Quick Answer: What Does A Router Use To Make A Decision About Routing Packets?

What does router use when making decisions about routing TCP IP packets?

Which of the following does a router normally use when making a decision about routing TCP/IP packets? C (Destination IP address). Routers compare the packet’s destination IP address to the router’s IP routing table, making a match and using the forwarding instructions in the matched route to forward the IP packet.

Which address does a router use to make routing decisions?

Routers examine the destination IP address of a received packet and make routing decisions accordingly. To determine out which interface the packet will be sent, routers use routing tables. A routing table lists all networks for which routes are known.

What information does a router use to determine where a packet is?

When the router receives a packet, it looks at its IP header. The most important field is the destination IP address, which tells the router where the packet wants to end up.

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How are routing decisions made?

In general, routing protocols can use one of two different approaches to making routing decisions: Distance vectors A distance-vector protocol makes its decision based on a measurement of the distance between the source and the destination addresses.

How do routers route?

Routers figure out the fastest data path between devices connected on a network, and then send data along these paths. To do this, routers use what’s called a “metric value,” or preference number. If a router has the choice of two routes to the same location, it will choose the path with the lowest metric.

How does a router select the best route?

A primary function of a router is to determine the best path to use to send packets. To determine the best path, the router searches its routing table for a network address that matches the destination IP address of the packet.

Which route will a router use to forward an IPv4 packet?

The A level 1 ultimate route is the route that a router would use to forward an IPv4 packet after examining its routing table for the best match with the destination address.

What two pieces of information does a router require to make a routing decision?

What two pieces of information does a router require to make a routing decision? Destination IP address/Neighbor router address; Each router that receives a packet makes routing decisions based on the packet’s destination IP address.

What is the proper subnet mask for an IP address of 192.168 1.1 24?

So in the example above we would write 192.168. 1.1/24 which means it takes 24 bits to determine the network address, thus having the netmask 255.255. 255.0.

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Which device has the most network ports?

A hub contains multiple ports. When a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets. Hub acts as a common connection point for devices in a network.

What happens when a router receives a packet with a TTL of 0?

What happens when a router receives a packet with a TTL of 0? The router drops the packet and sends an ICMP TTL expired message back to the host. The hosts will still send and receive traffic, but traffic may not always reach the correct destination.

How does a router know where traffic is?

Routers are devices used to interconnect networks. When a packet reaches a router, it will look at the destination address to determine where to send the packet. If the router’s forwarding tables know where the packet should go, the router will send the packet out along the appropriate route.

What are the main issues in routing?

Issues in routing protocol

  • Issues in routing Mobility Bandwidth constraint Error prone shared broadcast radio channel hidden and exposed terminal problems Resource Constraints.
  • Mobility highly dynamic frequent path breaks frequent topology changes.

Why do we need routing?

Routing is the hub around which all of IP connectivity revolves. At the simplest level, routing establishes basic internetwork communications, implements an addressing structure that uniquely identifies each device, and organizes individual devices into a hierarchical network structure.

What is the goal of routing?

Routing. Routing is the process of forwarding of a packet in a network so that it reaches its intended destination. The main goals of routing are: Correctness: The routing should be done properly and correctly so that the packets may reach their proper destination.

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