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Firewalls
After several security related internet newsgroups started overflowing with posts it becomes clear something hand to done to help secure networks. The first firewalls were implemented in routers between different segment s of the network. These firewalls were basically ACLs in routers.
Slowly firewall technology started to evolve. Early firewall technology known as packet filtering was not enough to stop the constant attacks. The firewall had to more intelligent and understand the different protocols.
Q. Show Data link and Physical vs Subnet? - Data link layer The function of the Data Link Layer is -offers for the control of the physical layer and detects and possib
Q. Illustrate Keep alive and Time-Waited Timer? Keep alive timer To prevent a long inactive connection between two TCPs - Either client or server crash
java program to implement framing techniques of datalink layer
Q. What is Topology? - Physical/logical arrangement - Topology of a network is the geometric depiction of the relationship of all the links and linking devices to one anothe
What is autonomous system? It is a collection of routers under the control of a one administrative authority and that uses a common Interior Gateway Protocol.
Pipelined Processor A pipeline processor can be described as a processor which comprises of a series of processing circuits known as segments and a stream of operands (data) is
Explain twisted pair cable. A pair of wires twisted with each other is CALLED as twisted pair cable. A set of four pairs of twisted wires are bundled to form cable. These are
Problem 1 Describe the architecture of the TCP/IP protocol suite Problem 2 Describe the principle of operation of REXEC protocol Problem 3 Describe the concept
802.11a OFDM a) Orthogonal frequency-division multiplexing utilizing a 5-GHz band b) Same as FDM except all sub bands are used by only one source at a given time c) Secu
Briefly write functionalities of different OSI layers? The OSI Reference Model includes seven layers. Basic functionality of each of them is as follows: 1. Physical Layer:
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