[单项选择] Computers on a small network are not able to receive new addresses from the DHCP server. However, the administrator has checked the server and ensured it is connected, responding, and functional. Which of the following is the MOST likely problem in this scenario?（）
A. The DHCP server has an incorrect gateway configured.
B. The DHCP server was incorrectly configured with a six hour lease time on addresses.
C. The DHCP server was incorrectly configured with no-expiring lease time on addresses.
D. The DNS server is no longer functional and internal name-address resolution is down.

[单项选择]Computers on the network are frequently infected with viruses, malware, worms and Trojans.Which of the following should Mike, a technician, update automatically to prevent future problems?（）
A. Antivirus signatures
B. Antivirus engines
C. Malware engines
D. Virus encyclopedias

[单项选择]All client computers on your company network were recently migrated from Windows XP to Windows 7. Employees use Internet Explorer 8. Each time employees access a Web application, they are prompted to install an add-on. After each installation, the application restarts and prompts the employees to install the add-on again. You need to ensure that employees can run the application. What should you do?（）
A. Use a script to install the add-on in Windows XP Mode.
B. Use a script to run the application in Windows XP Compatibility Mode.
C. Add the class identifier of the add-on to the Add-on list in Group Policy.
D. Set the Deny all add-ons unless specifically allowed in the Add-on list Group Policy setting to Disabled.

[单项选择] customer wants to network several computers within a large warehouse. The warehouse has one computer at the very far end of the warehouse that is 170 meters (557 feet) from the network switch. Which of the following cable types should a technician use for this computer?（）
A. CAT3
B. CAT5
C. CAT6
D. Fiber

[单项选择]All client computers on your company network run Windows 7 and are members of a Windows Server 2008 R2 domain. The R&D department staff are local administrators on their computers and are members of the R&D global security group. A new version of a business software application is available on the network. You plan to apply an AppLocker security policy to the R&D group. You need to ensure that members of the R&D group are not allowed to upgrade the software. What should you do?（）
A. Create an Audit only restriction based on the version of the software.
B. Create an Audit only restriction based on the publisher of the software.
C. Create an Enforce rule restriction based on the version of the software.
D. Create an Enforce rule restriction based on the publisher of the software.

[单项选择]Your company network has 500 client computers that run Windows 7. Your team consists of 20 desktop support technicians. Two technicians troubleshoot a hardware-related performance issue on a computer. The technicians obtain different results by using their own User Defined Data Collector Sets. You need to create a standardized Data Collector Set on a network share that is accessible to your team. What should you create?（）
A. Event Trace Data Collector Set
B. Performance Counter Data Collector Set
C. Performance Counter Alert Data Collector Set
D. System Configuration Information Data Collector Set

[单项选择]When computers are connected on a network in a manner where the data flows to a central pointand then back out describes which of the following networks?（）
A. Ring
B. Mesh
C. Star
D. Hybrid

[单项选择]A network at a small business utilizes a star topology and is experiencing frequent collisionsamong data packets. Which of the following devices is MOST likely being used?（）
A. Unmanaged switch
B. Hardware firewall
C. Hub
D. Managed switch

[单项选择] A network technician is installing a small wireless network. A requirement is that individual users must authenticate using usernames and passwords. Which of the following technologies would support users authenticating with encrypted usernames and passwords?（）
A. WPA TLS
B. WPA PEAP
C. 64-bit WEP
D. 128-bit WEP

[单项选择]A company has a small network,consisting of a single switch and a single router.The switch has been configured with two vlans,and route-on-a-stick is being configured on the router for inter-vlan routing.A trunk is configured to connect the switch to the router.What is the minimum number of router subinterfaces that are required for all the vlans to communicate?（）
A. one
B. three
C. two
D. zero

[单项选择] Your network contains computers that run either Windows Vista (x86) or Windows 7 (x86). All computersare joined to a domain. You install a computer named Computer1 that runs Windows 7 (64-bit). You share aprinter named Printer1 on Computer1. You need to ensure that any user can automatically download andinstall the drivers for Printer1.  What should you do from Printer Properties?（）
A. Install a new driver.
B. Enable bidirectional support.
C. Modify the Additional Drivers settings.
D. Assign the Manage this printer permission to the Domain Users group.