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Computer Networking

Computer Networking
With an IP address of 100, you currently have 80 subnets. What subnet mask should you use to maximize the number of available hosts?

248
240
224
192
252

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Computer Networking
Which of the following are true regarding OSPF areas?1. You must have separate loopback interfaces configured in each area.2. The numbers you can assign an area go up to 65,535.3. The backbone area is also called area 0.4. If your design is hierarchical, then you don't need multiple areas.5. All areas must connect to area 0.

1 and 2 only
3 and 4 only
1 only
3, 4 and 5

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Computer Networking
Which class of IP address has the most host addresses available by default?

A and B
C
A
B

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Computer Networking
A smart modem can dial, hang up and answer incoming calls automatically. Can you tell who provides the appropriate instruction to the modem for this purpose?

Telecommunications
None of these
Link access procedure (LAP)
Communications software
Error detecting protocols

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Computer Networking
Which of the following network types have a designated router and a backup designated router assigned? 1. Broadcast 2. Point-to-point 3. NBMA 4. NBMA point-to-point

1, 2 and 3
3 and 4
1 and 3
All of these

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Computer Networking
What is the default subnet mask for a class A network?

None of these
255.255.255.0.0
127.0.0.1
255.0.0.0
255.255.255.0

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