Computer Networking
Which of the following are TCP/IP protocols used at the Application layer of the OSI model?1. IP2. TCP3. Telnet4. FTP5. TFTP

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

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Computer Networking
A front-end processor is

preliminary processor of batch jobs.
a processor in a large-scale computer that executes operating system instructions
None of these
a minicomputer that relieves main-frame computers at a computer centre of communications control functions
a user computer system

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