What is the difference between osi and dod

PPTP is a method for implementing virtual private networks. Site-to-site VPN can be intranet based or extranet based. Intranet-based site-to-site VPN is created between an organization's propriety networks, while extranet-based site-to-site VPN is used for connecting with external partner networks or an intranet. IPsec Internet Protocol Security : IPsec is a framework for a set of protocols for security at the network or packet processing layer of network communication. What protocol would you use if you were running xDSL and needed authentication?

A VPN can be set up across any type of link. Which of the following is an industry-wide standards suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer3 Network layer of the OSI model? IPSec is an industry-wide standard suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer3 Network layer of the OSI model.

How should a router that is being used in a Frame Relay network be configured to keep split horizon issues from preventing routing updates. If you have a serial port configured with multiple DLCIs connected to multiple remote sites, split horizon rules stop route updates received on an interface from being sent out the same interface. By creating subinterfaces for each PVC, you can avoid the split horizon issues when using Frame Relay.

Terms of Use. SBI Clerk. SBI PO. Local Area Network. The Difference Between. Study now. See Answer. Best Answer. Study guides. Computer Networking 20 cards. How do you connect to a secured wireless network. What service translates domain names computer hostnames to IP addresses. When was the first commercial computers sold. Computer Networking 24 cards. What is the maximum length of a cable on a baseT network. What does the in the name baseT indicate.

Name three types of Ethernet What transmission speed does each support. Of ipxspx tcpip and netbeui which is routable and which is not. Computer Networking 26 cards. Q: What is the difference between osi and dod model? Write your answer Related questions. What are the differences between OSI model? What is the difference when dealing with your virtual machines about the OSI model? Difference between osi and tcpip model? What is OSI model used for?

What is the difference between osi and iso model? Which OSI model layer is responsible for the termination of connections between hosts? What is the difference between the ATM model and the osi reference model? Which one is the best model between osi and tcpip and why? What is the difference between osi and tcp model? Which model came first osi model or tcpip?

The Internet Protocol IP is a network-layer Layer 3 protocol that contains addressing information and some control information that enables packets to be routed. IP has two primary responsibilities: providing connectionless, best-effort delivery of datagrams through an internetwork; and providing fragmentation and reassembly of datagrams to support data links with different maximum-transmission unit MTU sizes. The Internet Layer IP has a complete picture of the entire network and is responsible for path determination and packet switching.

It lets the upper layer protocols that use it worry about reliability. IP will perform as a connectionless service because it handles each datagram as an independent entity. IP performs packet switching and path determination by maintaining tables that indicate where to send a packet based on its IP address.

IP gets the destination address from the packet. IP receives segments from the Host-to-Host layer and fragments them into packets. IP will then reassemble the packets into segments on the receiving end to send to the Host-to-Host layer. Each packet has the source and destination IP address. Each router will make path determinations based on the destination IP address.

If an ICMP message cannot be delivered, no second one is generated. This is to avoid an endless flood of ICMP messages.

When an ICMP destination-unreachable message is sent by a router, it means that the router is unable to send the package to its final destination.

The router then discards the original packet. Destination-unreachable messages include four basic types: network unreachable, host unreachable, protocol unreachable, and port unreachable. An ICMP echo-request message, which is generated by the ping command, is sent by any host to test node reachability across an internetwork.

The ICMP echo-reply message indicates that the node can be successfully reached. An ICMP Redirect message is sent by the router to the source host to stimulate more efficient routing. The router still forwards the original packet to the destination. ICMP redirects allow host routing tables to remain small because it is necessary to know the address of only one router, even if that router does not provide the best path.

Even after receiving an ICMP Redirect message, some devices might continue using the less-efficient route. The Time-to-Live field prevents packets from continuously circulating the internetwork if the internetwork contains a routing loop.

Routers discard packets that have reached their maximum hop count and tell the source machine that the packet is expired.