Objectives Upon completion of this chapter, you will be able to answer the following questions: • What is the need for routing? • How do routers use tables? • How do you build a fully connected network? Key Terms This chapter uses the following key terms. You can find the definitions in the Glossary. Default…
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What Did I Learn in this Module? – 100-150 Exam Guide
• MAC and IP—Sometimes a host must send a message, but it only knows the IP address of the destination device. The host needs to know the MAC address of that device. The MAC address can be discovered using address resolution. There are two primary addresses assigned to a device on an Ethernet LAN: •…
Broadcast Domains – 100-150 Exam Guide
When a host receives a message addressed to the broadcast address, it accepts and processes the message as though the message was addressed directly to it. When a host sends a broadcast message, switches forward the message to every connected host within the same local network. For this reason, a local area network, a network…
Destination on Remote Network
When the destination IP address (IPv4 or IPv6) is on a remote network, the destination MAC address will be the address of the host default gateway (i.e., the router interface). In Figure 13-2, PC1 wants to send a packet to PC2. PC2 is located on remote network. Because the destination IPv4 address is not on…
The ARP Process – 100-150 Exam Guide
Objectives Upon completion of this chapter, you will be able to answer the following questions: • What is the difference between the roles of the MAC address and the IP address? • Why it is important to contain broadcasts within a network? Key Terms This chapter uses the following key terms. You can find the…
Gateways to Other Networks Summary
The following is a summary of each topic in the chapter and some questions for your reflection. What Did I Learn in this Module? (12.3.1) • Network Boundaries— Every host on a network must use the router as a gateway to other networks. Therefore, each host must know the IPv4 address of the router interface…
Routers as Boundaries Between Networks
The wireless router acts as a DHCP server for all local hosts attached to it, either by Ethernet cable or wirelessly. These local hosts are referred to as being located on an internal, or inside, network. Most DHCP servers are configured to assign private addresses to the hosts on the internal network, rather than internet…
Gateways to Other Networks – 100-150 Exam Guide
Objectives Upon completion of this chapter, you will be able to answer the following questions: • What are network boundaries? • What is the purpose of Network Address Translation in small networks? Key Terms This chapter uses the following key terms. You can find the definitions in the Glossary. Network Address Translation (NAT) Introduction (12.0)…
Dynamic Addressing with DHCP Summary
The following is a summary of each topic in the chapter and some questions for your reflection. What Did I Learn in this Module? (11.3.1) • Static and Dynamic Addressing—With a static assignment, the network administrator must manually configure the network information for a host. At a minimum, this includes the host IPv4 address, subnet…
DHCP Servers – 100-150 Exam Guide
If you enter an airport or coffee shop with a wireless hotspot, DHCP makes it possible for you to access the internet. As you enter the area, your laptop DHCP client contacts the local DHCP server via a wireless connection. The DHCP server assigns an IPv4 address to your laptop. Various types of devices can…