Questions regarding Computer Ports, Protocols, and their specifications.

 

50 multiple-choice questions regarding computer ports, protocols, and their specifications.

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Computer Ports & Protocols – MCQs

1. Which port is known as a communication endpoint in software?
A) Hardware Port
B) Software Port
C) USB Port
D) Parallel Port
Answer: B) Software Port

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2. What is the physical connector used to connect devices called?
A) Logical Port
B) Software Port
C) Hardware Port
D) Serial Port
Answer: C) Hardware Port

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3. What is the full range of software ports?
A) 0 to 1023
B) 0 to 65,535
C) 1 to 32,767
D) 1 to 65,536
Answer: B) 0 to 65,535

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4. Which port number is used by HTTP?
A) 21
B) 25
C) 80
D) 443
Answer: C) 80

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5. Which port number is used by HTTPS?
A) 80
B) 110
C) 143
D) 443
Answer: D) 443

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6. Which of the following is a hardware port?
A) Port 80
B) Port 443
C) HDMI
D) Port 25
Answer: C) HDMI

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7. What is the port number for SMTP?
A) 23
B) 25
C) 53
D) 110
Answer: B) 25

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8. Which port is used by POP3?
A) 25
B) 110
C) 143
D) 22
Answer: B) 110

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9. Which port number is assigned to DNS?
A) 21
B) 23
C) 53
D) 67
Answer: C) 53

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10. VGA is considered which type of port?
A) Digital
B) Logical
C) Analog
D) Software
Answer: C) Analog

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11. How many pins are in a standard VGA connector?
A) 9
B) 15
C) 25
D) 19
Answer: B) 15

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12. Which hardware port transfers both high-definition audio and video?
A) VGA
B) DVI
C) HDMI
D) Serial Port
Answer: C) HDMI

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13. What does USB stand for?
A) Unique Serial Bus
B) Universal System Bus
C) Universal Serial Bus
D) United Serial Bus
Answer: C) Universal Serial Bus

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14. Which connector is used for Ethernet?
A) RJ11
B) RJ45
C) USB-C
D) VGA
Answer: B) RJ45

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15. What is the port number for SSH?
A) 21
B) 22
C) 23
D) 25
Answer: B) 22

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16. Which protocol uses port 23?
A) SSH
B) SMTP
C) Telnet
D) FTP
Answer: C) Telnet

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17. Which USB version introduced Type-C?
A) USB 1.0
B) USB 2.0
C) USB 3.0
D) USB 3.1
Answer: D) USB 3.1

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18. In which year was USB Type-C introduced?
A) 1996
B) 2000
C) 2010
D) 2014
Answer: D) 2014

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19. What is the port number for IMAP?
A) 110
B) 143
C) 443
D) 80
Answer: B) 143

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20. FTP uses which ports?
A) 20 and 21
B) 22 and 23
C) 25 and 110
D) 80 and 443
Answer: A) 20 and 21

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21. Maximum speed of standard Ethernet?
A) 480 Mbps
B) 1 Gbps
C) 5 Gbps
D) 10 Gbps
Answer: B) 1 Gbps

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22. USB 3.0 SuperSpeed is?
A) 480 Mbps
B) 1 Gbps
C) 5 Gbps
D) 10 Gbps
Answer: C) 5 Gbps

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23. Who invented USB?
A) Tim Berners-Lee
B) Ajay Bhatt
C) Vint Cerf
D) Bill Gates
Answer: B) Ajay Bhatt

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24. First USB version launched in?
A) 1990
B) 1994
C) 1996
D) 1998
Answer: C) 1996

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25. Full form of DHCP is?
A) Dynamic Host Configuration Protocol
B) Digital Host Connection Protocol
C) Dynamic Hyperlink Connection Protocol
D) Digital Host Configuration Protocol
Answer: A) Dynamic Host Configuration Protocol

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26. DHCP Server uses which port?
A) 53
B) 67
C) 68
D) 69
Answer: B) 67

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27. DHCP Client uses which port?
A) 67
B) 68
C) 69
D) 80
Answer: B) 68

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28. TFTP uses which port?
A) 21
B) 25
C) 69
D) 110
Answer: C) 69

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29. Well-known ports range is?
A) 0–1023
B) 1024–49151
C) 49152–65535
D) 0–65535
Answer: A) 0–1023

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30. Dynamic ports range is?
A) 0–1023
B) 1024–49151
C) 49152–65535
D) 1–65535
Answer: C) 49152–65535

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31. Port used in older CRT monitors?
A) HDMI
B) USB-C
C) VGA
D) DisplayPort
Answer: C) VGA

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32. Which USB supports Ethernet over USB?
A) USB 1.0
B) USB 2.0
C) USB 3.0
D) USB-C
Answer: D) USB-C

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33. Loopback testing uses which port?
A) 127
B) 80
C) 443
D) No fixed port
Answer: D) No fixed port

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34. Maximum speed of USB 2.0?
A) 12 Mbps
B) 100 Mbps
C) 480 Mbps
D) 1 Gbps
Answer: C) 480 Mbps

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35. Which security protocol uses port 443?
A) SSH
B) SSL
C) Telnet
D) SMTP
Answer: B) SSL

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36. Which is NOT a software port?
A) Port 25
B) Port 110
C) HDMI
D) Port 80
Answer: C) HDMI

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37. Which port provides power and data?
A) VGA
B) USB
C) DVI
D) Serial
Answer: B) USB

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38. BIOS flashing is commonly done via?
A) HDMI
B) VGA
C) USB
D) Ethernet
Answer: C) USB

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39. Port 8080 is an alternative to?
A) 21
B) 25
C) 80
D) 443
Answer: C) 80

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40. Does Bluetooth require a fixed port?
A) Yes
B) No
C) Port 100
D) Port 50
Answer: B) No

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41. Bluetooth operates on which frequency?
A) 1.2 GHz
B) 2.4 GHz
C) 5 GHz
D) 60 GHz
Answer: B) 2.4 GHz

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42. DVI stands for?
A) Digital Video Interface
B) Digital Video Interconnect
C) Direct Video Interface
D) Digital Visual Instrument
Answer: A) Digital Video Interface

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43. Hot-plugging feature is supported by?
A) VGA
B) Serial Port
C) USB
D) Parallel Port
Answer: C) USB

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44. Which is NOT a video port?
A) VGA
B) HDMI
C) RJ45
D) DVI
Answer: C) RJ45

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45. SMTP is mainly used for?
A) Receiving emails
B) Downloading emails
C) Sending emails
D) Browsing
Answer: C) Sending emails

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46. VGA transmits which type of signal?
A) Digital only
B) Analog only
C) Both
D) Optical
Answer: B) Analog only

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47. DNS full form is?
A) Data Name System
B) Domain Name System
C) Digital Network System
D) Domain Network Service
Answer: B) Domain Name System

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48. Which connector has 8 pins?
A) VGA
B) USB-A
C) RJ45
D) HDMI
Answer: C) RJ45

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49. Which video port lacked audio and was replaced by HDMI?
A) USB-C
B) VGA
C) DVI
D) Serial
Answer: B) VGA

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50. Registered ports range is?
A) 0–1023
B) 1024–49151
C) 49152–65535
D) 0–65535
Answer: B) 1024–49151