Which information is used by routers to forward a data packet toward its destination?

How do routers forward packets? The router uses a switching function; it accepts the packet on one interface, then forwards that packet out on another interface. The switching function must encapsulate the packets using an appropriate data link frame type so that the outgoing data link is successful.

How does it decide? The router has a forwarding table that helps it pick the next path based on the destination IP address. That table does not have a row for every possible IP address; there are 2 32 2^ 2 3 2 2, start superscript, 32, end superscript possible IP addresses, and that's far too much to store. Instead, the table has rows for IP address prefixes. Routing tables can be built in two ways. The first method is the manual one, you basically have a system administrator who enters possible routes. For the second method you basically use routing protocols (e.g. the OSPF - Open Shortest Path First) that automatically create and update a database of possible routes. In part 3, it says, "The router has multiple paths it could send a packet along, and its goal is to send the packet to a router that's closer to its final destination." Does that mean that different routers communicate with one another, and that your router is used to transport other people's data? Is so, how do they do so (e.g. wirelessly, which means that they would have to be close together)? Additionally, wouldn't that decrease the speed of routers in heavily populated areas, since they would be processing more information that routers in, say, rural areas? Routers work with each other, but those are public routers made for this purpose (think huge information hubs, a bit like airports for information). Running internet connections over private routers would be incredibly dangerous because anyone could j...

Explanation: The enable command is entered at the R1> prompt. The login command is entered at the R1(config-line)# prompt. The copy running-config startup-config command is entered at the R1# prompt. The interface fastethernet 0/0 command is entered at the R1(config)# prompt. 2. Which three commands are used to set up secure access to a router through a connection to the console interface? (Choose three.) • interface fastethernet 0/0 • line vty 0 4 • line console 0 • enable secret cisco • login • password cisco Explanation: The three commands needed to password protect the console port are as follows: • line console 0 • password cisco • login The interface fastethernet 0/0 command is commonly used to access the configuration mode used to apply specific parameters such as the IP address to the Fa0/0 port. The line vty 0 4 command is used to access the configuration mode for Telnet. The0and 4 parameters specify ports 0 through 4, or a maximum of five simultaneous Telnet connections. The enable secret command is used to apply a password used on the router to access the privileged mode. 3. Refer to the exhibit. Consider the IP address configuration shown from PC1. What is a description of the default gateway address? • It is the IP address of the Router1 interface that connects the company to the Internet. • It is the IP address of the Router1 interface that connects the PC1 LAN to Router1. • It is the IP address of Switch1 that connects PC1 to other devices on the same LAN. •...

Chapter Description This sample chapter from Routing and Switching Essentials v6 Companion Guide, answer the question, “What does a router do with a packet received from one network and destined for another network?” Details of the routing table will be examined, including connected, static, and dynamic routes. Router Operation (1.3) To make routing decisions, a router exchanges information with other routers. Alternatively, the router can also be manually configured on how to reach a specific network. In this section you will explain how a router learns about remote networks when operating in a small to medium-sized business network. Analyze the Routing Table (1.3.1) The routing table is at the heart of making routing decisions. It is important that you understand the information presented in a routing table. In this topic, you will learn about routing table entries for directly connected networks. The Routing Table (1.3.1.1) The routing table of a router stores information about the following: • Directly connected routes —These routes come from the active router interfaces. Routers add a directly connected route when an interface is configured with an IP address and is activated. • Remote routes —These are remote networks connected to other routers. Routes to these networks can be either statically configured or dynamically learned through dynamic routing protocols. Specifically, a routing table is a data file in RAM that stores route information about directly connected...

Question: A computer has to send a packet to a destination host in the same LAN. How will the packet be sent? • The packet will be sent to the default gateway first, and then, depending on the response from the gateway, it may be sent to the destination host. • The packet will be sent directly to the destination host. • The packet will first be sent to the default gateway, and then from the default gateway it will be sent directly to the destination host. • The packet will be sent only to the default gateway. Explanation: If the destination host is in the same LAN as the source host, there is no need for a default gateway. A default gateway is needed if a packet needs to be sent outside the LAN. Exam with this question: Exam with this question: Exam with this question: Exam with this question: Exam with this question: Exam with this question: Exam with this question: Post navigation

This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. See Answer See Answer See Answer done loading Question:1) The information that is used by routers to forward a data packet toward its destination: 2) The layer responsible for packet forwarding including routing through intermediate routers.: 3) A special type of networking address that is reserved for sending messages to all nodes: 4) The first octet of an IPv4 Class A.: 5) A technique that enables a network 1) The information that is used by routers to forward a data packet toward its destination: 2) The layer responsible for packet forwarding including routing through intermediate routers.: 3) A special type of networking address that is reserved for sending messages to all nodes: 4) The first octet of an IPv4 Class A.: 5) A technique that enables a network administrator to divide a single private IP network into multiple smaller logical subnetworks by subdividing the host address into a subnetwork address and host address.:

Not to be confused with In routing table, or routing information base ( RIB), is a The construction of routing tables is the primary goal of Overview [ ] A routing table is analogous to a distribution map in where to send it. If the node cannot directly connect to the destination node, it has to send it via other nodes along a route to the destination node. Each node needs to keep track of which way to deliver various packages of data, and for this it uses a routing table. A routing table is a database that keeps track of paths, like a map, and uses these to determine which way to forward traffic. A routing table is a data file in RAM that is used to store route information about directly connected and remote networks. Nodes can also share the contents of their routing table with other nodes. The primary function of a router is to forward a packet toward its destination network, which is the destination IP address of the packet. To do this, a router needs to search the routing information stored in its routing table. The routing table contains network/next hop associations. These associations tell a router that a particular destination can be optimally reached by sending the packet to a specific router that represents the next hop on the way to the final destination. The next hop association can also be the outgoing or exit interface to the final destination. With hop-by-hop routing, each routing table lists, for all reachable destinations, the address of the next device a...