The "building blocks" of data transmission networks include switches, routers, and cabling; therefore, how should these components of the network be protected?
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The "building blocks" of data transmission networks include switches, routers, and cabling; therefore, how should these components of the network be protected?
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- To what extent do components such as switches, routers, and cabling in data transmission networks need to be guarded against unauthorized access?Transmittal protocols In the current state of network design, using both TCP and UPD has its pros and cons.The Protocols of Transmission With the present configuration of networks, TCP and UPD both have their benefits and drawbacks.
- An entry in the switching table of a virtual-circuit network is normally created during the setup phase and deleted during the teardown phase. In other words, the entries in this type of network reflect the current connections, the activity in the network. In contrast, the entries in a routing table of a datagram network do not depend on the current connections; they show the configuration of the network and how any packet should be routed to a final destination. The entries may remain the same even if there is no activity in the network. The routing tables, however, are updated if there are changes in the network. Can you explain the reason for these two different characteristics? Can we say that a virtual-circuit is a connection oriented network and a datagram network is a connectionless network because of the above characteristics?(b) The Internet Protocol (IP) can sometimes surprise with its flexibility. Since the overall design is close enough to the principles of the OSI Protocol Model, IP is independent of the Data Link and Physical network layers. And some Norwegians indeed showed successful IP network transmission is possible with carrier pigeons. If we would want to attempt to use carrier pigeons to establish a TCP connection between Canterbury and London, how long would it take to successfully establish the transmission under perfect conditions? (Assume the pigeons are perfectly reliable.) Explain how you come to your result. (1)3. 15. An entry in the switching table of a virtual-circuit network is normally created during the setup phase and deleted during the teardown phase. In other words, the entries in this type of network reflect the current connections, the activity in the network. In contrast, the entries in a routing table of a datagram network do not depend on the current connections; they show the configuration of the network and how any packet should be routed to a final destination. The entries may remain the same even if there is no activity in the network. The routing tables, however, are updated if there are changes in the network. Can you explain the reason for these two different characteristics? Can we say that a virtual-circuit is a connection-oriented network and a datagram network is a connectionless network because of the above characteristics?
- A 1500 byte message is sent over the network using a protocol stack with HTTP, TCP, IP and Ethemet. Each protocol header is 20 bytes long. The percentage of the network bandwidth "on the wire" is wasted due to the overhead is (in %).Sliding Window Algorithms This question considers a sliding window implementation across a full-duplex point-to-point link. The link has a bandwidth of 327 kbps in each direction and a one-way propagation delay of 100 milliseconds. All packets sent across the link are 1,024 bytes long, including all headers and trailers. What send window size (SWS) is necessary to fully utilize the network?Question 1: True or False: [ F ] Telephone network is an example of Packet Switching network. [ F ] It is the network layer’s responsibility to forward packets reliably from the source to the destination [. T ] Flow control is required to assure that the source does not overwhelm the destination by sending data faster than they can be processed and absorbed. [ ] The key elements of a Protocol are syntax, semantics, and error control [ ] User Datagram Protocol (UDP) can guarantee data delivery. [ ] Routing decision is always required for every packet of a message at each node in packet switched network. [ ] In OSI model data link layer provides for the reliable transfer of information across the physical link; sends blocks (frames) with the necessary synchronization, error control, and flow control. [ ] The transport layer is responsible for hop-by-hop communication. [ ] Because the boundaries between layer are well defined change in standard in one layer effect already existing…
- - 3 - (b) The Internet Protocol (IP) can sometimes surprise with its flexibility. Since the overall design is close enough to the principles of the OSI Protocol Model, IP is independent of the Data Link and Physical network layers. And some Norwegians indeed showed successful IP network transmission is possible with carrier pigeons. (i) If we would want to attempt to use carrier pigeons to establish a TCP connection between Canterbury and London, how long would it take to successfully establish the transmission under perfect conditions? (Assume the pigeons are perfectly reliable.) Explain how you come to your result. For the experiment, let's assume that the concrete distance between Canterbury and London is 60miles (or ca. 100km) and our pigeons fly with a speed of 60 miles per hour (or ca. 100km/h). (ii) With current technology and considering the weight a pigeon can carry, we are able to send 2TB of data on an USB stick with a pigeon. On a 4G mobile network, we can likely send about…Answer the given question with a proper explanation and step-by-step solution. Why is TCP/IP fragmentation important for internet communications? What would likely happen on the internet without that fragmentation? Why is TCP considered a "reliable" communication protocol but HTTP and Ethernet considered "not reliable"? Is there some "better way" to arrange internet communications?Network Address Translation, or NAT, was used very often before IPv6 was fully implemented as a means to mask IPs, as well as to have many more IPs at one's disposal behind a router. Now that we are fully into using IPv6, is NAT needed anymore? What would some of the utility of NAT be?