Which of the following devices translates hostnames into IP addresses?
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Bb Bb from Baghdad, Iraq is saying DHCP Server is correct answer
Gayathry from Kochi, India is saying DNS Server is correct answer
Pavitter Chand from Shahjahanpur, India is saying DNS Server is correct answer
wajid hussain from Karachi, Pakistan is saying DNS Server is correct answer
- [A] Session Layer
- [B] Network layer
- [C] Transport layer
- [D] Data link layer
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
- [A] Unicast, Multicast
- [B] Malticast, Unicast
- [C] Broadcast, Unicast
- [D] None of Above
Which of the following terms is used to describe a hardware- or software-based device that protects networks from outside threats?
- [A] NIC
- [B] Gateway
- [C] Firewall
- [D] Hub