information security, Computer Networking

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Perfect shuffle permutation-concept of permutation network, Perfect Shuffle...

Perfect Shuffle Permutation This was advised by Harold Stone (1971). Consider N objects each characterized by n bit number say  X n-1, X n-2, X 0    (N is chosen such that N

What do you understand by service access point, Q. How two adjacent layers ...

Q. How two adjacent layers communicate in a layered network or what do you understand by Service Access Point? Ans: In layered network, each layer has several entities and enti

Packet loss and retransmission in tcp, Packet loss and retransmission in TC...

Packet loss and retransmission in TCP TCP gets reliability by retransmission. An acknowledgement is used to check that data has arrived successfully. If acknowledgement does no

What is difference between arp and rarp, What is difference between ARP and...

What is difference between ARP and RARP? The address resolution protocol (ARP) is used to associate the 32 bit IP address with the 48 bit physical address, used by a host or a

What is an arp and how does it work, ARP(ADDRESS RESOLUTION PROTOCOL) is a ...

ARP(ADDRESS RESOLUTION PROTOCOL) is a network layer protocol which associates the physical hardware address of a network node(commonly called as a MAC ADDRESS) to its ip address. n

Asynchronous or statistical time division multiplexing, Asynchronous or Sta...

Asynchronous or Statistical Time Division Multiplexing As we  have seen  synchronous  TDM does not  guarantee that the full capacity of a link in sued. In fact it is more like

Packet switching, Suppose there are exactly five packet switches (Figure 4)...

Suppose there are exactly five packet switches (Figure 4) between a sending host and a receiving host connected by a virtual circuit line (shown as dotted line in figure 4). The tr

What are proxy server, What are proxy servers and how do they protect compu...

What are proxy servers and how do they protect computer networks? Proxy servers primarily stop external users who identifying the IP addresses of an internal network. Without i

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