Which of the following devices modulates digital signals into analog signals that can be sent over traditional telephone lines?

Which of the following services use TCP?

• [A] DHCP
• [B] SMTP
• [C] FTP
• [D] TFTP
• [E] HTTP

The method of communication in which transaction takes place in both directions,but only in one direction at a time, is called ?

• [A] Simplex
• [B] Four wire circuit
• [C] Full duplex
• [D] Half-duplex

protocols are?

• [A] Agreements on how communication components and DTE's are to communicate
• [B] Logical communication channels for transferring data
• [C] Physical communication channels sued for transferring data
• [D] None of above

Which router command allows you to view the entire contents of all access lists?

• [A] show all access-lists
• [B] show access-lists
• [C] show ip interface
• [D] show interface

The topology with highest reliability is ?

• [A] Bus topology
• [B] Star topology
• [C] Ring Topology
• [D] Mesh Topology