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Computer Networking

Computer Networking
Which of the following describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols?

IPSec
xDSL
VPN
Cable
HDLC

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Computer Networking
What protocol is used to find the hardware address of a local device?

RARP
IP
ICMP
ARP

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Computer Networking
A remote batch-processing operation in which data is solely input to a central computer would require a:

None of these
All listed here
simplex lines
mixedband channel
telegraph line

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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?

Token Ring
PPPoE
PPPoA
PPP

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Computer Networking
You have a network with a subnet of 172.16.17.0/22. Which is the valid host address?

172.16.0.1 255.255.240.0
172.16.20.1 255.255.254.0
172.16.17.1 255.255.255.252
172.16.18.255 255.255.252.0

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

12
40
3
23

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