IS 302 - Module 5 (Chapter 8)

routing table

-Each router has a routing table that it uses to make routing decisions -Routing tables have rows -Each row represents a route for a range of IP addresses—often packets going to the same network or subnet

networks

A border router connects different IP ________.

32

A mask has ________ bits.

Host part

A term used to describe a part of an IPv4 address that is used to uniquely identify a host inside a subnet. The ______ is identified by the bits of value 0 in the subnet mask.

TCP/IP (Transmission Control Protocol/Internet Protocol)

Dominates the work of network professionals at the internet and transport layers

physical layer

Ethernet standards are set at the ________.

switch: route

For cost reasons, you should ________ where you can, ________ where you must.

Network part subnet part host part

Hierarchical IPv4 addresses consist of 3 parts (a group of bits) that locate a host in progressively smaller parts of the internet.

hierarchical

IPv4 addresses are____

entire packet minus the main header

In IPv6, the payload length gives the number of octets in the ________.

Network part

In a network mask, the 1s correspond to the

row

In a routing table, a ________ represents a route for a group of IP addresses.

use the decision it made for the first one

In decision cashing, when 20 packets arrive to the same destination IP address, the router will ________.

Layer 3 & 4 Standards

Internetworking is governed by

Commercial routers

Multiprotocol routers, which can route IP packets, IPX packets, SNA packets, AppleTalk packets, and other minor types of packets.

Interfaces

Router connectors and their electronics are called _____ Also known as router ports

transport layer

TCP/IP standards are set at the ________.

mesh

The Internet is organized in a ________.

network masks

The bits in the network parts of the mask are 1s, and the remaining bits are 0s

subnet mask

The bits of both the network and the subnet parts are 1s, and the remaining bits are 0s.

none of the above

The hop limit field in IPv6 corresponds to the ________ field in IPv4 a - header checksum b - length c - protocol d - none of the above

the ability to support more hosts

The main benefit of IPv6 over IPv4 is ________.

Network part

The part of an IP address that identifies the host's network on the Internet

Subnet part

The part of an IP address that specifies a particular subnet within a network.

Ports

The physical input/output interfaces to the networking hardware (Switch connectors and their electronics are called)

selecting the best-match row

The second step in the routing process involves ________.

32

The total length of an IPv4 address is ________ bits.

Ethernet switching table

There is a row for each host address in a(n) ________.

Masks

Tools that routers use to allow them to tell the sizes of key parts because the sizes of the network, subnet, and host parts differ.

increases routing time

Using a header checksum field to check for errors ________.

routing

When routers forward incoming packets closer to their destination hots

IPv6 (Internet Protocol version 6)

Which has a better system for handling options beyond the main header?

We have run out of them.

Which is a problem with IPv4 addresses?

border router

connects an organization's information system to the internet

Internal Router

connects different subnets within a network