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Free CompTIA A+ 220-802 practice test, CompTIA A Plus 220 802 Test 2. This is a practice exam for IT professionals studying for the CompTIA A+ 220-802. A+ covers the fundamentals of computer technology, installation and configuration of PCs, laptops and related hardware, and basic networking.
Susan, a new user, was recently given a new company laptop. While traveling, Susan reports that her laptop shuts off whenever it is unplugged, even if the battery is 100% charged. Which of the following should the technician do?
Replace the battery
Enable APM in the BIOS
Change power settings to balanced
Replace the power adapter
The first step here should always be to try a new battery. Although the issue could possibly be more complicated than that, it is most likely a failing battery.
Which of the following is TRUE about the difference between a worm and a virus?
Worms are written into assembly while viruses are written with scripting languages.
Viruses disable the antivirus update service while worms kill the antivirus process.
Viruses hide in the boot record while worms hide within the file system.
Worms can self propagate without attaching themselves to a host program while a virus cannot.
Both worms and viruses have the ability to spread themselves and they both have malicious intent. They differ in that a worm is a standalone program while a virus has to attach itself to a host program.
A computer worm is a standalone malware computer program that replicates itself in order to spread to other computers. It often uses a computer network to spread itself, relying on security failures on the target computer to access it. It will use this machine as a host to scan and infect other computers. When these new worm-invaded computers are controlled, the worm will continue to scan and infect other computers using these computers as hosts, and this behaviour will continue. Computer worms use recursive methods to copy themselves without host programs and distribute themselves based on exploiting the advantages of exponential growth, thus controlling and infecting more and more computers in a short time. Worms almost always cause at least some harm to the network, even if only by consuming bandwidth, whereas viruses almost always corrupt or modify files on a targeted computer. Many worms are designed only to spread, and do not attempt to change the systems they pass through. However, as the Morris worm and Mydoom showed, even these "payload-free" worms can cause major disruption by increasing network traffic and other unintended effects.
Computer_worm - Wikipedia, the free encyclopediaA new company policy requires privacy screens for all computers in publicly accessible spaces. Privacy screens help protect against which of the following?
Shoulder surfing
Social Engineering
Spear phishing
Rootkits
A privacy screen (or privacy filter) is a device applied to a computer monitor to make it difficult to see the screen unless directly in front of the monitor. This provides limited protection against shoulder surfing.
In computer security, shoulder surfing is a type of social engineering technique used to obtain information such as personal identification numbers (PINs), passwords and other confidential data by looking over the victim's shoulder. Unauthorized users watch the keystrokes inputted on a device or listen to sensitive information being spoken, which is also known as eavesdropping.
Shoulder_surfing_(computer_security) - Wikipedia, the free encyclopediaA friend has come to you seeking help with a gaming PC he uses at home. He has replaced his monitor with a very large 1080p TV, but when he runs any games on the PC they appear much smaller and do not fit the entire TV screen. Which answer is most likely the problem?
The LCD TV response rate is not fast enough for gaming.
The games do not support a 1920×1080 resolution.
The PC games cannot be run to an external display.
The LCD TV driver is not supported by the Windows operating system.
Because your friend did not mention having issues until the games were opened, we can safely assume they are the culprit. Many games (especially older ones) cannot support large resolutions - but it really depends on the game.
Which of the following passwords is the MOST secure according to industry best practices?
SimpleAnswer1234
VeryStrongPassword
E@sy2Remember
thisisthecorrectanswer1
A good password can be defined in many different ways - however at a minimum it should contain letters, numbers, special characters and be at least 8 characters long.
Password strength is a measure of the effectiveness of a password against guessing or brute-force attacks. In its usual form, it estimates how many trials an attacker who does not have direct access to the password would need, on average, to guess it correctly. The strength of a password is a function of length, complexity, and unpredictability.Using strong passwords lowers the overall risk of a security breach, but strong passwords do not replace the need for other effective security controls. The effectiveness of a password of a given strength is strongly determined by the design and implementation of the authentication factors (knowledge, ownership, inherence). The first factor is the main focus of this article. The rate at which an attacker can submit guessed passwords to the system is a key factor in determining system security. Some systems impose a time-out of several seconds after a small number (e.g. three) of failed password entry attempts. In the absence of other vulnerabilities, such systems can be effectively secured with relatively simple passwords. However, the system must store information about the user's passwords in some form and if that information is stolen, say by breaching system security, the user's passwords can be at risk. In 2019, the United Kingdom's NCSC analyzed public databases of breached accounts to see which words, phrases, and strings people used. The most popular password on the list was 123456, appearing in more than 23 million passwords. The second-most popular string, 123456789, was not much harder to crack, while the top
Password_strength - Wikipedia, the free encyclopediaWhich of the following security best practices would prevent a program on a CD from immediately launching when inserted into a computer?
Disable autorun
MSCONFIG >Startup Tab
Rename the Administrator account
Disable the Guest account
The Autorun.exe file is automatically run when Windows reads a new CD. Disabling this function in Windows will keep CD's from opening up when inserted.
AutoRun and the companion feature AutoPlay are components of the Microsoft Windows operating system that dictate what actions the system takes when a drive is mounted. AutoRun was introduced in Windows 95 to ease application installation for non-technical users and reduce the cost of software support calls. When an appropriately configured CD-ROM is inserted into a CD-ROM drive, Windows detects the arrival and checks the contents for a special file containing a set of instructions. For a CD containing software, these instructions normally initiate installation of the software from the CD-ROM onto the hard drive. To maximise the likelihood of installation success, AutoRun also acts when the drive is accessed ("double-clicked") in Windows Explorer (or "My Computer"). Until the introduction of Windows XP, the terms AutoRun and AutoPlay were used interchangeably, developers often using the former term and end users the latter. This tendency is reflected in Windows Policy settings named AutoPlay that change Windows Registry entries named AutoRun, and in the autorun.inf file which causes "AutoPlay" to be added to drives’ context menus. The terminology was of little importance until the arrival of Windows XP and its addition of a new feature to assist users in selecting appropriate actions when new media and devices were detected. This new feature was called AutoPlay and a differentiation between the two terms was created.AutoRun, a feature of Windows Explorer (actually of the shell32 dll) introduced in Windows 95, enables media and devices to launch programs by use of command listed in a file called
AutoRun - Wikipedia, the free encyclopediaSocial engineering makes use primarily of which of the following techniques, to bypass common corporate security barriers?
Grayware installation
Worm transmission
Malware installation
Human interaction
Social Engineering is the process of manipulating another person or group of people to divulge information or perform actions relevant to a systems security.
In the context of information security, social engineering is the psychological manipulation of people into performing actions or divulging confidential information. A type of confidence trick for the purpose of information gathering, fraud, or system access, it differs from a traditional "con" in that it is often one of many steps in a more complex fraud scheme. It has also been defined as "any act that influences a person to take an action that may or may not be in their best interests."Research done in 2020 has indicated that social engineering will be one of the most prominent challenges of the upcoming decade. Having proficiency in social engineering will be increasingly important for organizations and countries, due to the impact on geopolitics as well. Social engineering raises the question of whether our decisions will be accurately informed if our primary information is engineered and biased.Social engineering attacks have been increasing in intensity and number, cementing the need for novel detection techniques and cyber security educational programs.
Social_engineering_(security) - Wikipedia, the free encyclopediaWhich of the following security best practices would prevent a program on a CD from immediately launching when inserted into a computer?
Disable autorun
Rename the Administrator account
Disable the Guest account
MSCONFIG >Startup Tab
The Autorun.exe file is automatically run when Windows reads a new CD. Disabling this function in Windows will keep CD's from opening up when inserted.
Which of the following commands will allow a user to discover their IP address, subnet mask and DNS server address?
IPCONFIG /ALL
NETSTAT -A
IPCONFIG
NSLOOKUP
IPCONFIG will show the IP address and subnet mask but will not show the DNS server address. IPCONFIG /ALL will show the DNS address in addition to the IP and subnet mask.
ipconfig (standing for "Internet Protocol configuration") is a console application program of some computer operating systems that displays all current TCP/IP network configuration values and refreshes Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS) settings.
Ipconfig - Wikipedia, the free encyclopediaWhich of the following terms describes a group of devices communicating using Bluetooth?
Bluenet
Extranet
Piconet
WAP
A Piconet is a group of wireless devices connected using Bluetooth. An Extranet is an Intranet that is partially available to external users. WAP is a Wireless Access Point.
A piconet is an ad hoc network that links a wireless user group of devices using Bluetooth technology protocols. A piconet consists of two or more devices occupying the same physical channel (synchronized to a common clock and hopping sequence). It allows one master device to interconnect with up to seven active slave devices. Up to 255 further slave devices can be inactive, or parked, which the master device can bring into active status at any time, but an active station must go into parked first. Some examples of piconets include a cell phone connected to a computer, a laptop and a Bluetooth-enabled digital camera, or several PDAs that are connected to each other.
Piconet - Wikipedia, the free encyclopediaThe payroll department works with company financial data and had an incident that involved employee’s salary being shared across the network. Which of the following actions would solve this problem?
Configure directory permissions for least privilege
obtain a new security system with RFID employee badges
Purchase Additional Firewalls
Implement a new paper shredding policy
The important information here is that the information was shared on the network. All of these options are good for security, but only using least privilege on the network directory will affect this specific problem.
In information security, computer science, and other fields, the principle of least privilege (PoLP), also known as the principle of minimal privilege (PoMP) or the principle of least authority (PoLA), requires that in a particular abstraction layer of a computing environment, every module (such as a process, a user, or a program, depending on the subject) must be able to access only the information and resources that are necessary for its legitimate purpose.
Principle_of_least_privilege - Wikipedia, the free encyclopediaOf which of the following Windows System Power States saves the contents of memory to a file on the PC's hard drive?
Hibernation
Stand By
Sleep
Wake on Lan
Sleep, Hibernation, and Stand By are the only true System Power States. Of the three, only hibernation provides no power to memory, and saves memory contents to the hard drive to be loaded back into memory when the computer wakes up.
Hibernation (also known as suspend to disk, or Safe Sleep on Macintosh computers) in computing is powering down a computer while retaining its state. When hibernation begins, the computer saves the contents of its random access memory (RAM) to a hard disk or other non-volatile storage. When the computer is turned on the RAM is restored and the computer is exactly as it was before entering hibernation. Hibernation was first implemented in 1992 and patented by Compaq Computer Corporation in Houston, Texas. Microsoft's Windows 10 employs a type of hibernation (fast startup) by default when shutting down.
Hibernation_(computing) - Wikipedia, the free encyclopediaWhich of the following commands will force the Windows Operating System to power off after one minute?
shutdown /r /t 60
shutdown /s /t 60
shutdown /l 60
shutdown /h /t 1m
Shutdown /s tells the system to shutdown (without restarting) and /t [seconds] tells the system how many seconds to wait before doing so.
To shut down or power off a computer is to remove power from a computer's main components in a controlled way. After a computer is shut down, main components such as CPUs, RAM modules and hard disk drives are powered down, although some internal components, such as an internal clock, may retain power.
Shutdown_(computing) - Wikipedia, the free encyclopediaWhich of the following should be regularly scheduled to fix hard drive errors?
Check Disk
System Restore
Defragmentation
Antivirus Scan
Check Disk (CHKDSK) is a Windows command line tool that will verify the integrity of a disk drive, as well as attempt to solve any errors that are found.
In computing, CHKDSK (short for "check disk") is a system tool and command in DOS, Digital Research FlexOS, IBM/Toshiba 4690 OS, IBM OS/2, Microsoft Windows and related operating systems. It verifies the file system integrity of a volume and attempts to fix logical file system errors. It is similar to the fsck command in Unix and similar to Microsoft ScanDisk, which co-existed with CHKDSK in Windows 9x and MS-DOS 6.x.
CHKDSK - Wikipedia, the free encyclopediaWhich of the following security threats requires the attacker to be physically located near the target machine?
Rootkit
Shoulder surfing
Social engineering
Phishing
Shoulder Surfing is the practice of spying on a user while they use a computer, ATM, or other electronic device.
In computer security, shoulder surfing is a type of social engineering technique used to obtain information such as personal identification numbers (PINs), passwords and other confidential data by looking over the victim's shoulder. Unauthorized users watch the keystrokes inputted on a device or listen to sensitive information being spoken, which is also known as eavesdropping.
Shoulder_surfing_(computer_security) - Wikipedia, the free encyclopediaA technician would like to restart a computer from a command line tool. Which of the following tools should the technician use?
Shutdown /s
Shutdown /r
Shutdown /i
Shutdown /f
Shutdown is a Windows command line tool that shuts down the PC. With the /r flag, the Shutdown command will restart the PC.
To shut down or power off a computer is to remove power from a computer's main components in a controlled way. After a computer is shut down, main components such as CPUs, RAM modules and hard disk drives are powered down, although some internal components, such as an internal clock, may retain power.
Shutdown_(computing) - Wikipedia, the free encyclopediaWhich of the following is the MOST secure method of data removal that will still allow a drive to be reused, but will not allow erased data to be easily recovered from a hard drive?
Use an overwrite program
Re-partition the drive
Use a degaussing tool
Format the drive
Degaussing a disk will destroy it, so that is not an option. Re-partitioning or formatting the disk will mark areas on the disk as empty, but will not destroy the data until that space is needed for new data. Using a tool to overwrite the data, preferably multiple times, is the only way to ensure that data cannot be recovered while still allowing the disk to be reused.
In computer data storage, overwriting is the process of replacing old information with new information Overwriting generally occurs when unused file system clusters are written upon with new data, though overwriting is also used in security algorithms These algorithms use a precise set of rules to remove any part of original data from the memory by writing new raw data on the memory Data that has been overwritten, even just once, is generally considered to be unrecoverable
Overwriting_(computer_science) - Wikipedia, the free encyclopediaA user has called the IT Department and states that their computer does not work. Which of the following would be the BEST question to obtain further information?
Are you able to sign on?
What exactly does not work?
Does the PC turn on?
Can you get to the Internet?
You should always try to get as much relevant information as possible before beginning to troubleshoot. But remember to start with basic information first, most users are not IT's or tech savvy.
Troubleshooting is a form of problem solving, often applied to repair failed products or processes on a machine or a system. It is a logical, systematic search for the source of a problem in order to solve it, and make the product or process operational again. Troubleshooting is needed to identify the symptoms. Determining the most likely cause is a process of elimination—eliminating potential causes of a problem. Finally, troubleshooting requires confirmation that the solution restores the product or process to its working state.
Troubleshooting - Wikipedia, the free encyclopediaA user is concerned about an issue with iOS. Which technology is the user referring too?
Galaxy II
iPhone
Android Phone
iCloud
iOS is Apple's operating system for their mobile devices (iPhone, iPad, iPod Touch). IOS can also refer to Cisco's Internetwork OS, but not typically from a user.
iOS (formerly iPhone OS) is a mobile operating system based on macOS and on components of the Mach microkernel and FreeBSD, a Unix-like operating system, developed by Apple Inc. exclusively for its smartphones. It was unveiled in January 2007 for the first-generation iPhone, launched in June 2007. Although some parts of iOS are open source under the Apple Public Source License and other licenses, iOS is an Apple proprietary software.It is the operating system that powers many of the company's mobile devices, including the iPhone; the term also includes the system software for iPads (predating iPadOS, which was introduced in 2019) as well as on the iPod Touch devices (which were discontinued in mid-2022). It is the world's second-most widely installed mobile operating system, after Android. It is the basis for three other operating systems made by Apple: iPadOS, tvOS, and watchOS.Since its launch, iOS has been extended to support other Apple devices such as the iPod Touch (September 2007) and the iPad (introduced: January 2010; availability: April 2010). As of December 2023, Apple's App Store contains more than 3.8 million iOS applications. These mobile apps have collectively been downloaded more than 130 billion times. Major versions of iOS are released annually. The current stable version, iOS 17, was released to the public on September 18, 2023.
IOS - Wikipedia, the free encyclopediaWhich of the following boot methods receives the bootstrap files from a network server?
NAT
PAN
PXE
IDS
PXE (PreBoot Execution Environment) is an industry standard protocol that allows client computer(s) to boot to an environment located on a central server.
In computing, the Preboot eXecution Environment, PXE (most often pronounced as pixie, often called PXE Boot/pixie boot.) specification describes a standardized client–server environment that boots a software assembly, retrieved from a network, on PXE-enabled clients. On the client side it requires only a PXE-capable network interface controller (NIC), and uses a small set of industry-standard network protocols such as DHCP and TFTP. The concept behind the PXE originated in the early days of protocols like BOOTP/DHCP/TFTP, and as of 2015 it forms part of the Unified Extensible Firmware Interface (UEFI) standard. In modern data centers, PXE is the most frequent choice for operating system booting, installation and deployment.
Preboot_Execution_Environment - Wikipedia, the free encyclopediaLooks like thats it! You can go back and review your answers or click the button below to grade your test.
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