Protocols — Set 2
Computers · प्रोटोकॉल · Questions 11–20 of 70
Which protocol is used by email clients to retrieve messages from a server and typically deletes them from the server after downloading?
Correct Answer: D. POP3
POP3 stands for Post Office Protocol version 3 and is designed for offline mail processing. It is less suitable than IMAP for users who access their mail from multiple different devices. Modern implementations often have an option to leave a copy on the server.
Which connectionless protocol is used for applications where speed is more important than reliability, such as video streaming?
Correct Answer: A. UDP
UDP or User Datagram Protocol does not perform error checking or sequencing, making it very fast. It is ideal for real-time applications like VoIP and online gaming where small data losses are acceptable. Unlike TCP, it does not require a formal connection setup.
Which protocol is used to manage and monitor network devices like routers and switches?
Correct Answer: D. SNMP
SNMP stands for Simple Network Management Protocol and collects data about device status. It allows administrators to configure devices and receive alerts about hardware failures. It uses 'agents' installed on devices to communicate with a central management station.
Which protocol allows multiple email clients to stay synchronized with a single mail server?
Correct Answer: D. IMAP
IMAP or Internet Message Access Protocol stores messages on the server rather than the local device. This allows users to see the same folders and read/unread status across their phone and computer. It is generally preferred over POP3 in the modern era of multiple devices.
Which protocol is used for the transmission of hypermedia documents, such as HTML, on the World Wide Web?
Correct Answer: A. HTTP
HTTP is the foundation of data communication for the web and defines how messages are formatted. It is a stateless protocol, meaning each request is independent of previous ones. Modern web browsers use HTTP/2 or HTTP/3 for better performance.
Which protocol is specifically used to retrieve the IP address of a host from its physical address?
Correct Answer: D. RARP
RARP or Reverse Address Resolution Protocol was used by diskless workstations to find their IP on startup. It has largely been replaced by more modern protocols like BOOTP and DHCP. It functions as the exact logical opposite of the standard ARP protocol.
Which protocol is considered the main routing protocol used to exchange routing information between different autonomous systems on the internet?
Correct Answer: D. BGP
BGP or Border Gateway Protocol is often called the 'glue' that holds the internet together. it makes routing decisions based on paths and network policies set by administrators. It is classified as an exterior gateway protocol unlike RIP or OSPF.
Which protocol provides a set of rules for the secure exchange of information between a server and a client using digital certificates?
Correct Answer: A. SSL
SSL or Secure Sockets Layer provides the security backbone for HTTPS web traffic. While it has been largely succeeded by TLS, the term SSL is still commonly used. It ensures that data remains private and integral during transmission.
Which protocol is used in a local area network to allow a computer to join a multicast group?
Correct Answer: A. IGMP
IGMP or Internet Group Management Protocol allows routers to identify which devices belong to specific multicast groups. This is essential for efficient one-to-many communication like IPTV or multiparty gaming. It operates between a host and its local multicast router.
Which of the following protocols is an older, non-secure method for remote access that transmits data in plain text?
Correct Answer: D. TELNET
Telnet was widely used in the early days of networking but is now discouraged due to security risks. Since it does not encrypt data, anyone capturing the traffic can see usernames and passwords. SSH is the modern and secure alternative for the same purpose.