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Access ControlsAccess controls addresses admission of a user into a trusted area of organization. It comprises of a combination of policies & technologies. The ways to control access are as follows•Mandatory access controls (MAC) – give offers limited control over access to information resources. Lattice based access control: variation of MAC; user’s assigned matrix of authorizations for the areas of access.•Nondiscretionary controls - managed by a central authority in organization; is based on individual’s role or a specified set of assigned tasks. •Discretionary access controls (DAC) - implemented at discretion/option of data user.
CSMA/CA Wireless needs collision avoid ness rather than collision checking. Transmitting computer puts very short codes to receiver. Receiver responds with short message getti
Question : (a) State whether the following statement is FALSE or TRUE: It is always better to have various access points to the Internet so that if a hacker takes one down you
FRAGMENTATION AND PATH MTU IPv6 source is responsible for fragmentation. Routers simply drop datagrams bigger than network MTU. So source have to fragment datagram to arrive d
Question: (a) Mention three limitations of a firewall. (b) Compare packet-filtering and proxy-base firewalls. Give advantages and drawbacks of both. (c) "Proxies eff
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QUESTION a) Determine the RTT (round trip time) between a client requesting a web page of 1024 bytes in size from an internal web server on a 100 Base-T Ethernet. Consider a o
Application Gateways / firewall The application level firewall is installed on a dedicated computer; also called as a proxy server. These servers can store the recently accessed
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