Lesson 8: Supporting Mobile Devices

LCD (liquid crystal display)

A common display technology that is low power and cost-effective, but struggles to achieve true black.

TN (twisted nematic)

A type of LCD display that is good for gaming but has poor viewing angles.

IPS (intrusion prevention system)

An LCD technology that offers better color reproduction and is ideal for graphics work.

OLED (organic light-emitting diode)

A display technology that is thin, lightweight, and provides great color quality, commonly used in tablets and smartphones.

USB-C

A versatile USB connection type that is reversible and supports fast charging.

NFC (near field communication)

A wireless technology used for mobile payments and access control.

Bluetooth

A wireless standard commonly used for audio devices.

Mobile Hotspot

A feature allowing phones to provide Wi-Fi access; may incur additional charges.

Active Stylus

A stylus that detects pressure and is specifically designed for certain devices, such as the Apple Pencil.

MDM (Mobile Device Management)

A system for managing security, device configurations, and data syncing across mobile devices.

SSD (solid state drive)

Solid-State Drive, a type of storage that offers faster performance compared to traditional drives.

2G

The second generation of cellular networks featuring GSM (global) and CDMA (US-specific) technologies.

5G

The fifth generation of mobile networks, providing high-speed data capabilities (up to 10 Gbps) for IoT devices.

Biometrics

Secure authentication methods using unique physical traits, such as face or fingerprint recognition.

Backup/Recovery

The process of restoring data, often done through cloud services.

Which wireless interface could be used to connect peripheral input devices to the laptop if a dock is not available?

Bluetooth technology.

What is the purpose of using an anti-static wrist strap for this procedure?

To prevent static electricity damage to sensitive components.

A user returned a new laptop to the helpdesk with complaints that the screen was too dark and that the desktop image they put on it burned into the display. What kind of display does the laptop most likely have?

OLED (organic light emitting diode)

A company uses cell phones that do not have SIM cards and can only be managed by a specific network provider. The company wants to buy 4G cell phones with SIM cards for voice calls so they can switch to any chosen provider. What network type best suits the company's needs?

LTE (Long Term Evolution)

An organization that does not support the autodiscovery feature for email servers is deploying new phones to its team. A user is configuring an email server on their new device. What options might the user enter in the incoming mail server field to implement a proper configuration?

• FQDN, (fully qualified domain name)

• IP address

A user would like to take advantage of biometric technology for a quicker and more secure login to a laptop. The user discovers the laptop has no built-in technology for biometrics. What solution does the IT department offer?

USB peripheral device

A user purchased their first smartphone and wants to download useful apps to it. What must the user do before they can use the app store?

Configure an account.

A technician plans a memory upgrade for a fleet of computers for sales users. When evaluating the various types of memory modules, what module types are commonly used for ultraportable laptops?

DIMM

• Micro-DIMM

A user’s device allows them to bypass the screen lock using biometric authentication. Which of the following are biometric authentication methods the user can configure?

• Fingerprint reader

• Facial recognition

• D.Voice recognition

A traveling user looks to purchase a smartphone that has a high tolerance for differing environments. This includes indoor and outdoor use. What ingress protection (IP) rating does the user look for when wanting to protect the device from solids as best as possible?

IP67

A network technician is purchasing new displays for the graphics design team. Which type of thin-film transistor (TFT) will be optimal for supporting that type of work?

In-plane switching

A Windows-based laptop has an internal battery that requires tools to access and remove. What steps must a repair technician take prior to opening the laptop to install a replacement? 

• Power the laptop off.

• Disconnect the AC power.

user notices that a smartphone is not functioning properly as internal diagnostics show a majority of the RAM being used continuously with certain applications. What symptom should a technician look for?

Resource usage

A network technician is working from a coffee shop and does not want to use their insecure wireless connection. What can the technician enable on his smartphone to provide his laptop with his own Wi-Fi connectivity?

Hotspot

A network technician trains a new employee on the company devices they received during orientation. Which devices will usually have both a front and rear camera? 

• Smartphone

• Tablet

A user utilizing an external mouse complains that when typing on a laptop keyboard, the cursor slowly moves across the screen. What actions can the help desk perform to prevent this behavior from happening?

• Adjust the sensitivity setting.

• Disable the touchpad.

• Update the driver.

A non-tech savvy laptop user orders a new hard drive from a large online retailer to install in the laptop. When the drive arrives, the user discovers that it is physically too big to install. What size drive did the user order?

3.5 in.

A user states that a mobile phone does not hold a very good charge. What might the cause be?

• Improper battery charging

• Lack of power management

• An aging battery.

A warehouse user reports an issue with a laptop to the IT helpdesk. The issue is that the laptop becomes very hot after only a few minutes of use whether it is plugged in or not. The user states that laptop use is under the usual circumstances. What does IT conclude the likely problem to be?

Dust and debris

Enterprises use different deployment models to specify how they provision mobile devices and apps for employees. Which function of enterprise management allows the organization to perform remote wipes on devices?

MDM (mobile device management)

A technician needs to replace a solid-state drive (SSD) in a user’s laptop. The technician requested the purchasing department to order a drive that has higher bus speeds than other SSDs and fits into a PCI Express bus when incorporating the appropriate adapter. Which drive type does the purchasing department order?

M.2

A mobile device user is traveling out of the area and left their device somewhere outside. The user wants to track where they last had their mobile device in order to retrace their steps and find the device. Which of the following options is the system that relies solely on satellite communication to pinpoint a device’s location and help the user find their device?

Global Positioning System.