COMPUTER NETWORKING QUIZ

Which of the following ISO level is more closely related to the physical communications facilities?

Session

Application

Data Link

Networking

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How often are BPDUs sent from a layer 2 device?

Every 2 seconds

Every 10 minutes

Every 30 seconds

Never

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What is the minimum number of wires needed to send data over a serial communication link layer?

1

2

6

4

None of these

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How many pairs of stations can simultaneously communicate on Ethernet LAN?

multiple

None of these

2

3

1

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

1 and 2

3 only

3 and 4

None of these

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What is the port number for POP3?

80

90

110

49

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The term 'duplex' refers to the ability of the data receiving stations to echo back a confirming message to the sender. In full duplex data transmission, both the sender and the receiver

cannot talk at once

can do one way data transmission only

can send or receive data one at a time

can receive and send data simultaneously

None of these

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Which of the following layer protocols are responsible for user and the application programme support such as passwords, resource sharing, file transfer and network management?

Layer 5 protocols

Layer 7 protocols

Layer 6 protocols

Layer 4 protocols

None of these

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What can greatly reduce TCP/IP configuration problems?

None of these

WINS Proxy

PDC

WINS Server

DHCP Server

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What is Cladding?

Coxial Cable

None of these

Cables with shield

A typical optical fiber consists of a very narrow

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