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The purpose of internetworking is universal service across heterogeneous networks. To give this service all computers, and routers have to agree to forward information from a source on one network to a specified receiver. The task is complicated as frame formats and addressing procedures may differ. The key of achieving universal service is universal protocol software (TCP/IP).
A virtual network is given in the figure that TCP/IP software gives to users and applications.
UDP Segment Structure The primary purpose of the UDP protocols is to expose datagram's to the application layer. The UDP protocols does very little and therefore employ
Bridges - Operate in both physical and data link layers - Utilized to divide a network into smaller segments - May as well relay frames between separate LANs - Keeps t
802.11 CSMA/CA a) Wait a DIFS time to avoid collision b) Send RTS and wait for CTS reply to obtain the use of the Medium (air) c) Use of SIFS time for control informatio
Q. How is computer networks used in teleconferencing? Teleconferencing: Teleconferencing allows conference to happen without the participants being in the same place. Applica
1. What does RIP stand for? 2. What metric does RIP use for Path Selection? 3. If the metric used by RIP exceeds this value for a route it is considered unreachable, effec
IGRP is a distance vector routing protocol designed by Cisco. The maximum hop count is 255, and it uses a combination of variables to verify a composite metric. IGRP has an adminis
Determine the disadvantages of SOCKS protocol The main problem with SOCKS is that it lacks transparency to software developers and users. Implementation requires a change to
DNS Tunneling – Domain Name Server "If, on one system, it is possible to transmit bits to another in any form, and in turn receive a reply as a result of that transmission, th
Question 1 Discuss the following Evolution of Data Communication Elements of Data Communication System Question 2 Explain the following
Cube: It's a 3 dimensional interconnection network. In Cube PE s are organised in a cube structure. Figure 11: Cube interconnection network
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