ch.one
introduction to networking
Summary
■ Networks provide a way to share equipment and data.
■ The three classifications of networks based on size, management, and use of
private or public communications systems are LAN, MAN, and WAN.
■ The four common network topologies are star, ring, bus, and mesh.
■ The methodology used to administer a client/server network is centralized
administration.
■ The methodology used to administer a peer-to-peer network is decentralized
administration.
■ A network operating system provides a communications system between nodes.
■ Data that is to be transmitted on a network is divided into segments.
■ A typical packet contains a data segment, source and destination address,
error checking, and sequence identification.
■ A protocol is a set of rules that controls communication between two nodes.
■ In general, two computers need to use the same protocol to communicate
with each other.
■ Link-Layer Discovery Protocol (LLDP) is designed to exchange information
between network devices in the same local area network.
■ A media converter is used to convert one type of electrical signal into
another type of electrical signal.
■ A repeater regenerates digital signals, allowing the network media to exceed
its recommended length.
■ A hub provides a central connection point for a network.
■ A gateway device provides a connection between the local area network and
the Internet.
■ A bridge is used to segment a larger network to reduce the chance of collisions.
■ A switch serves as a central connection point and can provide network
segmentation.
■ A router connects various networks together and provides a number of
alternate routes for a data packet to travel.
■ The OSI model serves as a guide for troubleshooting and designing networks.
■ Networks provide a way to share equipment and data.
■ The three classifications of networks based on size, management, and use of
private or public communications systems are LAN, MAN, and WAN.
■ The four common network topologies are star, ring, bus, and mesh.
■ The methodology used to administer a client/server network is centralized
administration.
■ The methodology used to administer a peer-to-peer network is decentralized
administration.
■ A network operating system provides a communications system between nodes.
■ Data that is to be transmitted on a network is divided into segments.
■ A typical packet contains a data segment, source and destination address,
error checking, and sequence identification.
■ A protocol is a set of rules that controls communication between two nodes.
■ In general, two computers need to use the same protocol to communicate
with each other.
■ Link-Layer Discovery Protocol (LLDP) is designed to exchange information
between network devices in the same local area network.
■ A media converter is used to convert one type of electrical signal into
another type of electrical signal.
■ A repeater regenerates digital signals, allowing the network media to exceed
its recommended length.
■ A hub provides a central connection point for a network.
■ A gateway device provides a connection between the local area network and
the Internet.
■ A bridge is used to segment a larger network to reduce the chance of collisions.
■ A switch serves as a central connection point and can provide network
segmentation.
■ A router connects various networks together and provides a number of
alternate routes for a data packet to travel.
■ The OSI model serves as a guide for troubleshooting and designing networks.
Review Questions
Answer the following questions on a separate sheet of paper. Please do not write in this book.
1. List some things that might be shared on a network.
2. What are the advantages of using a network?
3. What are the three classifications of networks based on the size and
complexity of the network system?
4. The Internet would be best described as a _____.
A. LAN
B. MAN
C. WAN
D. PAN
5. Rank by size, starting with the smallest: MAN, LAN, and WAN.
6. Six computers connected with a hub in your classroom would most likely be
classified as a(n) _____ network.
7. Your instructor has a computer that is connected to a powerful computer in
another building. This would most likely be a(n) _____ network.
8. What are the four major classifications of network topologies?
9. Define node and give two examples.
10. What does the term client mean in the context of a network?
11. Which type of administrative model uses centralized administration?
12. Name three types of dedicated servers.
13. How does a server differ from a typical PC?
14. Describe how data is transmitted across a network.
15. Data is divided into _____.
16. What does a packet contain?
17. What two versions of TCP/IP are used today?
18. Which Microsoft operating system first installed TCP/IPv4 and TCP/IPv6
by default?
19. Which protocol is designed to discover other devices on a local area network?
20. Which Microsoft operating system first introduced LLDP?
21. Link-Layer Discovery Protocol (LLDP) is designed to exchange information
between _____ in the same local area network.
22. List the layers of the OSI model starting at the application layer.
23. Which layer of the OSI model is mainly concerned with network cables and
connectors?
24. Convert the following acronyms into complete words.
A. MAU
B. LAN
C. MAN
D. WAN
E. ATM
F. LLDP
G. TCP/IP
H. IEEE
I. FIR
J. NIC
Answer the following questions on a separate sheet of paper. Please do not write in this book.
1. List some things that might be shared on a network.
2. What are the advantages of using a network?
3. What are the three classifications of networks based on the size and
complexity of the network system?
4. The Internet would be best described as a _____.
A. LAN
B. MAN
C. WAN
D. PAN
5. Rank by size, starting with the smallest: MAN, LAN, and WAN.
6. Six computers connected with a hub in your classroom would most likely be
classified as a(n) _____ network.
7. Your instructor has a computer that is connected to a powerful computer in
another building. This would most likely be a(n) _____ network.
8. What are the four major classifications of network topologies?
9. Define node and give two examples.
10. What does the term client mean in the context of a network?
11. Which type of administrative model uses centralized administration?
12. Name three types of dedicated servers.
13. How does a server differ from a typical PC?
14. Describe how data is transmitted across a network.
15. Data is divided into _____.
16. What does a packet contain?
17. What two versions of TCP/IP are used today?
18. Which Microsoft operating system first installed TCP/IPv4 and TCP/IPv6
by default?
19. Which protocol is designed to discover other devices on a local area network?
20. Which Microsoft operating system first introduced LLDP?
21. Link-Layer Discovery Protocol (LLDP) is designed to exchange information
between _____ in the same local area network.
22. List the layers of the OSI model starting at the application layer.
23. Which layer of the OSI model is mainly concerned with network cables and
connectors?
24. Convert the following acronyms into complete words.
A. MAU
B. LAN
C. MAN
D. WAN
E. ATM
F. LLDP
G. TCP/IP
H. IEEE
I. FIR
J. NIC