Q #21. Which is the correct for MAC address –
a) MAC address is 32 bits
b) MAC address is 48 bits
c) MAC address is managed by IANA
d) MAC address can be changed
(b) MAC address is 48 bits.
Q #22. Which of the following devices is works on the Network layer of the OSI model –
a) Bridge
b) Router
c) Hub
d) Modem
(b) Router.
Q #23. The data unit of the Data Link layer is –
a) Packet
b) Bits
c) Data
d) Frame
(d) Frame.
Q #24. Which of the following protocol is works on the Application layer –
a) FTP
b) TCP
c) IP
d) MAC
(a) FTP (File Transfer Protocol).
Q #25. POP3 is used for –
a) File Upload services
b) Sending Mail Services
c) Receiving Mail Services
d) Web Services
(c) Receiving Mail Services.
Q #26. Which of the following protocol provides login access to a Router –
a) HTTP
b) TELNET
c) FTP
d) SMTP
(b) TELNET.
Q #27. Which of the following is an example of a MAC address –
a) Ab32:233:2445:AAV2
b) 192.168.0.54
c) Abbc:1482:vafgs:1452:1254
d) 80:1B:63:84:45:E6
(d) 80:1B:63:84:45:E6.
Q #28. SMTP stands for –
a) Simple Mail Transmission Protocol
b) Simple Mail Transfer Protocol
c) Secure Mail Transfer Protocol
d) None of the above
(b) Simple Mail Transfer Protocol.
Q #29. What is the port no. of SSH –
a) 22
b) 23
c) 80
d) 21
(a) 22.
Q #30. Which of the following is the data unit of the Network layer –
a) Frames
b) Segments
c) Packets
d) Bits
(c) Packets.