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

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

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

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

a) simplex

b) half duplex

c) full duplex

d) sliding duplex

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

a) WLAN

b) WAN

c) VLAN

d) Internet

6. What do you use to create VLANs

a) router

b) switch

c) firewall

d) proxy server

7. What zone is used to publish external websites for an organization?

a) intranet

b) exanet

c) internetwork

d) DMZ

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

a) star

b) ring

c) mesh

d) bus

9. What standard describes CSMA/CD?

a) 801.2

b) 802.3

c) 802.5

d) 802.11

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

a) CSMA/CD

b) CSMA/CA

c) token passing

d) polling

11. What model promises the most processing power?

a) centralized computing

b) distributive computing

c) switching computing

d) dumb computing

12. Which model users a central database for authentication?

a) peer-to-peer

b) workgroup

c) client/server

d) distributive

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

a) file server

b) print server

c) database server

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

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

a) unicast

b) broadcast

c) multicast

d) anycast

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

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

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

wireless access point

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?