Computer Networking
Communication circuits that transmit data in both directions but not at the same time are operating in

None of these
a full-duplex mode
an asynchronous mode
a simplex mode
a half-duplex mode

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Computer Networking
If you wanted to deny FTP access from network 200.200.10.0 to network 200.199.11.0 but allow everything else, which of the following command strings is valid?

access-list 100 deny tcp 200.200.10.0 0.0.0.255 200.199.11.0 0.0.0.255 eq ftp
access-list 110 deny 200.200.10.0 to network 200.199.11.0 eq ftpaccess-list 111 permit ip any 0.0.0.0 255.255.255.255
access-list 1 deny ftp 200.200.10.0 200.199.11.0 any any
access-list 198 deny tcp 200.200.10.0 0.0.0.255 200.199.11.0 0.0.0.255 eq ftpaccess-list 198 permit ip any 0.0.0.0 255.255.255.255

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Computer Networking
TCP is:

None of these
Operates at the Data Link layer
Connection orientated and unreliable
Connection orientated and reliable
Connectionless and unreliable

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