Which of the following protocols is functional inside the Presentation layer? lania i BLonb a. Hypertext Transfer Protocol; b. User Datagram Protocol; c. Secure Sockets Layer; d. ICMP 217

Answer the following questions:a. In what way could TCP be considered a better protocol for implementing the transport layer than UDP? In what way could UDP be considered better than TCP? b. What is the significance of certificate authorities in public-key encryption? c. In what sense does the global nature of the Internet limit legal solutions to Internet problems?

ii)Detail the four abstraction layers that make up TCP/IP. ii) Provide a scenario in which two computers share a video file via an unencrypted ftp connection using a weak TCP three-way handshake.

q24- The transport layer of the TCP/IP network stack contains two common protocols - UDP and TCP. Briefly describe the major difference between them and explain why this difference is significant in the case of a DDoS attack.

Error Detection If error detection is provided at lower OSI layers, do you think that it is still important for UDP to provide this service, given that it is considered an "unreliable" protocol?

Suppose that web server A sends a hypertext document to a web browser in machine B. Describe briefly what happens at each protocol layer. What does encapsulation mean in the context of network protocols?

What makes the LDAP protocol special and how does it function with a PKI?