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Computer Networking

Computer Networking
The number of cross point needed for 10 lines in a cross point switch which is full duplex in nature and there are no self connection is

50
100
45
90

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Computer Networking
You have a class A network address 10.0.0.0 with 40 subnets, but are required to add 60 new subnets very soon. You would like to still allow for the largest possible number of host IDs per subnet. Which subnet mask should you assign?

255.248.0.0
255.252.0.0
255.240.0.0
255.255.255.255
255.254.0.0

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Computer Networking
Which of the following communications service provides message preparation and transmission facilities?

None of these
Teletext
Fax
Teletex
x400

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Computer Networking
What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?

Crossover cable
Straight-through
Rolled
Crossover with a CSU/DSU

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Computer Networking
Usually, it takes 10-bits to represent one character. How many characters can be transmitted at a speed of 1200 BPS?

None of these
1200
120
10
12

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Computer Networking
What frequency range is used for microwave communications, satellite and radar?

Low Frequency : 30 kHz to 300 kHz
None of these
Super High Frequency : 3000 MHz to 30000 MHz
Extremely High Frequency :30,000 MHz
Medium Frequency : 300 kHz to 3 MHz

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