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Computer Networking

Computer Networking
How many non-overlapping channels are available with 802.11g?

12
40
3
23

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Computer Networking
What are the two main types of access control lists (ACLs)?1. Standard2. IEEE3. Extended4. Specialized

3 and 4
1 and 2
2 and 4
1 and 3

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Computer Networking
Which of the following are unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?1. Half-duplex Ethernet operates in a shared collision domain.2. Half-duplex Ethernet operates in a private collision domain.3. Half-duplex Ethernet has higher effective throughput.4. Half-duplex Ethernet has lower effective throughput.

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

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Computer Networking
Which of the following encapsulates PPP frames in Ethernet frames and uses common PPP features like authentication, encryption, and compression?

PPPoA
Token Ring
PPP
PPPoE

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Computer Networking
The OCR reading unit attached to a POS terminal is called a

All of these
None of these
cursor
light pen
wand

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Computer Networking
Which WAN encapsulations can be configured on an asynchronous serial connection?1. PPP2. ATM3. HDLC4. SDLC5. Frame Relay

3, 4 and 5
1 and 2
All of these
2 and 4

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