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Computer Networking

Computer Networking
Frames from one LAN can be transmitted to another LAN via the device

Repeater
Bridge
Router
Modem
None of these

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Computer Networking
When two computers communicate with each other, they send information back and forth. If they are separated by a reasonable distance, they can send and receive the information through a direct cable connection which is called a null-modem connection. Presently what is the maximum distance in metres permitted in this null-modem connection?

None of these
30
80
150
100

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Computer Networking
Many large organizations with their offices in different countries of the world connect their computers through telecommunication satellites and telephone lines. Such a communication network is called

WAN
None of these
EITHERNET
LAN
ECONET

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Computer Networking
In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?

During high-traffic periods
After broken links are reestablished
In an improperly implemented redundant topology
When upper-layer protocols require high reliability

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Computer Networking
Which of the following is considered a broadband communications channel?

microwave circuits
coaxial cable
satellites systems
fiber optic cable
All of these

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Computer Networking
The DoD model (also called the TCP/IP stack) has four layers. Which layer of the DoD model is equivalent to the Network layer of the OSI model?

Host-to-Host
Application
Internet
Network Access

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