ITSP 136 A+ CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Exam Cram Chapters 13-16
Which motherboard form factor measures 12 inches x 9.6 inches (305 mm x 244 mm)? microATX SATA ATX mITX
ATX
What is the transfer rate of DDR4-2133? 17,066 MB/s 19,200 MB/s 21,333 MB/s 25,600 MB/s
17,066 MB/s
How much data can a SATA Revision 3.0 drive transfer per second? 50 MB/s 90 MB/s 1969 MB/s 6 Gb/s 16 Gb/s
6 Gb/s
Which of the following connectors would you use to power a video card? 24-pin power 8-pin PCIe Molex 3.5-mm TRS
8-pin PCIe
Which of the following peripherals should a company use to take inventory quickly and update the price tags for products? Label printer Barcode scanner AR headset Magnetic reader KVM switch Flatbed scanner Select 2 answers
Barcode scanner Magnetic reader
Which of the following BIOS/UEFI settings are used to prevent USB drop attacks? Boot password BIOS time/date Secure Boot SAN settings
Boot password
You are attempting to load an operating system from a USB flash drive at computer startup. Which of the following settings should you modify in the BIOS? Enable a BIOS password Boot sequence Enable TPM Disable TPM
Boot sequence--- also known as the BOOT ORDER or BOOT PRIORITY - and place the removable media first. However, if the drive is brand new and blank, you still might be able to boot from the removable media, even if it is not first on the list. This will depend on the system, but essentially, the BIOS will see that the drive is blank and move on to the next boot media on the list. Keep in mind that you might boot to removable media with an operating system for other reasons than installing the OS (for example, recovering an existing system). --- Enabling a password is not necessary, but there should be a password. If there is, you need to know it to access the BIOS. If there is not a password, you should create one while you are there. ---TPM (Trusted Platform Module) deals with the encryption of data on the storage drive and should be enabled or disabled before an operating system is installed; it won't have any bearing on the boot sequence.
You have an application that sends large amounts of data over the network to a server and requires a network connection that can handle as much as 600 Mbps. Which of the following network cables meets that requirement at the lowest price point? Cat 3 Cat 5 Cat 5e Cat 6
Cat 5e
As you are building a new PC, you notice that the motherboard has eight DIMM sockets that are labeled 0 through 7. Four of them are gray, and the other four are a darker shade of gray. Which of the following should be performed first? Install the memory into the gray slots. Install the memory into the dark gray slots. Install the memory into slots 0 through 3. Fill all the slots with memory. Consult the motherboard documentation.
Consult the motherboard documentation.
A desktop computer (named workstation22) can't connect to the network. A network card was purchased without documentation or driver discs. Which of the following is the best way to install the network card driver? Purchase the disc online and install the drivers. Run Windows Update to install the driver. From the desktop computer (workstation22), download and install the driver. Copy the driver to a flash drive and install it.
Copy the driver to a flash drive and install it. You need to go to another computer, download the driver from the manufacturer's website, copy that to a flash drive, and bring it back to the affected computer.
Which type of cable can connect a computer to another computer directly? Straight-through Crossover 568A SATA 568B
Crossover
A technician has installed dual-inline memory modules that each have 288-pins and use 1.1 V. What kind of RAM has the tech installed? DDR4 DIMMs DDR3 DIMMs DDR4 SODIMMs DDR5 DIMMs
DDR5 DIMMs --Although DDR4 modules do have 288 pins, the architecture is different, and the voltage ranges between 1.2 and 1.35 V. --DDR3 has 240 pins and common voltages of 1.2 or 1.5 V. --Laptops use small-outline dual-inline memory modules --SODIMMs). Two common types of SODIMMs in laptops are DDR3 (which has 204 pins) and DDR4 (which has 260 pins).
Which of the following memory technologies enables protection against random inconsistencies when storing data? Quad-channel Parity Dual-channel ECC RAID 5
ECC (error correction code) memory can detect and correct common types of data corruption. It is often used in servers. It is not typically installed in desktops but might be used if data corruption cannot be tolerated. It provides for error correction and, therefore, protection while storing data in RAM Parity support in RAM means that the memory can detect errors, but it cannot correct them the way ECC does. Dual-channel RAM uses two 64-bit data channels at the same time. RAID 5 is not a memory technology;
Which feature of RAM is used to solve memory errors? ECC SODIMM Non-parity DDR4 Dual-channel
Error Correction Code (ECC) memory can detect and correct errors. Non-ECC (more common) does not detect or correct errors. (You might also see this referred to as "error-correcting code. --Parity memory is used for error detection but not error correction --SODIMMs are used by laptops. --DDR4 is a type of RAM that may or may not include ECC technology. --Dual-channel means that you can have two sticks of RAM working together. For example, with DDR4, this would create a 128-bit bus.
Which of the following cable types should be used to connect a cable modem to a SOHO router? Ethernet Coaxial Thunderbolt USB
Ethernet
Which of the following cable types should be used to connect a cable modem to a SOHO router? Coaxial Ethernet USB Thunderbolt SATA
Ethernet --Use an RG-6 coaxial cable to connect the cable modem to the coaxial jack. --USB cables can be used to connect a plethora of devices to PCs, laptops, and mobile devices or can be used to charge devices (depending on the type of USB cable). --Thunderbolt can be used to transmit data to devices or video to displays. --SATA cables are used to connect storage drives to a motherboard.
Which connector is used for cable Internet? LC F-connector Direct burial RJ45 DE-9
F-connector--Cable Internet connections use RG-6 coaxial cable (usually) with an F-connector on the end. --LC is a type of fiber optic connector. --Direct burial is a type of cable that you can purchase for underground installations. --RJ45 is the connector used on twisted pair patch cables. --DE-9 (or DB-9) is a serial connector used with RS-232 connections.
You have been tasked with running a network extension to the warehouse that is 50 meters (164 feet) away. The proposed path will take the network extension near several fluorescent light fixtures and a large electric motor. Your manager says that budgeting is not an issue. What type of cable would be best for this environment? Unshielded twisted-pair Coaxial Fiber optic Shielded twisted-pair
Fiber optic
To implement a Secure Boot process, which device should be listed first in the Boot Device Priority screen? Network CD-ROM USB Hard drive
Hard drive
What do the POWER LED, POWER SW, and HDD LED plugs connect to on the motherboard? Headers SATA 7-pin PCIe slots 24-pin ATX port
Headers
A customer wants to control several computers with a single set of input devices. What solution should you provide for them? Barcode reader Smartcard reader Ethernet switch KVM
KVM --KVM stands for keyboard, video, and mouse. A KVM is a switch that enables the connection of one keyboard, monitor, and mouse. However, the KVM has connections for several computers, which can be selected by pressing a button on the KVM.
Which of the following types of storage media can hold the most data? Blu-ray LTO DVD-ROM SD card
Linear Tape Open (LTO) backup tapes can hold more data than any of the other answers. With storage capacities in the terabytes (TB), LTO can hold much more than the other solutions.
Which component supplies power to the CMOS when a computer is off? Lithium battery POST Power supply BIOS/UEFI
Lithium battery
Which of the following best describes a specification for accessing storage while using PCI Express? NVMe 7200 RPM Hot-swappable 3.5-inch and 2.5-inch
NVMe Essentially, the M.2 slot on a motherboard taps into the PCI Express bus x4) and uses a portion of the total bandwidth associated with that bus.
You are building a high-performance workstation. You are required to select a boot drive with the highest performance available. Which of the following is the best option? NVMe 15K rpm HDD MicroSD USB flash
NVMe (Non-Volatile Memory Express) - for example, an M.2 drive. This technology can transfer the most data and provides the highest performance of the listed answers.
Which type of cable needs to be fire resistant? STP Coaxial Plenum UTP Direct burial
Plenum
You have been hired to install a network cable in a crawl space that runs the length of a hallway. You are required to meet fire code specifications. Which of the following types of cable should you run? Shielded Coaxial Fiber Plenum
Plenum-- has a special outer covering that will not burn (or will not burn as quickly as other cable) in a fire. It should be used in areas that cannot be accessed by a fire suppression system --Shielded cable (for example, shielded twisted pair, or STP) is used to reduce electromagnetic interference (EMI). It does not meet fire code for plenum areas. Unless specified as plenum rated, --coaxial cable will not work, especially because you are running a network cable (which implies twisted pair cable). Fiber optic cable is a high-speed cable but by default is not rated for plenums.
Which of the following is enabled in the BIOS/UEFI that will prompt a user to enter a password every time the laptop performs a POST? Administrative password Windows password One-time password Power-on password
Power-on password --This is an extra level of protection before the system boots to the operating system that is loaded on the laptop.
Which of the following technologies allows for a 256-bit-wide bus? ECC Quad-channel Virtual RAM Task Manager
Quad-channel quad-channel memory architecture can allow for a 256-bit-wide bus (64-bit per channel). However, this will only be the case if all four channels have memory installed to them
You have been tasked with configuring two drives for maximum performance. Which of the following RAID types should you select? RAID 0 RAID 1 RAID 5 RAID 10
RAID 0 provides for the striping of data over two or more drives. The main purpose of RAID 0 is to increase performance compared to using a single drive.
Which level of RAID stripes data and parity across three or more disks? RAID 0 RAID 1 RAID 5 Striping RAID 10
RAID 5 stripes data and parity across three or more disks. --RAID 0 does not stripe parity; it stripes data only and can use two disks or more. --RAID 1 uses two disks only. --Striping is another name for RAID 0. --RAID 10 contains two sets of mirrored disks that are then striped.
You need to describe RAID to a nontechnical customer. Which of the following is the best description to use for this customer? RAID stands for redundant array of independent disks. RAID utilizes multiple disks to increase performance and/or enable protection against data loss. RAID is a dynamic disk management system. RAID uses striping to reduce the amount of storage drive write time and utilizes parity bits to reconstruct the data from a failed drive.
RAID utilizes multiple disks to increase performance and/or enable protection against data loss.
Which of the following is the most common type of networking connector used in a PC's network interface card? RJ11 F-connector ST RJ45
RJ45 RJ11 is the connector used by landline-based phones (POTS connections) and DSL connections in households. --The F-connector is a type of coaxial connector used for cable TV and cable Internet connections. -- ST stands for straight tip, and it is a type of fiber optic connector that is not common on a PC's network interface card.
You are troubleshooting a RAID 6 array on a high-end computer. Two drives have their fault lights on. What is the best action for you to take? Reseat the drives, back up the data, and then replace the drives. Reseat the drives and monitor the RAID status over a few days. Replace the failed drives and verify the RAID array rebuilds completely. Replace the failed drives and restore the data from a known good backup.
Replace the failed drives and verify the RAID array rebuilds completely. The beauty of RAID 6 is that it can rebuild data even if two drives fail.
Which of the following uses a 7-pin data connector and a 15-pin power connector? VGA IDE SATA Molex Cat 6
SATA --VGA ports have 15 pins that are used to transmit video signal. --An older IDE hard drive cable has 40 pins. --Molex is a power connection that has 4 wires. --Category 6 (Cat 6) cable is twisted pair cable that has 8 pins (wires).
Which type of cable would you use if you were concerned about EMI? Plenum rated UTP STP Coaxial
STP (shielded twisted pair) is the only cable listed here that can reduce electromagnetic interference. However, fiber optic cable is another good choice
You need to run a diagnostic program by booting to a USB flash drive on a laptop running Windows. You modify the boot order in the UEFI/BIOS and set it to the flash drive first. However, the laptop still boots into Windows. What do you need to adjust to boot to the USB flash drive? Secure Boot TPM UEFI/BIOS password Virtualization
Secure Boot--uses encryption in conjunction with operating systems such as Windows to make sure that only a particular operating system will boot. Secure Boot blocks devices from booting from external media such as bootable USB sticks or optical discs
Which cable type would be suitable for longer distances, such as connecting two cities? Coaxial Twisted pair Multimode fiber Single-mode fiber
Single-mode fiber --used for long distances such as in a city Coaxial is common for connections between utility poles and houses/buildings. Twisted pair is common in LANs. Multimode cables have a larger core diameter than single-mode cables. Multimode is the more commonly used fiber optic cable in server rooms and for making network backbone connections between buildings in a campus.
Which of the following is a chip that stores encryption keys? Intel VT Secure Boot Firmware TPM
TPM-- Trusted Platform Module (TPM), a chip that stores encryption keys and can be enabled in the BIOS/UEFI. Intel Virtualization Technology (VT) is part of the firmware that supports the use of virtualization software such as Hyper-V and VMware. Secure Boot can block rootkits and other malware from launching boot loaders that have been tampered with. Firmware (such as a motherboard's BIOS/UEFI) should be updated, or "flashed," periodically to take advantage of the latest functionality and security updates.
A technician has just installed additional RAM into a Windows-based graphics-intensive workstation to meet software application requirements. What should the technician do next to ensure that the correct amount of RAM is installed and that it is working properly? (Select the two best answers.) Increase the size of the paging file. Test the RAM. Go to Settings > System > About. Press down with both thumbs until the ears lock. Select 2 answers
Test the RAM. Go to Settings > System > About.
A technician attempts to install a DDR5 module into a motherboard, but it doesn't appear to fit. Which of the following are possible reasons for this? (Select the two best answers.) The motherboard doesn't allow DDR5 memory. Windows doesn't allow DDR5 memory. The RAM stick is being installed backward. The BIOS/UEFI hasn't been updated. Select 2 answers
The motherboard doesn't allow DDR5 memory. The RAM stick is being installed backward.
Memory was added to a workstation. When the computer was booted, it reported memory errors. Which of the following is the most likely cause of this problem? A different brand of memory was installed into bank two. The second memory stick was larger than the first. The second memory stick was smaller than the first. The new memory was installed in the second bank and runs at a lower speed than bank one.
The new memory was installed in the second bank and runs at a lower speed than bank one. --For multiple memory sticks to be compatible, they need to run at the same speed. You might be able to get away with one stick being one step slower, if the motherboard supports it, and as long as it is not dual-channel memory. But it isn't worth the chance. If the sticks are not compatible, or if the second stick is not compatible with the motherboard, you will probably get memory errors during POST.
A school classroom is set up with removable drives to train students in various versions of Windows. One student tells you that one of the computers will not boot up and receives an error: "no operating system found." All of the cables are plugged in securely to the computer. Which of the following is the most likely cause of this problem? The monitor is not functioning. The removable drive is not locked. The lab network is down. The memory is not seated properly.
The removable drive is not locked.
You need to make a high-speed connection to an external storage device that can handle 40 Gbps. Which of the following is the best solution? USB 3.2 Thunderbolt HDMI Cat 6a
Thunderbolt
Which of the following ports can be used for audio, video, and storage? Thunderbolt DisplayPort HDMI DVI
Thunderbolt can use all three forms of data transfer DisplayPort and HDMI can transfer audio and video data but are not used for storage. DVI is used for video only.
A fully functional touchscreen monitor for a PC requires a video connection and a power connection. Which of the following is also required? SAS connection USB connection Ethernet connection Audio connection
USB connection
You have been tasked with connecting a newer Android smartphone to an external TV so that you can display the CEO's smartphone screen during a meeting. Which of the following adapters would typically be the best solution? Micro-USB to HDMI Micro-USB to DVI USB-C to DVI USB-C to Ethernet USB-C to HDMI
USB-C to HDMI -use USB-C to HDMI. If it is a newer Android smartphone, then chances are it will have a USB-C port. If you are attempting to connect it to a TV, HDMI is the most likely port to use. Micro-USB is used with some mobile devices, but newer devices (especially Android devices) have switched to USB-C. --You wouldn't want USB-C to DVI because TVs normally don't have DVI inputs. --USB to Ethernet helps convert from a computer or mobile device to the Ethernet network. These devices can ultimately allow a device or computer with a USB port to access the Internet. This wired connection might be favored over wireless for its speed, quality connection, and low latency.
Which of the following cable types is prone to EMI? Fiber optic STP UTP Multimode
UTP (unshielded twisted pair (UTP) cable is prone to electromagnetic interference (EMI). --Fiber optic cable is not prone to EMI because it uses light as the medium instead of electricity. --Multimode cable is a type of optical fiber. --STP stands for shielded twisted pair, and as the name indicates, it incorporates an aluminum shield around the wires to prevent EMI.
A customer complains that an important disc is stuck in the system's Blu-ray drive. What should you recommend to the customer? Get a screwdriver and disassemble the drive. Format the disc. Use a paper clip to eject the tray. Dispose of the drive and replace the media.
Use a paper clip to eject the tray.
Which of the following cable types would most likely experience degraded video signal quality over long distances? VGA HDMI DVI DisplayPort
VGA ---is an older standard that outputs analog signals to a monitor. Of the listed answers, it is the most susceptible to signal degradation.
You are attempting to install Hyper-V on a Windows computer. However, you receive an error saying that the software cannot be installed. Which of the following CPU characteristics should be checked? Number of cores Virtualization support Hyper-Threading Cache size
Virtualization support --You need to check whether the CPU has virtualization support enabled in the UEFI/BIOS. If it is not enabled, Windows will not allow the installation of Hyper-V to continue. You may receive an error message, or Windows might simply have a grayed out area where you want to select Hyper-V in Programs and Features
You need to connect external peripherals to a typical PC. Which of the following connector types will allow you to do this? (Select the two best answers.) SATA SAS EIDE eSATA USB 3.0 Select 2 answers
eSATA USB 3.0
