Question 1 of 25
Hints left: 3
Q1
If odd parity is used for ASCII error detection, the number of 0s per eight-bit symbol is _____.
Q4
With telecommunications and a personal computer you can
Q5
What does the acronym ISDN stand for?
Q6
What is the minimum number of wires required for sending data over a serial communications links?
Q7
How much power (roughly) a light-emitting diode can couple into an optical fiber?
Q8
Which of the following frequency ranges is used for AM radio transmission?
Q9
A modem that is attached to the telephone system by jamming the phone's handset into two flexible receptacles in the coupler?
Q10
A computer that handles resource sharing and network management in a local area network. Select the best fit for answer:
Q11
Which of the following services dynamically resolves NetBIOS-to-IP resolution?
Q12
Which command-line tool is included with every Microsoft TCP/IP client?
Q13
Videotex is a combination of
Q14
An error-detecting code inserted as a field in a block of data to be transmitted is known as
Q15
Which of the following statement is correct?
Q16
What does 224 translate to in binary?
Q17
To set up a bulletin board system you need
Q18
Working of the WAN generally involves
Q19
A devices that links two homogeneous packet-broadcast local networks, is
Q20
In cyclic redundancy checking, the divisor is _____ the CRC.
Q21
An example of a medium-speed, switched communications service is
Q22
Number of bits per symbol used in Baudot code is
Q23
Repeaters are often used on an 802.3 network to help strengthen the signals being transmitted. As with the length of segments and the number of segments, a limit exists as to how many repeaters can be used between any two nodes. What is the maximum number of repeaters that can be used?
Q25
A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. Differential PCM with 4 bit relative signal value is used. Then how many bits per second are actually sent?