CompTia A+ Q and A Test #1

A crossover cable would normally be used in a 100BaseT network to connect __________.

You would need a crossover cable if you were creating a direct connection between two computers. Incorrect Answers: You would not use a crossover cable if you were using a switch or hub.

A user has not received any new e-mails on his smartphone in the last two days. The user is able to access the Internet without any problems. Which of the following should the user do first?

"Have you tried turning it off and on again?" Sometimes restarting a device can solve unexpected problems. Incorrect Answers: If the problem persists after a restart, you might try to reset the e-mail settings. Syncing the phone probably won't solve the problem. An OS update would be the last resort, especially since phone OS updates are pretty rare, so your phone probably doesn't have one available.

The network connection in Shirley's new office doesn't work. What tool would enable a tech to find the specific network cable for Shirley's office inside the wiring closet?

A Fox and Hound, or toner probe and tone generator, enables you to locate specific network cables. Incorrect: Neither a multimeter nor cable tester enable you to locate a specific cable. A wire puller, or fish tape, enables cable installers to run new wires through conduits.

Which of the following symptoms is most indicative of a bad sensor on a laser printer?

A paper jam error with no jammed paper is a clear sign of a faulty sensor. Incorrect Answer: Paper picked up in twos and threes is indicative of too much moisture in the paper. Blank pages are most likely due to nothing more than low toner. Spontaneous printer reboots, just like with PCs, points to a bad power supply.

James has replaced the CPU and added some RAM to his PC. He also blew some of the dust out of his system using canned air. When he rebooted his system, an annoying repetitive beep occurred. What was wrong?

A repetitive beep suggests a RAM problem. Incorrect Answers: Each motherboard manufacturer has their own beep codes, but only the RAM beep code is continuous

Which of the following is the most important item Tim should check to make sure he buys an AC adapter that will work with his laptop at his home? ​ Make sure the household power plug on the AC adapter matches Tim's power outlets.

AC adapters come with a bewildering number of DC power connecters (the plug that goes into your laptop). Incorrect Answers: The other answers are less important than the DC power connector or not important at all.

Virtually all home routers today are configured using: ​

Almost all home routers use a web interface. Incorrect Answers: There may be some that use telnet or even their own keyboard and mouse, but the BEST answer is web interface.

Wearable technology devices used to track personal activity use what technology to determine user activity levels? ​ Inverter

An accelerometer is a device that detects its own acceleration and is used in mobile phones to determine the phone's orientation. Once the orientation is determined, the phone's software can react accordingly, such as by changing its display from portrait to landscape. Incorrect Answers: An inverter is an electronic device that changes current. A gyroscope is a disk that is free to spin on any orientation by itself. A digitizer is a device that is used to convert analog signals into digital signal

A computer with an IP address of 143.75.125.1 most likely has a subnet mask that looks like which of the following?

Any IP address with a starting number from 128 through 191 is almost certainly the old Class B which always has a subnet range of 255.255.0.0. Incorrect Answers: 255.0.0.0 is a Class A subnet. 255.255.255.0 is a Class C subnet. 0.0.0.0 is a invalid address. Note: 0.0.0.0 is a totally valid address for routers. It's called a default route. Don't worry about that term for now, but I bet you can't wait for Network+!

You want to repair a failed on-board video card by installing a new PCIe card. What is the first step you should take before installing the new PCIe card

Before replacing an onboard video card, you should disable the onboard VGA card. Incorrect Answers: You may next be required to uninstall the old driver, but first consult the installation guide for the new video card to see what your next step should be. You are not using multiple monitors. The video RAM is irrelevant.Note: On modern systems, this is done automatically.

What should you check first after a user reports a BSOD, even though her computer seems to be running fine after a reboot? ​

Check Device Manager first. A driver error can cause a BSOD. Updating drivers is easy with this tool. Incorrect Answers: Event Viewer could also be helfpful, especially if you suspect a software issue. Performance Monitor gives an overrall sense of how well a computer is running. Disk Management is a tool for partitioning and formatting drives.If the customer had reported a S.M.A.R.T. error, this would tell you if a drive is dying.

Which of the following optical media: a) is capable of multiple rewrites and b) has the largest capacity? ​ DVD DS (Double-Sided)

DVD-RW discs offer decent capacity (4.37 GB) and multiple rewrites. Incorrect Answer: BD-R discs have more capacity than DVD of any flavor, but do not support multiple rewrites. Blu-Ray refers to a movie disc, not a rewritable disc. A double-sided disc doesn't provide enough information to tell whether it's a writable or rewritable standard.

What does ECC DRAM provide that non-ECC DRAM does not?

ECC DRAM enables error checking and correcting. Incorrect Answers: The other answers are made up and not true.

The person responsible for maintaining the company's laser printer is out of the office. You are told to service the laser printer. Which part of the printer should you avoid touching and why? ​

Fuser. One of its two rollers is a heated roller. The fuser is the only component that is hot to the touch. Incorrect Answers: Laser. While the beam is very hot to the touch, you can't access it. And even if you could, it is not powerful enough to hurt you. Toner. The toner gets to a boiling point. The toner can be messy, but also will not hurt you. Paper tray. Smudge prints cause paper jams. The paper tray is completely safe to touch.

Johan needs to finish a presentation before his plane lands, but the underside of his laptop is scorching his legs. What should he do?

Laptops need a flat, smooth surface for proper airflow. Incorrect Answers: Nothing, all laptops are warm on the bottom. Most laptops get a little warm, but he shouldn't be burned by one! Ask the flight attendant for a pillow. A pillow is the last thing his laptop needs. Put the laptop into sleep mode. This would cool it down, but then he couldn't finish his work.

Someone has placed a CMOS password on a computer and has forgotten the password. What should you do?

Most motherboards have a labeled Security or Password jumper. Removing or moving the shunt for a few seconds clears any CMOS passwords. Incorrect Answers: You will not be able to enter CMOS if you don't have the password. Holding down the CTRL key while booting won't clear the CMOS password. You won't be able to boot to anything if you can't get past CMOS.

Which of the following devices is probably the safest and easiest to hot-swap on a PC?

Nothing, not even a modular drive, beats USB for hot-swap ease and safety. Incorrect Answers: Either USB device might be easily swapped, but you could lose data on a USB hard drive if you didn't close any open files first. A mini-PCI NIC would not be hot-swappable, nor would a PS/2 mouse.

A user who travels a lot wants 24/7 Internet access on her laptop. Which of the following would you recommend for her connection?

Of the choices given, only cellular WANs have the ability to provide 24/7 Internet access virtually anywhere she goes that has cell reception. Incorrect Answers: The other three options have a very limited range compared to cellular WANs and would not be as effective.

What is the correct boot sequence for a PC?

Power good, CPU, POST, boot loader, operating system

What aspect of a regular vacuum cleaner makes it unsafe to use inside a laser printer?

Regular vacuum cleaners generate a tremendous amount of static electricity. Incorrect: Too much power, vibration, or voltage would not make the vacuum unsafe inside a laser printer, unless it was powerful enough to start sucking up pieces of the printer itself!

You install a second video adapter and monitor on your Windows PC, but when you start the system, the second monitor doesn't display anything. You've confirmed that the video driver is correct, and that the video card is active in Device Manager. What else do you need to do?

Tell the OS that you want to use two monitors by checking the Extend my Windows desktop onto this monitor checkbox in Display properties. Incorrect Answers: There is no Multiple Monitor configuration applet. Windows 10 Pro is not required for a dual-display setup. The reinstallation of Windows is not needed.

A technician troubleshoots a broken PC only to find that a strong burning odor is coming from inside the case. Which of the following parts most likely experienced a level of electrical burn?

The power supply unit (PSU) is the most likely thing to experience electrical burn. Incorrect Answers: Although other components could experience electrical burn, the question asked for the most likely to experience electrical burn.

Which of the following options gives the best brief summary of RAID?

The whole purpose of RAID is to increase drive performance and data redundancy. Incorrect Answers: None of the other answers adequately describe RAID.

One of the network printers is producing copies where the toner is smeared on paper after printing. What component should be checked?

Thermal and laser printers use a fuser to heat the toner to a melting point. Once melted, the toner will fuse with the fibers of the paper. Incorrect Answers: A maintenance kit is a kit of replacment parts. It may assist in the repair, but it is not a component. The paper output tray is only used once the printing process is complete. It will not effect the print job. The print spooler is a software based program that schedules print jobs; it does not effect the actual printing.

Which of the following URLs would indicate a secured HTTP server?

Web sites using SSL use "HTTPS://" instead of just "HTTP://" to show that they are secured. Incorrect Answers: HTTPSSL is not real.HTTP://WWW.WHEEBO.COM -S won't work because of the "-S". HTTP://SECURE/WWW.WHEEBO.COM is just a messed up URL.

Which program is the best choice to use to clear the SSL cache?

While there's more than one way to access Internet Options, of the choices given, only Internet Explorer is viable. Incorrect Answers: The other three options do not let you clear the SSL cache.

New smart phones have features that enable them to be backed up to a remote location. Of which of the following is this an example?

iCloud is an example of a remote backup solution for iOS mobile devices. Incorrect Answers: Desktop Manager is synchronization software for Blackberry devices. iOS is the operating system running on Apple mobile devices. App Market is a made-up term.

Which of the following is a private IP address?

10.1.1.1 is a private IP address. There are three private IP address ranges: Class A: 10.X.X.X Class B: 172.16.X.X - 172.31.X.X Class C: 192.168.X.X

What wireless standard can operate at speeds of up to 150 Mbps?

802.11 n has a maximum speed of up to 600 Mbps. Incorrect Answers: 802.11 a and g have a maximum speed of 54 Mbps. 802.11 b has a maximum speed of up to 11 Mbps.

802.11g uses the _______ radio band and transmits at a maximum speed of ______ .

802.11g uses the 2.4GHz radio band and transmits at a maximum speed of 54Mb/sec. Incorrect: 2.4GHz, 11Mb/sec is 802.11b. 5GHz, 11Mb/sec. This answer is made up. 5 GHz, 54Mb/sec is 802.11a.

Which subnet mask is used with a Class B address? ​ 255.255.255.0

A Class B subnet mask is 255.255.0.0. Incorrect: 255.0.0.0 is a Class A subnet mask. 255.255.255.0 is a Class C subnet mask. 255.255.255.255 is the last Class E address.

How many pins does a DDR2 DIMM have?

A DDR2 DIMM has 240 pins. Incorrect: DDR2 SO-DIMMs have 200 pins, DDR DIMMs have 184 pins, and SDR DIMMS use 168 pins.

Quincy's laser printer keeps giving "Out of memory" errors. He needs very high quality prints. What should he do?

Adding more printer memory will quickly fix this problem. Incorrect Answers: Reducing the resolution or printing in black and white might solve the memory issue, but would compromise the print quality. Printers don't have page files.

In general, how should a person install a stick of RAM on a desktop?

All current desktop RAM gets inserted straight down into the slot. You must apply even pressure along the entire stick. Incorrect Answers: Installing the RAM at a 45 degree angle might break or damage the stick of RAM. Installing the RAM from one end to the other might break or damage the stick of RAM. The ZIF socket is for CPUs, not RAM.

The on-screen display of a monitor indicates the proper video source is selected, but the image will not display. Which of the following issues are the MOST likely reasons? (Select TWO).

Always review the basic connections of your system when setting it up. Connectivity is the easiest thing that can cause a problem. Incorrect Answers: A low brightness setting will not cause the image to not display. Bad backlighting may cause a bad image, but will not cause the image to not display. Improper contrast settings will not cause the image to not display.

You set up all Windows 10 systems with TCP/IP and DHCP automatic addressing. One of the machines cannot connect to the network. You check its IP address with IPCONFIG and find that it has an address of 169.254.12.124. All the other machines in the network are working fine and you have confirmed that there are no cabling problems. How did this machine get this IP address, and what does it tell you?

Automatic Private IP Addressing (APIPA) is generated by Windows and enables a computer to automatically assign an IP address if the Dynamic Host Configuration Protocol sever is not present. If the DHCP server is unavailable, the computer assigns itself an IP address in the range of 169.254.0.0 - 169.254.255.255. Incorrect Answers: Windows remembers the last IP address assigned and is trying to use that address. This might be true if automatic addressing was disabled and you were using a static IP address. This IP address indicates that someone manually assigned the address. It could have been manually assigned, but because it is in the range of what APIPA assigns, it would be better to assume otherwise. Windows does not need an IP address to boot.Very true, but also an absurd answer to this question.

What is BSOD? How do you troubleshoot it?

BSOD stands for blue screen of death. When there is some fault in OS or hardware then Windows can't run the program and gives a blue screen with a code. To resolve this problem the best way is to reboot the system. If it doesn't work than boot the system in the safe mode.

Janice calls the tech support line and reports that she can't hear any music from her computer. She says she was able to listen fine last week. Which of the following should you check? (Select two.)

Check to see if she has muted the sound or the speakers. Also, check to see if the sound driver is installed correctly. Incorrect Answers: Speakers won't be on any Hardware Compatibility List from Microsoft. The sound card might be, though. There really isn't anything called a SPDIF driver. Not having enough hard drive space won't effect the ability to play sound. It will, however, inhibit your ability to download music and videos that have sound.

Which type of flash memory card is the oldest?

CompactFlash is the oldest type of flash memory card. Incorrect: Memory Stick is Sony's proprietary memory format. Secure Digital cards are the most common type of flash memory cards used today. SmartMedia came out as a competitor to CompactFlash, but is no longer used in newer devices.

A power supply +12 VDC output has dropped to +11.5 VDC. What should you do?

Do nothing, as the slight drop is acceptable. Most power supplies will still operate acceptably down to around +/-11 VDC. Incorrect Answers: Replacing the power supply with a lower wattage unit might cause other issues, especially if the system needs more wattage than it provides. Replacing the power supply with a higher wattage unit wouldn't hurt, but it's not necessary, either. Checking the capacitors is a made up answer and is incorrect.

Which of the following symptoms is indicative of a misconfigured BOOT.INI file?

Error at boot: "Windows could not start." BOOT.INI's main job is to point to a valid copy of Windows, usually stored in a folder called \WINNT or \WINDOWS. If BOOT.INI doesn't point out a valid copy, this is the error you'll get. Incorrect Answer: Error at boot: "NTLDR is missing." Your Master Boot Record points to NTLDR. If there's a problem with the MBR, if it's corrupt or if the boot order is incorrect, then you'd get this error. Error at boot: "No boot device present". This happens when the BIOS is pointing to a drive that has no bootable partitions.Windows boots into Safe Mode only. While many issues may cause this to happen, if you're able to boot into Safe Mode, you have a bootable copy of Windows and your BOOT.INI is fine.

A technician installed a second hard drive in a computer. Upon restart, a message appears stating, "Primary drive 0 not found. Press F1 to continue." Which of the following should the technician check first?

Error messages after a drive installation is a good sign that you might have installed the drive improperly. Incorrect Answer: A newly-installed drive wouldn't have NTLDR or boot.ini on it. A computer that can't find its hard drive won't be able to boot into Safe Mode. If everything's installed properly, then you'd check the boot settings in BIOS. But not first.

FTP (File Transfer Protocol) uses which of the following TCP/IP Protocols and ports

FTP uses TCP by default, with ports 20 and 21. Incorrect Answers: The other answers are not the correct protocol and ports.

Peter's computer at the bakery keeps overheating. What should he do until he can install a better cooling system? ​

Get that computer out of the oven! Seriously though, simply move it into another room. Explain to Pete that a good heatsink and fan (active cooling) may help the overheating. Incorrect: Opening the side of the case would ruin the airflow of his system. Faster CPUs usually generate more heat than slower CPUs. If you change the temperature warning in CMOS, you are likely to have a much bigger problem that could result in letting the smoke out of the computer. Don't forget to have a Class C fire extinguisher handy!

Albert is assembling a new PC from parts. When asked if he needed thermal compound, he glanced at his parts and said, "No." Why would Albert say such a thing?

His heat sink and fan come with thermal compound pre-applied on the bottom of the heat sink. It's common for fans to come this way. Incorrect: All CPU-fan combinations on a modern PC require thermal compound. No heatsinks come with thermal compound pre-applied on the top of the heatsink.

Wireless network hardware that complies with IEEE 802.11g operates in the ______ frequency range.

IEEE 802.11g runs in the 2.4-GHz range and has a top data transfer speed of 54 Mbps. Incorrect Answers: 5 GHz is used by 802.11a and 802.11n. 54 Mbps and 11 Mbps are data transfer speeds.

If a technician has just replaced a laptop's motherboard due to video issues, what should he do first if the speakers stop working?

It's very likely that the speakers simply didn't get hooked up correctly. Incorrect Answers: Video drivers probably won't have much to do with sound issues. Don't replace the speakers before making sure that they're hooked up properly. Due to the way laptop hardware works, the replacement motherboard is probably the exact same as the old motherboard.

A user installed a net SOHO router and new wireless NICs to increase his network's transmission speed from 802.11b to 802.11g. He didn't change the router from the manufacturer's default settings. The user lives in an apartment building and is still experiencing a slow Internet connection after the installations. Which of the following is the most secure option that a technician could implement to resolve this issue? ​

It's very likely that the user's neighbors are stealing his Wi-Fi and slowing down his network. Enabling MAC filtering so that only the user's devices can join the network will keep his obnoxious neighbors at bay. Incorrect Answers: Hiding the SSID is a good idea, but a tech-savvy neighbor would still be able to join the user's network. Static IP addresses wouldn't help. Disabling the WAN port would mean that the user would be getting no Internet at all, which is the only thing worse than slow Internet. At least his neighbors would probably quit using his network.

In which of the following printers would you have to replace toner as part of printer maintenance?

Laser printers use toner to create an image on the paper. Incorrect Answers: Inkjet printers use ink. Thermal printers use a special type of heat-sensitive paper to create images. Impact printers physically strike the paper to leave a mark.

If a port on a network switch does not have anything plugged into it, what should the link lights on the port look like? ​

Link lights either on a NIC or in a switch should never be lit when not connected. Incorrect Answers: If the lights were lit in any way without anything plugged in, that would indicate a defective port.

Kenneth has an 802.11n network. He only wants his three computers in the house to be able to access this network. Which of the following technologies would best enable him to do this?

MAC filtering. MAC filtering creates allow or deny lists based on MAC addresses. Incorrect: WPA is a form of encryption. There is no such thing as WPA filtering. Filtering by TCP/UDP port number does not block particular systems. Many firewalls have the ability to filter ports based on IP address or MAC address using an Access Control List (ACL), but this isn't to be confused with pure port blocking. A Demilitarized Zone (DMZ) is used to expose certain systems to the Internet. It does not limit access to wireless clients.

The link light on the NIC of Rob's desktop normally glows yellow, but when he moved the PC to a construction trailer and plugged it in, it glowed green. The PC and networking run well, but Rob is confused about the color change. What could cause this?

Many multispeed NICs show their connection speed by the color of the link light. Incorrect: The PC is working fine, so it's not network activity or an inability to access the Internet. It might be dirt, but that's a bit silly

As you're helping a user configure her e-mail over the phone, she remarks that the IP address is different than it was when she checked last week. This surprises her, since she didn't make any changes to her TCP/IP configuration. The user has had no problems running her web browser. You immediately know that:

Only DHCP clients can change IP addresses dynamically. Incorrect Answers: If her IP address changed, then it is not static. The default gateway is not the issue if there is no problem browsing the Internet. Internet Explorer has no connection to the TCP/IP configuration.

A user wants to extend his computer's storage capacity with external devices. Which of the following storage standards would allow the user to utilize storage externally?

Only the eSATA and IEEE 1394 standards allow for external devices. Incorrect Answers: EIDE is an internal drive connnection. SATA is an internal drive connnection. PATA is an internal drive connnection.

A company needs complete ownership of its data, but wants the flexibility of the cloud. They have found a third-party vendor to help manage storage and maintain their ownership. Which of the following infrastructure types are they implementing?

Private is correct. A private cloud allows a security minded company to build an internal Iaas network in an onsite data center. They can contract a third party to maintain or host it, however they keep ownership and ability to collaborate the data. Incorrect Answers: Hybrid is incorrect as it allows a mix of public cloud services with private could services. It does not give complete ownership. Community is incorrect. This allows for several organizations that share a common concern to share the cloud solution. Public is incorrect.This cloud does not allow for complete ownership of the data, and is available to the general public.

What form factor of memory is found in laptops?

SO-DIMMs are a small form-factor type of RAM stick, found primarily in laptops and small desktops. Incorrect Answers: While SDRAM is often found in laptops, it isn't a form factor. RAMBUS is an outdated technology and is not found in laptops. DIMMs are found in desktop PCs.

If a device is hot-swappable, why should you use the Safely Remove Hardware Tool?

Safely Remove Hardware enables open files on the removable device to close. Incorrect Answers: The other answers are untrue and incorrect.

Which of the following components must be installed while a laptop is completely powered off? ​

To install SO-DIMM RAM chips into a laptop, you must turn the laptop off. Incorrect Answers: PCMCIA cards, Express cards, and USB hubs can all be installed while the laptop is running.

The main advantage of a DVD-RW disc over a CD-RW disc is _________________.

The DVD-RW has a much greater storage capacity than a CD-RW. Incorrect Answers: They are the same size and the roughly the same cost, and just as widely available

You want to equip yourself with FRUs for a laptop. What would you take with you? (Choose two.)

The HDD and RAM are very easy to replace and are considered laptop field replaceable units (FRUs). Incorrect Answers: Video cards, NICs, and SD card readers are usually integrated into the laptop's motherboard and are not considered FRUs.

Ellen's laptop has a built-in 802.11n-capable wireless NIC. The wireless NIC worked perfectly yesterday when she loaned it to her nerdy friend Tom. Today, she cannot access the Internet via her wireless NIC. The NIC is not visible in Network Connections nor is it visible in Device Manager. What should she assume first?

The NIC is disabled in CMOS. Granted, this is not a common problem, but of the options listed, it's the only one that would absolutely prevent the NIC from showing up in Device Manager. Incorrect Answer: In most cases, a hardware failure will not prevent a NIC from showing up in Device Manager. While there's no hard and fast rule here, a device with a hardware switch will still show up in both Device Manager and, in the majority of cases, in Network Connections as well. Disabled devices are still visible in Device Manager.

Sam sent a print job to the printer, can see it is the only one in the queue, but it is not printing. What can be done to try to get it to print? ​

The Print Spooler shows up in the System Tray for all actively printing jobs. Open it and restart the print job. Incorrect Answer: There is no delete option available from the Print Spooler. Shutting off/disabling the printer would not help print. There is no Print Spooler icon in the Control Panel.

SSL Cache

The SSL cache. The SSL cache is used to store session IDs for SSL sessions between clients and CICS ®. Reusing these session IDs allows CICS to perform partial handshakes with clients that it has previously authenticated.

A user on your network complains that his mouse is acting erratically. The pointer moves in the direction the user points, but it jumps and skips. What is the most probable cause? (Select two.) ​

The connection is loose or the mouse is dirty. Dirty mice are notorious for the jumping effect caused by dirt and dust wrapped around their rollers. The connection is loose or the mouse is dirty. A loose connection or the wrong mouse drivers can also cause the mouse to act erratically. Incorrect Answers: Button overcharge. No such thing. Static electricity. Static is not a known symptom of a jumpy mouse.

A stand-alone printer will print a test page just fine, but it makes gobbledy-gook out of your term paper. What's probably wrong? ​

The driver that is installed is probably incorrect or corrupted. That will produce a print-out that is all messed up, while printing directly from the printer itself works just fine. Incorrect Answers: The fact that the test page works shows that the printer is working fine and has toner. A missing printer interface would keep the print job from getting to the printer completely.

What use does the function (Fn) key on a keyboard serve?

The function (Fn) key, most common on laptops, is a generic key used to add a number of different keystroke capabilities to your keyboard, such as video output switching and turning wireless on/off. However, there is no fixed standard for the specific uses of this key. Incorrect: The other answers are possible functions of the Fn key (in combination with others) but are not the specific function of the Fn key.

What component is in charge of powering an LCD screen?

The inverter provides power to an LCD screen. Incorrect Answers: PCMCIA cards are used as expansion slots on laptops. Backlights are also powered by the inverter. PCIe is a type of expansion slot, and has nothing to do with powering LCD screens.

Which of the following cables is NOT used for networking computers?

USB cables are not used to network computers together. They are used to connect a computer to a peripheral such as a mouse or keyboard. Note: There are USB cables that exist in the world that have a small electronic circuit box in the middle of the cable that will allow you to connect two computers together. But that is a super special instance and the answer that I listed in the choices didn't say anything about it being that type of cable. Incorrect Answers: Shielded Twisted Pair (STP) and Unshielded Twisted Pair (UTP) are the some of the most common ways of connecting computers together in a network. Plenum UTP cable is a type of network cabling that is suitable for being installed in air ducts or plenums.

Tom walks into the accounting department and walks into a mess! User A can't access the Internet, User B has forgotten her password, User C's system is overheating to the point of smoking and the administrator is worried there might be a virus on all the systems. Whose system should he address first?

Users C's system is about to start on fire! Everything else can wait! Incorrect Answers: The other problems are not as important.

The benefit of MAC filtering in wireless networking is that the network:

Using MAC filtering can keep out some unwanted users. Incorrect Answers: MAC filtering does not encrypt or hide a wireless network, and it doesn't force you to use static IP addresses.

An older network needs to labeled to show where each network connection terminates in a patch panel. Which of the following tools would be BEST for the technician to identify the connections?

When a cable is plugged into a tone generator, it sends a tone through the cable that can be detected through a receiver called a probe. The probe can be pointed at each cable on the switch. When the probe touches the cable that is plugged into the tone generator, the tone can be heard through the probe. Incorrect Answers: An RJ-45 loopback plug is used to test the connection, not to find a cable. A punchdown tool is used to insert wire into a patch panel. A cable tester can only test a cable for electrical connection.

How often should you reapply thermal compound on your CPU?

You never reapply thermal paste as a maintenance issue! Once it's on, you don't need to touch it again unless you remove the CPU fan. Incorrect Answers: The other answers should not be mistaken for being correct. They are, in fact, incorrect.

You upgrade your network to 1000 Mbps from 100 Mbps. You install a new 1000-Mbps network adapter into your Windows system. You check the device manager and see no errors or warning. You configure the TCP/IP settings to be as they were for the previous network adapter. Upon restarting the computer, you cannot access the network. You ping your IP address locally and receive the error message, "Request timed out." You then ping 127.0.0.1 and receive the same error message. What do you do?

You tried to ping 127.0.0.1, which is the loopback address, as well as your local IP address and received the same error messages both times. This would indicate a faulty NIC in your workstation. Incorrect Answers: Nothing was changed about the cables, so that would not be the problem. Typically driver problems result in an error message during installation, so it's not the drivers. Also, you checked the device manager and everything was OK. Modern NICs can auto-negotitiate for speed, so setting it to run at 100 Mbps wouldn't really do much.

When installing a new point of sale printer, which of the following will you most likely need?

You'll need to install drivers so that the computer can communicate with the printer. Incorrect Answer: RJ-11 is a cable connector for a phone. Operating system disk may have drivers, however it is not likely for it to have a manufacturer specific driver. RG-58 is a coaxial cable for RF connection.

Where would you first go on a system to configure Wake on LAN (WOL)?

Your first step is to enable WOL in CMOS, then go to Device Manager. Incorrect: There is nothing to do in the command prompt and there is no such thing as a "WOL jumper."