Protocols — Set 1
Computers · प्रोटोकॉल · Questions 1–10 of 70
Which protocol is primarily used for transferring files between a client and a server on a computer network?
Correct Answer: D. FTP
FTP stands for File Transfer Protocol and is designed specifically for moving files between systems. It typically uses two different ports for data and control commands. Many modern browsers still support basic FTP functionality for downloads.
Which protocol provides a secure, encrypted connection for web browsing?
Correct Answer: D. HTTPS
HTTPS is the secure version of HTTP and uses SSL/TLS for encryption. It protects sensitive data like passwords and credit card numbers during transit. Websites with HTTPS are verified by digital certificates issued by trusted authorities.
In the TCP/IP model, which protocol is responsible for logical addressing and routing packets across different networks?
Correct Answer: D. IP
IP or Internet Protocol handles the addressing system that identifies every device on a network. It ensures that packets find the correct path from source to destination across multiple routers. There are currently two major versions in use: IPv4 and IPv6.
Which protocol is used by email clients to send messages to a mail server?
Correct Answer: A. SMTP
SMTP stands for Simple Mail Transfer Protocol and is used for outgoing mail delivery. While POP3 and IMAP are for receiving mail, SMTP handles the transmission between servers. It is a text-based protocol that operates on port 25 by default.
Which networking protocol automatically assigns IP addresses to devices on a network?
Correct Answer: D. DHCP
DHCP or Dynamic Host Configuration Protocol eliminates the need for manual IP configuration. It manages a pool of addresses and leases them to devices for a specific duration. This allows for efficient management of network resources in large organizations.
Which protocol is used to translate human-readable domain names into machine-readable IP addresses?
Correct Answer: D. DNS
DNS acts like the phonebook of the internet by mapping names like example.com to IP numbers. Without DNS, users would have to memorize complex numerical strings to visit websites. The system is hierarchical and distributed across thousands of servers worldwide.
Which protocol operates at the Transport Layer and provides reliable, connection-oriented data delivery?
Correct Answer: D. TCP
TCP ensures that all data packets arrive in the correct order and without errors. It uses a three-way handshake mechanism to establish a stable connection before data transfer. If a packet is lost, TCP automatically requests a retransmission.
Which protocol is used for remote terminal connection, allowing a user to log into another computer on the same network securely?
Correct Answer: A. SSH
SSH or Secure Shell replaced the older Telnet protocol because it encrypts all communication. It provides a secure channel over an unsecured network in a client-server architecture. It is widely used by system administrators to manage servers remotely.
Which protocol is used to find the hardware (MAC) address of a device when its IP address is known?
Correct Answer: D. ARP
ARP or Address Resolution Protocol maps a network layer address to a data link layer address. It broadcasts a request on the local network to find the specific device owning the IP. Devices maintain an ARP cache to speed up subsequent communications.
Which protocol is used by network devices to send error messages and operational information?
Correct Answer: D. ICMP
ICMP is most commonly known for its role in the 'ping' command to test network connectivity. It reports errors such as 'Destination Unreachable' back to the source device. It is an integral part of the Internet Protocol suite but does not carry user data.