The Acme Corporation is implementing dial-up services to enable remote-office employees to connect to the local network. The company uses multiple routed protocols, needs authentication of users connecting to the network, and since some calls will be long distance, needs callback support. Which of the following protocols is the best choice for these remote services?

Computer Networking
The Acme Corporation is implementing dial-up services to enable remote-office employees to connect to the local network. The company uses multiple routed protocols, needs authentication of users connecting to the network, and since some calls will be long distance, needs callback support. Which of the following protocols is the best choice for these remote services?

HDLC

Frame Relay

PAP

802.1

PPP

HDLC

Frame Relay

PAP

802.1

PPP

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Computer Networking
A 6-MHz channel is used by a digital signaling system utilizing 4-level signals. What is the maximum possible transmission rate?

None of these

12 Mbaud/sec

6 Mband/sec

1.5 Mbaud/sec

24 Mbaud/sec

None of these

12 Mbaud/sec

6 Mband/sec

1.5 Mbaud/sec

24 Mbaud/sec

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Computer Networking
An internetworking protocol that provides virtual circuit service across multiple X.25 protocol, is

X.25

X.21

X.400

X.75

None of these

X.25

X.21

X.400

X.75

None of these

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Computer Networking
What is the name of the software package that allows people to send electronic mail along a network of computers and workstations?

Memory resident package

None of these

Project management package

Electronic mail package

Data communication package

Memory resident package

None of these

Project management package

Electronic mail package

Data communication package

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Computer Networking
Bus is

the condition when two or more stations attempt to use the same channel at the same time

one or more conductors that some as a common connection for a related group of devices

a continuous frequency capable of being modulated or impressed with a second signal

None of these

a collection of interconnected functional units that provides a data communications service among stations attached to the network

the condition when two or more stations attempt to use the same channel at the same time

one or more conductors that some as a common connection for a related group of devices

a continuous frequency capable of being modulated or impressed with a second signal

None of these

a collection of interconnected functional units that provides a data communications service among stations attached to the network

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Computer Networking
The core diameter of a single-mode fibers is about

10 times the wavelength of the light carried in the fiber

None of these

3 times the wavelength of the light carried in the fiber

7 times the light carried in the fiber

10 times the fiber radius

10 times the wavelength of the light carried in the fiber

None of these

3 times the wavelength of the light carried in the fiber

7 times the light carried in the fiber

10 times the fiber radius

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Computer Networking

Computer Networking A 6-MHz channel is used by a digital signaling system utilizing 4-level signals. What is the maximum possible transmission rate?

Computer Networking An internetworking protocol that provides virtual circuit service across multiple X.25 protocol, is

Computer Networking What is the name of the software package that allows people to send electronic mail along a network of computers and workstations?

Computer Networking Bus is

Computer Networking The core diameter of a single-mode fibers is about

Computer Networking
A 6-MHz channel is used by a digital signaling system utilizing 4-level signals. What is the maximum possible transmission rate?

Computer Networking
An internetworking protocol that provides virtual circuit service across multiple X.25 protocol, is

Computer Networking
What is the name of the software package that allows people to send electronic mail along a network of computers and workstations?

Computer Networking
Bus is

Computer Networking
The core diameter of a single-mode fibers is about