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Q. Show VPNs Security and the Internet Model?
- VPN's Security and the Internet Model
- Application layer - provide for each application protocol (other layers may be left vulnerable)
- Transport layer - difficult to change existing protocols
- Network layer - IPsec (additional security for IP)
- Data Link layer - does not provide end-to-end security
Can you define PAP?
Can you define the method of demilitarized zone?
Elements of protocol
Token Bus Physical order of stations doesn't matter Line is broadcast medium "Send" token by addressing neighbour Provisions for deleting, adding stations
Connectionless Multiplexing and De multiplexing Java program running in a host can create a UDP socket with the line Datagram's socket my socket = new datagram's socket
It is an additional 16-bit number which uniquely identifies the specific service on any given machine on the Internet. Port numbers are 16 bit wide, so each of the computers on the
What are different kinds of dynamic protocols?
What is a Management Information Base (MIB)? A Management Information Base is part of each SNMP-managed device. Every SNMP agent has the MIB database that having information ab
Take the maximum packet lifetime, T. It's stated that T must be big enough to make sure the packet and its ACK have vanished. Why do we have to have the ACK?
Q. Illustrate the Drawbacks of stop and wait? Drawbacks of stop and wait - Only one frame is able to be in transit at a time - After every frame sent the host must wai
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