transfer of information across the physical link
c) data units are delivered error free, in sequence, with no losses or duplications
d) all of the above
e) none of the above
2. An example of an application layer protocol is
a) HTTP c) UDP e) None of the above
b) HDLC d) TCP
3.Techniques for transmitting a digital signal over an analogue medium include:
a) Frequency c) Amplitude e) None of the above
b) Phase d) All of the above
4.A paradigm for electronic communications where a message is broken up into blocks of data of limited size which are then transmitted one by one across the network is called:
a) message switching c) packet switching e) analog switching
b) circuit switching d) data switching
5. Which of the following describes class A networks?
a) Many networks, each with a few hosts
b) Medium number of networks, each with a medium number of hosts
c) Few networks, each with many hosts
d) A dedicated network, with a set number of hosts
e) A network dedicated to multicast applications
6. The fact that signal strength falls off with distance is called
a) bandwidth c) resistance e) amplification.
b) attenuation d) propagation.
7. The following figure represents a binary string encoded using NRZI. What is the appropriate binary representation?.
a) 0011 c) 1100 e) 1010
b) 0101111 d) 101000
8. Which of the following is a way that frequency spectrum can be divided among active users?
a) frequency division multiple access
b) time division multiple access
c) code division multiple access
d) all of the above
e) none of the above
9. Crosstalk can be defined as:
a) signal produced on a line that is the sum or difference of the signals that created it
b) irregular pulses or spikes of high amplitude caused by external sources
c) unwanted coupling between signal