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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.
What is difference between baseband and broadband transmission? In a baseband transmission, the whole bandwidth of the cable is consumed by a one signal. In broadband transmiss
CSMA/CD - A Simple Definition A network station wishing to broadcast will first check the cable plant to make sure that no other station is currently transmit
As there will be more devices there will be more traffic of information. We can include capacity to WAN by adding more links and packet switches. Packet switches use not have compu
Shared variable programme structures In this section, we talk about some more concepts related to the shared programme. Concept of Lock Locks are used for protected a
Explain the Acknowledged connectionless service This is a cross between the previous two services. It provides that datagrams are to be acknowledged, but no prior logical conne
Q. Show the Vulnerability of the Internet? More vulnerable than private network. Wide inter-network connection. Easy access by mass public world-wide. Lack of build in
Buffering This protocols provides the advantage of buffering to the receiver can buffer any out of order packets after being received by sending acknowledgment when
Define the Bulletin Board Intranet This type of Intranet in an organisation extends to everyone the capability to review or update information that would normally be placed
What is a File server? File servers are helpful for sharing files across a network. With a file server, the client passes requests for file records over system to file server.
What is Star topology Each station is directly connected to a common central node. Typically, each station attaches to a central node via two point-to-point links, one for tran
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