IT Essentials Chapter 6

15. What is the proper CIDR prefix notation for a subnet mask of 255.0.0.0?

/8

21. A device has been assigned the IPv6 address of 2001:0db8:cafe:4500:1000:00d8:0058:00ab/64. Which is the host identifier of the device?

1000:00d8:0058:00ab

31. How many bits are used to represent the OUI part of the MAC address of a NIC card?

24

33. How many bits are used to represent a MAC address?

48

26. How many bits are used to represent the host address of a computer with the IP address of 192.168.1.25 and a subnet mask of 255.255.255.0?

8

27. How many bits are used to represent the host address of a computer with the IP address of 192.168.1.25 and a subnet mask of 255.255.255.0?

8

28. How many bits are used to represent the host address of a computer with the IP address of 192.168.1.25 and a subnet mask of 255.255.255.0?

8

16. Which command is used from the Windows command prompt to schedule a program to run at a specific time?

AT

7. Port triggering has been configured on a wireless router. Port 25 has been defined as the trigger port and port 113 as an open port. What effect does this have on network traffic?

All traffic that is sent out port 25 will open port 113 to allow inbound traffic into the internal network through port 113.

4. A network technician is checking a computer to see if the DHCP client is working correctly. The technician issues the ipconfig /all command. Which two parameters should the technician review? (Choose two.)

default gateway subnet mask

25. How many bits are used to represent an IPv6 address?

128

29. How many bits are used to represent the network address of a host with an IP address of 192.168.150.16 and a subnet mask of 255.255.0.0?

16

30. How many bits are used to represent the network address of a host with an IP address of 192.168.150.16 and a subnet mask of 255.255.0.0?

16

3. What is the minimum amount of RAM and hard drive space required to install 64-bit Windows 8 on a PC?

2 GB RAM and 20 GB hard disk space

22. Which IPv6 address represents the most compressed form of the IPv6 address 2001:0db8:cafe:0000:0835:0000:0000:0aa0/80?

2001:db8:cafe:0:835::aa0/80

14. What is the correct compressed format of the IPv6 address 2001:0db8:eeff:000a:0000:0000:0000:0001?

2001:db8:eeff:a::1

23. A user reports to a technician that his computer freezes without any error messages. What are two probable causes? (Choose two.)

An update has corrupted the operating system. The power supply is failing.

14. What preventive maintenance action should be taken to help improve system security?

Automate any antivirus scanners.

19. What is a common step that a technician can take to determine the cause of an operating system problem?

Boot into Safe Mode to determine if the problem is driver related.

19. An administrator deploys wireless access points across the office to provide wireless network connectivity to users. Each workstation receives an IP address via DHCP. After a file server with a static IP is connected to the wired network, the administrator receives an IP address conflict message. What is a possible solution?

Change the static IP configured on the file server.

13. A technician needs to use an application that is not supported by Windows operating systems on the PC. How can the technician make this application run on the PC?

Create a virtual machine with an operating system that supports the application.

11. Which network protocol is used to automatically assign an IP address to a computer on a network?

DHCP

9. The current IP configuration of a small company is done manually and is time-consuming. Because of increased network growth, a technician needs a simpler way for IP configuration of workstations. Which service would simplify the workstation IP configuration task?

DHCP

2. A wired network is undergoing several changes that could leave it vulnerable to connection by unauthorized devices while the work is in progress. Which two temporary measures would enable the authorized devices to continue to have network access but prevent unauthorized devices from connecting? (Choose two.)

Disable DHCP. Assign static IP addresses to the authorized devices.

18. Which two Windows utilities can be used to help maintain hard disks on computers that have had long periods of normal use? (Choose two.)

Disk Cleanup Disk Defragmenter

23. After having talked to the customer, a network technician suspects that an invalid IP address is the most likely cause of a network issue. Which step of the troubleshooting process does this represent?

Establish a theory of probable cause.

5. Which Windows utility allows Windows 7 and 8 users to quickly and easily share files and folders?

HomeGroup

10. What are two advantages of using PC virtualization? (Choose two.)

It allows multiple operating systems to run on a single PC simultaneously. It can provide cost savings.

4. After upgrading a computer to Windows 7, a user notices that the UAC (User Account Control) panel appears more frequently. How can the user reduce the frequency with which the UAC appears?

Lower the UAC setting in the Change User Account Control settings dialog box of the User Accounts control panel.

24. Which filtering method uses the physical address to specify exactly which device is allowed or blocked from sending data on a network?

MAC address filtering

8. Which Windows tool allows an administrator to organize computer management tools in one location for convenient use?

Microsoft Management console

2. Which feature in Windows 7 and 8 allows a user to temporarily view the desktop that is behind open windows by moving the mouse over the right edge of the taskbar?

Peek

6. Which Windows administrative tool displays the usage of a number of computer resources simultaneously and can help a technician decide if an upgrade is needed?

Performance Monitor

18. Multiple users report that the workstations are assigned a 169.254.x.x IP address. The users are able to communicate only between each other. What is a possible solution?

Restart the DHCP server.

17. When troubleshooting a printer problem, a technician finds that the operating system was automatically updated with a corrupt device driver. Which solution would resolve this issue?

Roll back the driver.

15. Which Windows 7 feature would an administrator use to configure a computer to delete temporary files from the hard drive at 3:00 AM each day?

Task Scheduler

21. A user reports that logging into the workstation fails after a display driver has been updated. The user insists that the password is typed in correctly. What is the most likely cause of the problem?

The Caps Lock key is set to on.

13. A group of users is unable to connect to the network. When testing several of the PCs and issuing the command ipconfig, the technician notices that all of them have an IP address in the 169.254.x.x range. What is the most likely cause of this problem?

The DHCP server is not operational.

35. A group of users is unable to connect to the network. When testing several of the PCs and issuing the command ipconfig , the technician notices that all of them have an IP address in the 169.254.x.x range. What is the most likely cause of this problem?

The DHCP server is not operational.

6. A user can print to a printer that is on the same network, but the traffic of the user cannot reach the Internet. What is a possible cause of the problem?

The PC default gateway address is missing or incorrect.

3. What two default wireless router settings can affect network security? (Choose two.)

The SSID is broadcast. A well-known administrator password is set.

24. A technician is trying to fix a Windows 7 computer that displays an "Invalid Boot Disk" error after POST. What is a possible cause of the error?

The boot order is not set correctly in the BIOS.

5. A technician is troubleshooting a problem where the user claims access to the Internet is not working, but there was access to the Internet the day before. Upon investigation, the technician determines that the user cannot access the network printer in the office either. The network printer is on the same network as the computer. The computer has 169.254.100.88 assigned as an IP address. What is the most likely problem?

The computer cannot communicate with a DHCP server.

8. A PC is not able to connect to a wired network. Pinging the loopback address is successful, but the gateway cannot be reached. On the network switch all the interface lights are on, except for the interface connected to the PC. The LED on the network card is off. What is the most likely cause of this problem?

The network cable is faulty.

20. A workstation has been moved from the first floor to the fifth floor within an organization. The user is now reporting that the workstation cannot connect to the network. A technician suspects that the workstation could not obtain an IP address from a DHCP server. What is a possible cause of the problem?

The workstation has been configured with a static IP address.

1. Users in a recently installed wireless network are complaining of slow data transfer and frequent loss of connectivity. The technician checks that the wireless security is correctly implemented, and there is no evidence of unauthorized users on the network. Which two problems might the technician suspect? (Choose two.)

There is interference from outside sources. The wireless signal is too weak.

7. Which type of startup must be selected for a service that should run each time the computer is booted?

automatic

9. To which category of hypervisor does the Microsoft Virtual PC belong?

Type 2

22. A user reports that a video editing program does not work properly after a sound mixing program is installed. The technician suspects that a compatibility issue might be the cause of the problem. What should the technician do to verify this theory?"

Uninstall the sound mixing software.

11. A college uses virtualization technology to deploy information security courses. Some of the lab exercises involve studying the characteristics of computer viruses and worms. What is an advantage of conducting the lab exercises inside the virtualized environment as opposed to using actual PCs?

Virus and worm attacks are more easily controlled in a virtualized environment, thus helping to protect the college network and its devices from attack.

20. Which question is an open ended question that could be used when helping a customer troubleshoot a Windows problem?

What programs have you installed recently?

12. A software engineer is involved in the development of an application. For usability tests, the engineer needs to make sure that the application will work in both Windows 7 and Windows 8 environments. The features and functions must be verified in the actual OS environment. The engineer is using a Windows 7 workstation. What two technologies can help the engineer achieve the usability tests? (Choose two.)

dual boot client-side virtualization

12. What security technique could provide secure access to a server located in a small office without the expense of implementing a DMZ or purchasing a hardware firewall?

implement port forwarding

10. A technician troubleshooting a network problem has used CLI commands to determine that a computer has not been allocated a correct IP address from the DHCP server. Which command can the technician use to solve this problem?

ipconfig/renew

17. Which network server is malfunctioning if a user can ping the IP address of a web server but cannot ping the web server host name?

the DNS server

16. A technician is configuring the channel on a wireless router to either 1, 6, or 11. What is the purpose of adjusting the channel?

to avoid interference from nearby wireless devices

1. What would be a reason for a computer user to use the Task Manager Performance tab?

to check the CPU usage of the PC