The probability that a single bit will be in error on a typical public telephone line using 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error rate for a communication line using 9-bit frames is approximately equal to

Computer Networking
The probability that a single bit will be in error on a typical public telephone line using 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error rate for a communication line using 9-bit frames is approximately equal to

0.991

0.009

None of these

0.999

0.003

0.991

0.009

None of these

0.999

0.003

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Computer Networking
To avoid transmission errors, a check figure is calculated by the

None of these

receiving computer

transmitting computer

both A and B

Start and stop bit

None of these

receiving computer

transmitting computer

both A and B

Start and stop bit

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Computer Networking
Which two statements describe the IP address 10.16.3.65/23?1. The subnet address is 10.16.3.0 255.255.254.0.2. The lowest host address in the subnet is 10.16.2.1 255.255.254.0.3. The last valid host address in the subnet is 10.16.2.254 255.255.254.0.4. The broadcast address of the subnet is 10.16.3.255 255.255.254.0.

2, 3 and 4

1, 2 and 4

2 and 5 only

2 and 4

1 and 3

2, 3 and 4

1, 2 and 4

2 and 5 only

2 and 4

1 and 3

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Computer Networking
Layer 2 switching provides which of the following?1. Hardware-based bridging (ASIC)2. Wire speed3. Low latency4. Low cost

1 and 3

1, 2 and 4

2 and 4

All of these

1 and 3

1, 2 and 4

2 and 4

All of these

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Computer Networking
Suppose that you have a customer who has a central HQ and six branch offices. They anticipate adding six more branches in the near future. They wish to implement a WAN technology that will allow the branches to economically connect to HQ and you have no free ports on the HQ router. Which of the following would you recommend?

HDLC

PPP

ISDN

Frame Relay

HDLC

PPP

ISDN

Frame Relay

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Computer Networking
How many digits of the DNIC (Data Network Identification Code) identify the country?

first six

first five

first four

first three

None of these

first six

first five

first four

first three

None of these

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Computer Networking

Computer Networking The probability that a single bit will be in error on a typical public telephone line using 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error rate for a communication line using 9-bit frames is approximately equal to

Computer Networking To avoid transmission errors, a check figure is calculated by the

Computer Networking Layer 2 switching provides which of the following?1. Hardware-based bridging (ASIC)2. Wire speed3. Low latency4. Low cost

Computer Networking How many digits of the DNIC (Data Network Identification Code) identify the country?

Computer Networking
The probability that a single bit will be in error on a typical public telephone line using 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error rate for a communication line using 9-bit frames is approximately equal to

Computer Networking
To avoid transmission errors, a check figure is calculated by the

Computer Networking
Layer 2 switching provides which of the following?1. Hardware-based bridging (ASIC)2. Wire speed3. Low latency4. Low cost

Computer Networking
How many digits of the DNIC (Data Network Identification Code) identify the country?