Why is check summing used in the Transport Layer and cyclic redundancy check used in the link layer? Before answering, describe how both protocols are implemented.
Why is check summing used in the Transport Layer and cyclic redundancy check used in the...
Describe briefly (in 3 lines max) what is CRC (Cyclic Redundancy Checksum) In which layer does it exist? Why it can't be used for network security?
5. Describe how the following Transport Layer protocols work:
→ XCO Question 1 2.5 pts 1 Hour, 57 Minutes, 36 Seconds In both transport layer protocols, reliable and guaranteed delivery of packets are guaranteed. True False Question 2 2 2.5 pts The Internet does not perform any error detection on datagrams and leaves it to the end users. True False Question 3 2.5 pts Link layer protocol is implemented only in the source and destination hosts O True False
Networks work because of protocol standards. The transport layer has three prominent protocols, namely TCP and UDP, both of which can be in use at the same time by different application laver protocols. Explain why we might allow several protocols to be active in one layer at the same time rather than mandate a single best-practice standard to each layer of the network stack.
Data Commincations: Error Detection and Correction Help understanding Excerpt: Text reads: "The Internet checksum provides greater error-detection capability than a parity bit or two-dimensional parity scheme but is considerably less effective than the cyclic redundancy check (CRC), discussed next. The primary reason for its adoption in Internet protocols is efficiency. Most of these protocols are implemented in software and the Internet checksum, involving simple addition and comparison operations, causes very little overhead. It is assumed that at the lower link...
Cyclic Redundancy Check (CRC): Part 1 Answer the following questions: 1. Implement a CRC generator using only 'XOR' gates and shift buffers. Polynomial of the CRC-3 is "l11" which is "X2+X+1". (3 point) Figure 1. An Hardware Implementation of the CRC decoder 2. Suppose the same CRC-3 generator was used for generating a CRC frame and sent to a receiver. The CRC frame received at the receiver was "110101". Answer the following questions. (7 point) What is the bit length...
1ai. Why layered network architectures. Give a concise description of how layer networks are implemented. ii. Describe the function and services offered by TCP/IP protocols. iii. The following terms have been used to describe the hypertext transfer protocol(HTTP) protocol: client-server, stateless, non-persistent and persistent connection. Describe each term. iv. Identify session layer and presentation layer function in the HTTP protocol. b. Suppose a computer is moved from one department to another. Answer yes or no to the following questions and...
Let's review some terminology - lets match the tcp/ip stack layer with the term used to describe the 'packet' for that layer. Layers: Transport Layer, Network Layer, Link Layer, Application Layer Terms: Chunk, datagram, frame, segment, fragment, message
1. Which of the following protocols is used by a client to send an email message? a. HTTP SMTP b. FTP d. RDP 2. What is the most common network topology today? a/Star c. Hub Ring d. Mesh 3. A client/server network is the simplest network model. a/ True O False 4. Which client server application allows an administrator to control a remote computer, but does not encrypt or secure the communication between client and server? A Telnet C. Remote...
Why wireless links provide lower reliability compared to wired links? You turn on your phone and after few seconds you can see a list of available 802.11 networks. From the 802.11 protocol point of view, how does this happens? Ethernet and 802.11 are both data-link layer protocols designed for wired and wireless networks, respectively. Why a 802.11 receiver expects ACK reception while Ethernet does not have such requirement. Where CSMA/CD and CSMA/CA are used? and what are the differences? What...