Protocols — Set 7
Computers · प्रोटोकॉल · Questions 61–70 of 70
The 'TCP' protocol provides which type of data delivery?
Correct Answer: B. Reliable and connection-oriented
TCP or Transmission Control Protocol checks if every packet arrived correctly. If data is missing, it asks for a re-send until everything is complete. It is the most used protocol for web browsing and file downloads.
Which port number is typically used by the 'HTTPS' protocol?
Correct Answer: C. 443
Port 443 is the standard port for secure web traffic (HTTPS). Port 80 is used for unsecure web traffic (HTTP). Assigning specific ports helps the server understand what type of service the client is requesting.
Which protocol is used to automatically get an IP address when you connect to a Wi-Fi network?
Correct Answer: B. DHCP
DHCP or Dynamic Host Configuration Protocol gives your device an IP address automatically. This makes connecting to the internet easy as you don't have to enter settings manually. Your home router usually acts as the DHCP server.
The 'SMTP' protocol is primarily used for which of the following activities?
Correct Answer: B. Sending emails
SMTP is the language used by mail servers to pass messages around. It is an 'outgoing' protocol used when you click the send button. It is a core part of how the global email system works.
Which protocol is used to test if a remote computer is reachable on a network?
Correct Answer: A. ICMP
ICMP is the protocol used by the 'ping' utility. When you ping a server, you are sending an ICMP message to see if it responds. It is the most basic way to check if a network connection is working.
Which layer of the OSI model does the 'IP' (Internet Protocol) work in?
Correct Answer: C. Network Layer
The Network Layer is responsible for addressing and routing data across different networks. This is where IP addresses are used to find the destination of a packet. Routers are the main devices that operate at this layer.
Which protocol is most likely to be used for a real-time online video game?
Correct Answer: B. UDP
UDP is preferred for gaming because it is very fast. In a game, it is better to lose one packet of data than to have the whole game lag while waiting for a re-transmission. Most fast-paced online applications use UDP.
Which protocol is used to sync the time of your computer with a high-precision atomic clock?
Correct Answer: A. NTP
NTP or Network Time Protocol keeps all devices in the world on the same time. This is important for security and for keeping accurate records of when things happen on the internet. Computers usually sync with an NTP server every few hours.
What is the main difference between 'POP3' and 'IMAP' protocols?
Correct Answer: C. IMAP syncs across devices, POP3 usually downloads and deletes
POP3 usually downloads your mail to one device and can delete it from the server. IMAP leaves the mail on the server so you can see it from any device. Because of this, IMAP is the better choice for modern users with multiple gadgets.
Which protocol is considered the 'Standard' protocol for the World Wide Web?
Correct Answer: C. HTTP
HTTP or HyperText Transfer Protocol is how your browser talks to a web server. It defines how data is requested and sent so that web pages can be displayed. Today, the secure version HTTPS is used on almost every site.