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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 information of the correct IP address, even the physical location of the network can't be identified. Proxy servers can make a network virtually invisible to external users.
PING - Packet Internet Gopher A utility that shows connections to one or more remote hosts. The ping command uses the ICMP echo request and echo reply packets to verify whether
IPv6 packet Format The format of an IPv6 header is shown in figure. Although IPv6 addresses are four times the size of IPv4 address the basic IPv6 header is only twice
Fully connected : It is the most powerful interconnection topology. In this every node is directly associated to all other nodes. The limitation of this network is that it needs t
What are NETBIOS and NETBEUI? NETBIOS is a programming interface that permits I/O requests to be sent to and received from a remote computer and it hides the networking hardwar
Q. Show the Use of flow control? Flow control denotes to a set of procedures used to restrict the amount of data that the sender can send before waiting for Error Control
Different layers of OSI Model ?
IPv6 The internet engineering task force begin the effort to develop a successor protocols to IPv4 in the early 1990 is an internet layer protocols for packet switched
Tree interconnection network Tree interconnection network(TIN)), processors are organized in a whole binary tree pattern.
Firewall The NAT router allows receiving of number of a data streams. If it receives a transmission in the form of acknowledgement or data streams or error responses from an ex
(i) Suppose that frames are 1250 bytes long including 25 bytes of overhead. Also assume that ACK frames are 25 bytes long. a) Calculate the efficiency of stop-and-wait ARQ in
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