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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
Q. Explain Dynamic Domain Name System? DDNS - Dynamic Domain Name System automatically updates the DNS master file - Sent by DHCP to a primary DNS server; secondary se
Responses Responses are sent from the server to the client. A responses is a three digit code that may be followed by additional textual information.
Briefly write functionalities of different OSI layers? The OSI Reference Model includes seven layers. Basic functionality of each of them is as follows: 1. Physical Layer:
Q. Comparing Transport for TCP/IP and osi model? - The features of TCP and UDP defined at TCP/IP Transport Layer correspond to many of the requirements of the OSI Transport Lay
What is Framing? Framing in the data link layer divides a message from one source to a destination, or from other messages to other destinations, by adding a sender address and
Explain Is NAT a firewall?
Q. Describe OSI Routing Architecture? End systems (ESs) as well as intermediate systems (ISs) use routing protocols to distribute (-advertise?) some or all of the informati
Full-Duplex Ethernet 10Base5 as well as 10Base2 are half-duplex Full-duplex raises capacity of each domain No require for CSMA/CD
what are usages of gogle and internet
Can you describe the concept of DHCP?
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