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802.11 Architecture
ESS (Extended service set) two or more BSSs with APs connected through a distribution system (wired LAN) in an infrastructure network
What is point to point link? It refers to a direct connection among two computers on a network. A point to point connection does not require any other network devices other tha
5. Suppose that frames are 1250 bytes long including 25 bytes of overhead. Also assume that ACK frame are 25 bytes long. Calculate the efficiency of Stop-and-Wait ARQ in a system t
a. If a password to a cipher is exactly 8 characters long, and each character can be selected from [0-9], [a-z], and [A-Z], how many different passwords are possible? b. Suppose
It is a basic quantitative property of networks. Delay is a calculate how long it takes for a bit of data to cross across the network from one end to the other. It is calculated in
Multicast Routing Protocols Multicast group addresses are assigned by IANA [Internet Assigned Numbers Authority for well known services and protocols. Information is exchang
Star Topology Devoted point-to-point links to central controller (hub) Controller acts like exchange Advantages - Less expensive - Robustness Disadv
what is cryptography
What is ipconfig? Ipconfig is a utility program that is commonly used to recognize the addresses information of a computer on a network. It can show the physical address as wel
Explain Bus Topology. The physical Bus topology is the easiest and most widely used of the network designs. It having of one continuous length of cable (trunk) and a terminatin
bit stuffing program in python
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