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Computer Networking

Computer Networking
The EIA-232 interface has _____ pins.

24
20
25
30
None of these

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Computer Networking
The Network topology that supports bi-directional links between each possible node is

Tree
Star
Mesh
Ring

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Computer Networking
A communications medium that uses pulses of laser light in glass fibers. Select the best fit for answer:

Cellular phone systems
Telecommunications software
Fiber optic cables
Telecommunications processors

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

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Computer Networking
Which of the following is a wrong example of network layer?

Internet Protocol (IP) - ARPANET
X.25 Packet Level Protocol (PLP)-ISO
X.25 level 2-ISO
Source routing and domain naming-USENet

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Computer Networking
How many digits of the Network User Address are known as the DNIC (Data Network Identification Code)?

first four
None of these
first three
first five
first seven

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