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Computer Networking

Computer Networking
00 represents a pixel that pixel is known as :

White pixel
Black pixel
Light gray
Dark gray pixel

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Computer Networking
Select the wrong data communication system component:

Receiver
Transits
Protocol
Medium

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Computer Networking
When a router is connected to a Frame Relay WAN link using a serial DTE interface, how is the clock rate determined?

By the Physical layer bit stream timing
Supplied by the CSU/DSU
By the clock rate command
By the far end router

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

12
40
3
23

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Computer Networking
The network address of 172.16.0.0/19 provides how many subnets and hosts?

8 subnets, 2,046 hosts each
7 subnets, 2,046 hosts each
8 subnets, 8,190 hosts each
7 subnets, 30 hosts each

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Computer Networking
What command will permit SMTP mail to only host 1.1.1.1?

access-list 110 permit ip smtp host 1.1.1.1
access-list 110 permit tcp any host 1.1.1.1 eq smtp
access-list 10 permit tcp any host 1.1.1.1 eq smtp
access-list 10 permit smtp host 1.1.1.1

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