IT Essentials v8 Chapter 7 Check Your Understanding Answers

1. Match the term with the respective description.

Explanation: Place the options in the following order:

Uses a special mobile OS and has small screen sizes averaging 5 inches. Touch screens with no physical keyboard. Bluetooth, Wi-Fi and cellular data capability, Software apps are downloadable from app stores. Smartphone
Runs a mobile OS. Larger touch screens with most being about 8 inches diagonally. Runs apps downloadable from an app store. Have Wi-Fi and Bluetooth connectivity. Some have cellular capability. Tablet
A wearable device with a very small touchscreen display. Runs a special OS and apps. Offers sensors that exchange data with a smartphone over Bluetooth. Often includes body monitoring and fitness tracking capability. May include GPS, Wi-Fi and limited cellular data connectivity. Some have cellular capability. Smartwatch
Special purpose wearable device that monitors heart function and physical activity. USB connectivity and may include Bluetooth. Higher-end models may have Wi-Fi and GPS. Fitness-Tracker
Special purpose device with a 6 inch or larger black and white display optimized for reading text. May have Bluetooth, Wi-fi and limited cellular data capability. E-reader
Can run on battery or be plugged in. Usually runs a full OS and can run desktop software. CPU power, RAM resources and fixed desktop storage are similar to desktop computers. RAM and storage are upgradeable. Laptop

2. Match the term with the respective description.

Explanation: Place the options in the following order:

This uses a fluorescent backlight to illuminate the display. LCD
This converts the touch actions into digitized signals. Digitizer
This converts direct current into alternating current. Inverter
This uses individually lit pixels. OLED
This uses fluorescent tubes that are connected to an inverter used to convert DC to AC. CCFL

3. Match the ACPI standard to the respective power management state.

Explanation: Place the options in the following order:

The CPU is off, but the RAM is refreshed to maintain its contents. S2
The CPU and RAM are off. The contents of the RAM have been saved to a temporary file on the hard disk. S4
The CPU is not executing instructions; however, the CPU and RAM are still receiving power. S1
The CPU is off, and the RAM is set to a slow refresh rate. S3
The computer is off and any content that has not been saved will be lost. S5
The computer is on, and the CPU is running at full power. S0

4. Match the statement with the respective option.

  • Bluetooth devices are capable of handling voice, music, videos and data – True
  • Class 1 Bluetooth devices have a range of approximately 100 meters or 330 feet – False
  • Tethering allows other devices to access the internet through a cell phone – True
  • Configuring a wireless network connection is performed through the System and Security settings within the control panel – True
  • Class 2 Bluetooth devices have a range of approximately 10 meters or 66 feet – True

5. Match the term to the respective image.

Explanation: An Express Card slots to add functionality to a laptop. An Express Card is an interface to connect peripheral devices to a computer, usually a laptop computer.
An external flash drive is a removable storage device. Flash drives provide fast access to data, high reliability, and reduced power usage.
Most laptops use a smaller profile memory module that is called SODIMM. SODIMM has 72-pin and 100-pin configurations for support of 32-bit transfers and 144-pin, 200-pin, and 204-pin configurations for support of 64-bit transfers.
A CompactFlash card (CF card) is a memory card format developed by SanDisk in 1994 that uses flash memory technology to store data on a very small portable device such as a digital camera.

6. Choose whether the statement is true or false.

  • Thermal paste should be applied after installing the CPU heat sink. – False
  • Before replacing laptop components both the battery and power cable should be removed. – True
  • The laptop manual should be consulted before removing any components. – True
  • Component replacement steps are the same for all laptops. – False
  • Laptop motherboards have a standard form factor and will fit most all laptops. – False
  • Laptop batteries and RAM modules are considered customer-replaceable units (CRUs). – True

7. Match the technology with the respective description.


Place the options in the following order:

Standard enables speeds of 100 Mb/s up to 1 Gb/s, supports gaming services, and is often implemented using LTE. 4G
Wireless connection is preferred as it is often free. Wi-Fi
This setting turns of all cellular, as well as Wi-Fi and Bluetooth radios. Airplane Mode
Introduced in the 1990s, it enabled speeds up to 2 Mb/s to support mobile internet access. 3G
Standard supports speeds up to 1 Mb/s, and also introduced SMS for text messaging and MMS for sending and receiving photographs and videos. 2G
This setting enables a cellular device to be used as a bridge to the internet using the cellular carrier’s network. Hotspot

8. Match the protocol with the respective description.

Explanation: Place the options in the following order:

Developed to transmit files securely. All data exchanged between the email client and email server is encrypted. SSL
Allows the user to organize email on the network email server, and to download copies of the email. The original copy of the email remains on the network server. Default port is 143. IMAP
An email server, contact manager and calendaring software created by Microsoft. Exchange
Retrieves email from a remote server over TCP/IP. Normally does not leave a copy of email on the email server. Default port is 110. POP3
A text-based protocol that transmits emails across a TCP/IP network. Default port is 25. SMTP
Extends the email format to include text in ASCII standard as well as other formats, such as pictures and word processor documents. MIME

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