Computer Science - Networking

1.
Modem is used in data transmission. When was it invented and in which country?
1963, USA
1965, Germany
1950, USA
1950, Japan
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
Which of the following technique is used for Time-To-Line (TTL)?
a technique used in best-effort delivery system to avoid endlessly looping packets.
a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame
One of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size.
All of the above
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

3.
Communication network 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 with two or more stations 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
Answer: Option
Explanation:
No answer description is available. Let's discuss.

4.
Which of the following is an advantage to using fiber optics data transmission?
resistance to data theft
fast data transmission rate
low noise level
few transmission errors
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

5.
Which of the following statement is incorrect?
if a host moves from one network to another, its IP address must change
routing uses the network portion of the IP address, the path taken by packets travelling to a host with multiple IP addresses depends on the address used.
IP addresses encode both a network and a host on that network, they do not specify an individual machine, but a connection to a network.
All of the above
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.