Which of the following statements about the Internet is true? A The Internet is a computer network that uses proprietary communication protocols. The Internet is designed to scale to support an increasing number of users. The Internet requires all communications to use encryption protocols. The Internet uses a centralized system to determine how packets are routed.
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- Task NW29. UDP is the simplest transport layer communication protocol. It contains a minimum amount of communication mechanisms. It is considered an unreliable protocol, and it is based on best-effort delivery services. UDP provides no acknowledgment mechanism, which means that the receiver does not send the acknowledgment for the received packet, and the sender also does not wait for the acknowledgment for the packet that it has sent. An end system sends 50 packets per second using the User Datagram Protocol (UDP) over a full duplex 100 Mbps Ethernet LAN connection. Each packet consists 1500B of Ethernet frame payload data. What is the throughput, when measured at the UDP layer? Task DS30The benefits and drawbacks of connectionless protocols must be weighed against those of connection-based ones.Layered protocols are beneficial for the following reasons. Give specific examples to support your claims and explanations.
- As compared to protocols that are dependent on connections, connectionless protocols provide a number of benefits but also some drawbacks.For HTTP surfing sessions, which contemporary protocol is utilised to ensure that messages are encrypted and secure?9. HTTP uses TCP for communication. TCP provides connections that are reliable and involve multiple message exchanges. Yet HTTP is said to be connectionless. Explain the apparent contradiction.
- Https is a protocol used to secure websites from being tampered with by other parties without proper authorization. it bridges the gap between sender and receiver.Using protocols like secure socket layer/TLS, HTTPS encrypts data sent over the internet, making it unreadable to anybody who shouldn't have it.This prevents a "man in the middle" assault on the system.Such assaults intercept messages before they reach their intended recipient.It then transmits the revised information to the user.It guarantees the server's authenticity, too.List some benefits and drawbacks of connectionless protocols over protocolsthat maintain connections.Many services like, for example email and chats, are now beingdone over hbp and hbps protocols. Now network security admins have aproblem in the sense that these services are increasingly encrypted withsophis8cated technologies, and the ability to process packets goes down.Let us assume that you are one such admin. Your company (rightly so) doesnot want you to write programs execu8ng on employee computers tomonitor what employees send and receive over the Internet due to privacyexpectations. Things like capturing user screens, key stroke loggers are notallowed. What you can monitor though is router/ firewall traffic, since thatis off limits to employees. In this case, do you completely give up loggingpackets at router side due to encryption, or is there some use to logging IPpackets at the router for security purposes? Please justify keeping commonabacks we saw in class in mind. Recall how a packet at the router looks likebelow. Payload is the actual data portion (most likely…
- What is the private network's url? Should a datagram with an address from a private network ever be seen on the larger public Internet? Explanation.Why do protocols such as HTTP, FTP, SMTP, and POP3 utilise TCP instead of the less reliable UDP?Compare connectionless (UDP) and connection-oriented (TCP) communication for the implementation of each of the following application-level or presentation-level protocols: Virtual terminal access (for example, Telnet). File Transfer (for example, FTP). User location (for example, rwho, finger).