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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 not reach, the previous data is retransmitted. This is given in the figure below:
Question 1 What is bandwidth? >>What is the bandwidth of a) Telephone signal b) Commercial radio broa
Define the term - Proxy servers These types of firewalls have been further classified into two types: application level gateways and circuit level gateways. The application
State the Example of security audit as case study Linda narrates one of her experience about a security audit. She was performing a spot audit where she was checking certain
Q. Advantages of Fiber Optics? - Higher bandwidth in comparison to twisted-pair and coaxial cable is not limited by medium but by equipment used to generate and receive signals
what is a WAN
Question: (a) What do you meant by the term ‘LAN'? How is a LAN different from a WAN? (b) Explain three types of cables which are commonly used with LANs. (c) Three com
What is OSI and what role does it play in computer networks? OSI (Open Systems Interconnect) serves as a reference model for data communication. It is made up of 7 layers, with
DNS - Server Attacks It’s not so easy to list all the associated attacks as they are evolving way so fast. As any error of flaw is identified, a patch is released in response
Explain how does router share information in Distance Vector routing?
Bridges The bridge function is to attach separate homogeneous networks. Bridges map the Ethernet address of the nodes residing on each network segment and allow only essential
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