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Q. Show VPNs Security and the Internet Model?
- VPN's Security and the Internet Model
- Application layer - provide for each application protocol (other layers may be left vulnerable)
- Transport layer - difficult to change existing protocols
- Network layer - IPsec (additional security for IP)
- Data Link layer - does not provide end-to-end security
Role of Software in Intranet For an Intranet to be successful, it must have strong software support. In this section, a brief description of the operating system, groupware an
Connecting Devices of bridges - Five kinds: - Repeaters - Hubs - Bridges - Two- and three-layer switches - Repeaters and hubs - layer one of Internet model -
discuss the concept of redundancy in error detection and correction
Describe the concept of internetwork and intranetwork routing protocols?
Q. Show the Congestion control in TCP? Congestion control in TCP TCP assumes that the cause of lost segment is due to congestion in the network Retransmission of
What are the functions of the typical server program? Ans) It waits for client-initiated requests. Implements many requests at the similar time. Takes care of VIP clients first.
Name the OSI layer which performs code conversion, code formatting and encryption Ans) Presentation layer performs code conversion, code formatting and encryption
What are the popular topologies other than basic Topologies? Apart from basic topologies some other topologies worth considering are: mesh topology (each device linked to all o
Error Detection- Check Sum The Checksum generator are subdivides the data unit into equal segments of "n" bits (usually 16) These segments are added utilizing one's c
Name various types of guided and unguided transmission media. If you are connecting your office computers through a local area network which transmission media would you use? Why?
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