Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?

Computer Networking
Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?

Interface

Teleprocessor

Attenuation

Modem

None of these

Interface

Teleprocessor

Attenuation

Modem

None of these

ANSWER DOWNLOAD EXAMIANS APP

Computer Networking
A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?

Decrease the window size.

Send a different source port number.

Decrease the sequence number.

Restart the virtual circuit.

Decrease the window size.

Send a different source port number.

Decrease the sequence number.

Restart the virtual circuit.

ANSWER DOWNLOAD EXAMIANS APP

Computer Networking
The packets switching concept was first proposed

in the late 1950s for Defense Ministry of US

All of these

in the late 1980s for the Defense Ministry of US.

in the early 1960s for military communication systems, mainly to handle speech

None of these

in the late 1950s for Defense Ministry of US

All of these

in the late 1980s for the Defense Ministry of US.

in the early 1960s for military communication systems, mainly to handle speech

None of these

ANSWER DOWNLOAD EXAMIANS APP

Computer Networking
After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?

Telex

Facsimile

Word processor

None of these

Electronic mail

Telex

Facsimile

Word processor

None of these

Electronic mail

ANSWER DOWNLOAD EXAMIANS APP

Computer Networking
What is the frequency range of the IEEE 802.11a standard?

5Gbps

5GHz

2.4GHz

2.4Gbps

5Gbps

5GHz

2.4GHz

2.4Gbps

ANSWER DOWNLOAD EXAMIANS APP

Computer Networking
Which type of OSPF network will elect a backup designated router?1. Broadcast multi-access2. Non-broadcast multi-access3. Point-to-point4. Broadcast multipoint

None of these

3 and 4

3 only

1 and 2

None of these

3 and 4

3 only

1 and 2

ANSWER DOWNLOAD EXAMIANS APP

Computer Networking

Computer Networking A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?

Computer Networking The packets switching concept was first proposed

Computer Networking After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?

Computer Networking What is the frequency range of the IEEE 802.11a standard?

Computer Networking Which type of OSPF network will elect a backup designated router?1. Broadcast multi-access2. Non-broadcast multi-access3. Point-to-point4. Broadcast multipoint

Computer Networking
A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?

Computer Networking
The packets switching concept was first proposed

Computer Networking
After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?

Computer Networking
What is the frequency range of the IEEE 802.11a standard?

Computer Networking
Which type of OSPF network will elect a backup designated router?1. Broadcast multi-access2. Non-broadcast multi-access3. Point-to-point4. Broadcast multipoint