Question 1.
You are working as a technician at ITCertKeys.com. You have just finished updating the system on a workstation, but the workstation seems to have become unstable.

Which of the following will allow you to return the system to the original state?

A. Boot in safe mode and re-install the system from NTBACKUP.
B. Restore the system from a known working restore point.
C. Boot from the Last Known Good configuration.
D. Determine recent changes as recorded in the System Information application.

Answer: B

Explanation: 
System Restories a component of Microsoft's Windows Me, Windows XP and Windows Vista operating systems that allows for the rolling back of system files, registry keys, installed programs, etc., to a previous state in the event of a failure.

Question 2.
You are working as a technician at ITCertKeys.com. You are asked to see if you can optimize the performance of the computers in the computer lab. 

Which of the following should you schedule to run at a regular interval in order to optimize system performance in the computer lab? (Select THREE).

A. backup of data
B. run a registry backup program
C. deletion of temporary files
D. defragment the hard drive
E. run MSCONFIG
F. run anti-spyware/malware program

Answer: C, D, F

Explanation: 
Backing up data or registry entries will not speed up a computer as the backup will not change anything on the computer itself. But a backup might be a good idea before doing any other performance raising tasks. MSConfig, or System Configuration Utility, is a system configuration utility bundled with all Microsoft Windows operating systems released after 1995 except Windows 2000. Windows 2000 users can download the utility separately, however. This tool modifies which programs run at startup, edits certain configuration files, and simplifies controls over Windows services.

Question 3.
You are working as a technician at ITCertKeys.com. A user that is working with layout needs a printer that is directly connected to his computer in order to preview prints before sending them to reproduction. The user is sending quite large printouts to the printer and is concerned about the data transfer rate between the computer and the printer. 

Which of the following provides the fastest interface for printing from his workstation?

A. USB 2.0
B. Bluetooth
C. IEEE 802.11g
D. IEEE 802.11b

Answer: A

Explanation: 
USB 2.0 can handle speeds up to 480 Mbit/s. A version 1.2 Bluetooth device can handle speeds up to 1 Mbit/s. IEEE 802.11b and IEEE802.11g is for wireless Ethernet networks and can handle maximum 11Mbit/s respectively 54 Mbit/s

Question 4.
You are working as a senior network technician at ITCertKeys.com. You are learning a trainee about different kinds of broadband. When you come to broadband delivered over satellite you tell the trainee about the delay that occurs when communicating over satellites. 

What is this delay called?

A. impedance.
B. attenuation.
C. latency.
D. echo.

Answer: C

Explanation: 
Communications latency is the time taken for a packet of data to be sent from one application, travel to, and be received by another application. This includes transit time over the network, and processing time at the source and the destination computers. Specifically, this is the time for encoding the packet for transmission and transmitting it, the time for that serial data to traverse the network equipment between the nodes, and the time to get the data off the circuit.

This is also known as "one-way latency". A minimum bound on latency is determined by the distance between communicating devices and the speed at which the signal propagates in the circuits (typically 70-95% of the speed of light). Actual latency is much higher, due to packet processing in networking equipment, and other traffic.

Question 5.
You are working as a network technician at ITCertKeys.com. You are installing a Wireless LAN at a branch office. The WLAN will comply to the IEEE 802.11g standard. A user at the branch office wants to know what the maximum connection speed of the wireless connection will be. 

What will you answer him?

A. 24 Mbps
B. 54 Mbps
C. 15 Mbps
D. 11 Mbps

Answer: B

Explanation: 
802.11g works in the 2.4 GHz band (like 802.11b) but operates at a maximum raw data rate of 54 Mbit/s, or about 19 Mbit/s net throughput (identical to 802.11a core, except for some additional legacy overhead for backward compatibility). 802.11g hardware is fully backwards compatible with 802.11b hardware. Details of making b and g work well together occupied much of the lingering technical process.

Question 6.
You are working as a network technician at ITCertKeys.com. You are asked to install a Wireless LAN at a branch office. 

In order to tighten security, which of the following default settings should be changed on the access point? (Select TWO).

A. SSID
B. MAC address
C. Infrastructure mode
D. DHCP addressing
E. password

Answer: A, E

Explanation: 
Most manufacturers has a default SSID and user/password combination on all access points that leave their factory. These SSID's and passwords are easily obtainable from internet and will be a hole in the security unless changed.

Question 7.
You are working as a network technician at ITCertKeys.com. You have been sent to a branch office to upgrade their network. You install a wireless access point that also acts as a router and DHCP server. 

Which of the following information needs to be configured on the computers with WLAN capabilities in the branch office in order for them to access the network?

A. IP address
B. default gateway address
C. WEP or WPA encryption key
D. SSID

Answer: D

Explanation: 
The SSID and in some situations also a PSK (Pre Shared Key) for encryption is needed in order to connect to the wireless access point.

Question 8.
HOTSPOT
Where on the following exhibit would you insert Random Access Memory (RAM)? 
Answer:

 Explanation: 
On an ATX motherboard, the RAM expansion slots are located at 90° to the ISA and PCI expansion slots. They can also be identified by their retaining clips.

References:
David Groth and Dan Newland, A+ Complete Study Guide (2nd Edition), Sybex, Alameda, CA, 2001, pp. 63-72.

Question 9.
Which of the following components on the motherboard usually house the IDE connectors?

A. PCI bus.
B. North Bridge.
C. ISA bus.
D. South Bridge.

Answer: D

Explanation: 
The South Bridge is generally used for slower devices such as USB ports, IDE drives, and ISA slots.

Incorrect Answers:
A: The PCI bus is a sort of bridge between the processor and ISA bus.
B: The North Bridge is generally used for high-speed interface cards, such as video accelerators, Synchronous RAM (SRAM), and memory.
C: The ISA bus does not house the IDE connectors.

Reference:
James G. Jones and Craig Landes, A+ Exam Cram 2 (2nd Edition), QUE Publishing,
Indianapolis, 2003, p. 80.

Question 10.
HOTSPOT
Where on the following exhibit would you insert Central Processing Unit (CPU)?

 Answer:
 
Explanation: 
The CPU is usually white in color, square shaped, has a retaining level and a number of pins.

References:
David Groth and Dan Newland, A+ Complete Study Guide (2nd Edition), Sybex,
Alameda, CA, 2001, pp. 63-72.

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