Professor Adda NET SET

22. What is the main role of a DNS resolver?
(a) To cache domain names and IP addresses
(b) To provide network address translation
(c) To convert domain names into IP addresses ✅
(d) To monitor network traffic

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23. Which protocol is used for real-time communication and streaming?
(a) HTTP
(b) RTP ✅
(c) SMTP
(d) SNMP

24. In networking, what does "latency" refer to?
(a) The rate of data transmission
(b) The time delay experienced in data transmission ✅
(c) The amount of data per second
(d) The level of encryption used in communication

25. Which network topology communicates through a central hub with all devices?
(a) Mesh Topology
(b) Ring Topology
(c) Star Topology ✅
(d) Bus Topology

26. What is the main role of Network Address Translation (NAT) devices?
(a) To encrypt network traffic
(b) To translate private IP addresses to public IP addresses ✅
(c) To manage email distribution
(d) To store web content

27. In IPv6, what is the purpose of the /64 prefix Join Professors Adda?
(a) To specify the number of hosts in a subnet ✅
(b) To define the size of an IPv6 address
(c) To indicate the length of the subnet mask
(d) To identify routing protocols

28. Which protocol is used for secure file transfer over the internet?
(a) SFTP ✅
(b) HTTP
(c) FTP
(d) Telnet

29. What is the role of a proxy server in a network?
(a) To temporarily store data
(b) To provide anonymity and filter content ✅
(c) To provide email communication
(d) To provide DNS resolution

30. Which technology is used to create a Virtual Private Network (VPN)?
(a) IPsec ✅
(b) FTP
(c) SMTP
(d) DNS

31. In the context of the OSI model, which layer does the TCP protocol operate on?
(a) Network Layer
(b) Transport Layer ✅
(c) Data Link Layer
(d) Application Layer

32. What is the main difference between TCP and UDP protocols?

(a) TCP is connection-oriented and reliable; UDP is connectionless and faster Professor Adda ✅
(b) TCP is connectionless and faster; UDP is connection-oriented and reliable
(c) TCP uses IP addresses; UDP uses domain names
(d) TCP is used for file transfer; UDP is used for email

33. What is the full form of BGP and what is its main function?
(a) Border Gateway Protocol; it exchanges routing information between different networks ✅
(b) Basic Gateway Protocol; it manages network addresses within a local network
(c) Binary Gateway Protocol; it handles encryption for secure communication
(d) Bandwidth Gateway Protocol; it optimizes data transfer speed

34. Which technology allows creating multiple virtual networks on a single physical network?
(a) VLAN (Virtual Local Area Network) ✅
(b) NAT (Network Address Translation)
(c) VPN (Virtual Private Network)
(d) DHCP (Dynamic Host Configuration Protocol)

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35. What is the main purpose of a Content Delivery Network (CDN)?
(a) To provide secure email services
(b) To geographically distribute content to improve access speed and reliability ✅
(c) To provide domain name resolution
(d) To handle large-scale data storage

36. What is the main purpose of a subnet mask in IP networking?
(a) To determine the number of available IP addresses in a network ✅
(b) To define routing protocols used in the network
(c) To encrypt data packets
(d) To convert domain names into IP addresses

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