Question 1 of 25
Hints left: 3
Q1
In OSI model, which of the following layer transforms information from machine format into that understandable by user
Q2
A modem is connected in between a telephone line and a
Q3
The data-link layer, in reference to the OSI model, specifies
Q4
Which of the following statements is correct?
Q5
What is the name given to the exchange of control signals which is necessary for establishing a connection between a modem and a computer at one end of a line and another modem and computer at the other end?
Q6
Telecommunications networks come in a wide range of speed and capacity capabilities. Select the best fit for answer:
Q7
When a host knows its physical address but not its IP address, it can use _____.
Q8
Which utility is useful for troubleshooting NetBIOS name resolution problems?
Q9
Different computers are connected to a LAN by a cable and a/an
Q10
Which of the following is a wrong example of network layer:
Q11
After you have verified that TCP/IP is installed correctly, what is the next step in verifying the TCP/IP configuration?
Q12
We can receive data either through our television aerial or down our telephone lines and display this data on our television screen. What is the general name given to this process?
Q13
ASK, PSK, FSK, and QAM are examples of _____ encoding.
Q14
A characteristic of a multiprogramming system is:
Q15
Which of the following is an important characteristic of LAN?
Q16
Which of the following statement is correct?
Q17
The EIA-232 interface has _____ pins.
Q18
You need to determine whether IP information has been assigned to your Windows NT. Which utility should you use?
Q19
What function does a serial interface perform in data communication?
Q20
A 2000-character text file has to be transmitted by using a 1,200 baud modem. Can you tell how long will it take?
Q21
Which of the following might be used by a company to satisfy its growing communications needs?
Q22
The Token-Ring architecture was developed for a more efficient way to determine who should be transmitting at any one time. With Ethernet, collisions may take place, causing the transmitting computers to have to retransmit their data. The use of token guarantees that only one computer can transmit at a time. What happens as the network increases in size? Choose the best answer
Q23
A communications medium that uses pulses of laser light in glass fibers. Select the best fit for answer:
Q24
The channel in the data communication model can be
Q25
What frequency range is used for TV transmission and low power microwave applications?