Lesson 1: Understanding Local Area Networking

1. You have a key network administrator leave a company. Therefore, what does the company depend on to continue to use the network?

a) the user’s password

b) Active Directory

c) master network switch

d) network documentation

d) network documentation

2. What is the most common central device used today to connect computers to a network?

a) hub

b) switch

c) SOHO router

d) VPN router

b) switch

3. What is the most common adapter or connector used to connect a computer to a wired network?

a) RG6

b) RG58

c) RJ45

d) RJ8

c) RJ45

. Which of the following does a switch use for increased performance?

a) simplex

b) half duplex

c) full duplex

d) sliding duplex

c) full duplex

5. What do you use to isolate a group of computers within your organization?

a) WLAN

b) WAN

c) VLAN

d) Internet

c) VLAN

6. What do you use to create VLANs

a) router

b) switch

c) firewall

d) proxy server

b) switch

8. Which topology is the most redundant and the most expensive?

a) star

b) ring

c) mesh

d) bus

c) mesh

9. What standard describes CSMA/CD?

a) 801.2

b) 802.3

c) 802.5

d) 802.11

b) 802.3

10. What mechanism do wireless networks use to access the network?

a) CSMA/CD

b) CSMA/CA

c) token passing

d) polling

b) CSMA/CA

11. What model promises the most processing power?

a) centralized computing

b) distributive computing

c) switching computing

d) dumb computing

b) distributive computing

12. Which model users a central database for authentication?

a) peer-to-peer

b) workgroup

c) client/server

d) distributive

c) client/server

13. What type of server does Active Director run on?

a) file server

b) print server

c) database server

d) network controller

d) network controller

14. Which model has each host have their own security database?

a) peer-to-peer

b) client/server

c) distributive

d) sliding

a) peer-to-peer

15. What type of communication is sent to a single designated host?

a) unicast

b) broadcast

c) multicast

d) anycast

a) unicast

16. What is used to uniquely identify a host on a TCP/IP network?

a) IP address

b) MAC address

c) bit pattern

d) router name

a) IP address

17. A _________ is a single computer or device that connects to a TCP/IP network.

host

18. What is the central device used in wireless LANs?

wireless access point

19. What is the difference between a switch and a hub?

A hub allows only one device to communicate to another device at a time. If two devices try to communicate at the same time, a collision will result. A switch allows multiple conversations to occur at the same time. In addition, a switch also supports full-duplex, which means that a computer or host can send and receive at the same time.

20. What command do you use to test the TCP/IP stack on a computer?

ping localhost (or ping 127.0.0.1 or ping loopback)

Lesson 2: Defining Networks with the OSI Model

1. What model is used to describe how data communication occurs between hosts?

a) server-centric model

b) workgroup model

c) peer-to-peer model

d) OSI reference model

d) OSI reference model

2. Which layer in the OSI model do MAC addresses and switches use?

a) Physical

b) Data Link

c) Network

d) Transport

b) Data Link

3. Which layer in the OSI model covers routing between networks?

a) Physical

b) Data Link

c) Network

d) Transport

c) Network

4. Which layer in the OSI model is used to verify that data was delivered without error?

a) Physical

b) Data Link

c) Network

d) Transport

c) Network

5. Which layer in the OSI model covers HTTP, FTP, and RDC?

a) Physical

b) Session

c) Application 

d) Presentation

c) Application

6. Which layer of the OSI model is used to create a connection so that a host can transfer files?

a) Physical

b) Session

c) Application 

d) Presentation

b) Session

7. Which layer of the OSI model includes VLANs?

a) Physical

b) Data Link

c) Network

d) Transport

b) Data Link

8. Which protocol do you use as the transport protocol for a video application?

a) TCP

b) UDP

c) FTP

d) RDC

b) UDP

9. Which port categories include inbound ports of HTTP, HTTPS, FTP, and DNS?

a) well-known ports

b) registered ports

c) dynamic ports

d) private ports

a) well-known ports

10. What layer in the OSI model is responsible for logging on and off?

a) Physical

b) Session

c) Application

d) Presentation

b) Session

11. What layer in the OSI model is used to encrypt data?

a) Physical

b) Session

c) Application

d) Presentation

d) Presentation

12. Which layer in the OSI model includes the cable and network adapters?

a) Physical

b) Session

c) Application

d) Presentation

a) Physical

14. Which layer in the OSI model is included in the TCP/IP model?

a) Physical

b) Data Link

c) Transport

d) Application

c) Transport

15. Which protocol is used to translate IP addresses to MAC addresses?

a) RARP

b) ARP

c) DNS

d) WINS

b) ARP

16. What ports are defined above 49,152?

a) well-known ports

b) registered ports

c) dynamic ports

d) sliding ports

c) dynamic ports

17. A layer 3 switch is similar to a __________.

router

18.TCP/IP and IPX/SPX are known as _________ stacks

protocol

19. What is the advantage of UDP over TCP?

UDP has less overhead, which allows for faster performance

20. What are the seven layers found in the OSI model, in order?

Physical, Data Link, Network, Transport, Session, Presentation, and Application