Protocols — Set 6
Computers · प्रोटोकॉल · Questions 51–60 of 70
What does the 'P' in the abbreviation 'IP' stand for in computer networking?
Correct Answer: B. Protocol
IP stands for Internet Protocol, which is the core protocol of the entire internet. It defines the format of packets and the addressing scheme used to route data. It operates at the network layer of the OSI model.
Which protocol is used to send an email message from one server to another?
Correct Answer: C. SMTP
SMTP is the standard protocol for mail transfer across the internet. It works as a 'push' protocol to move mail from the sender's server to the recipient's server. To read the mail, the recipient uses protocols like POP3 or IMAP.
The 'HTTP' protocol works on which default port number?
Correct Answer: C. 80
Port 80 is the standard port for unencrypted web traffic using HTTP. For encrypted traffic (HTTPS), port 443 is used instead. Port 21 is for FTP and port 25 is for SMTP.
Which protocol is referred to as 'connectionless' because it does not verify if data was received?
Correct Answer: B. UDP
UDP or User Datagram Protocol just 'fires and forgets' packets toward a destination. This lack of overhead makes it very fast and efficient for streaming. If a packet is lost, UDP does not try to send it again.
What is the primary function of the 'FTP' protocol?
Correct Answer: B. Transferring files
FTP or File Transfer Protocol is used to upload and download files to a server. It was one of the earliest protocols developed for the internet. It remains popular for large bulk data transfers between businesses.
Which protocol is used to convert 'google.com' into an IP address like '142.250.190.46'?
Correct Answer: C. DNS
DNS or Domain Name System acts as the internet's translator. It allows humans to use easy-to-remember names while computers use numbers. This system is essential for the usability of the World Wide Web.
Which protocol is used for secure remote login to a computer via a command line?
Correct Answer: B. SSH
SSH or Secure Shell is the industry standard for logging into remote servers. It encrypts the entire session, protecting the password from being stolen. It is the secure replacement for the older Telnet protocol.
Which protocol is used to fetch email and sync folders across multiple devices like a phone and a laptop?
Correct Answer: B. IMAP
IMAP keeps all emails on the server, which allows for perfect synchronization between devices. If you delete an email on your phone, it is also deleted on your laptop. This is the most popular way to read email today.
What does 'HTTPS' stand for in the context of web security?
Correct Answer: A. HyperText Transfer Protocol Secure
HTTPS is the encrypted version of the basic HTTP protocol. It ensures that data sent between your browser and the website is private. Almost all modern websites use HTTPS to protect user data.
Which of the following is a protocol used to find a MAC address from an IP address?
Correct Answer: C. ARP
ARP or Address Resolution Protocol is used by computers on a local network to talk to each other. Every device maintains an ARP table to remember which hardware belongs to which IP. It is a critical part of how local networks function.