What does OSI stands for?
If a physical link is down which is the highest layers is to check this issue?
You are IT support engineer, your IT manger wants you to Telnet R7 which is in LA, Which is the highest layer used to get access to LA’s router from Telnet?
What does UDP provide in OSI model?
DCCP is a protocol of layer?
PPP is a protocol of layer?
Which protocol used to be first established the connection before any data is transmitted?
Network Layer is in OSI’s:
What is the purpose of Presentation Layer?
How many standard layers are in OSI model?
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