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Computer Networking

Computer Networking
Which file transfer protocol uses UDP?

NFS
TFTP
FTP
TELNET
None of these

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Computer Networking
A network administrator wants to upgrade the IOS of a router without removing the image currently installed. What command will display the amount of memory consumed by the current IOS image and indicate whether there is enough room available to hold both the current and new images?

show flash
show version
show buffers
show memory

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Computer Networking
If a host on a network has the address 172.16.45.14/30, what is the subnetwork this host belongs to?

172.16.45.8
172.16.45.4
172.16.45.0
192.168.10.126
172.16.45.12

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Computer Networking
What command will permit SMTP mail to only 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
access-list 110 permit ip smtp host 1.1.1.1

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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.

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

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Computer Networking
What is Cladding?

A typical optical fiber consists of a very narrow
Coxial Cable
None of these
Cables with shield

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