Lesson 18: Supporting Mobile Software Flashcards
What two types of ‘biometric authentication’ mechanism are supported on smartphones?
‘Fingerprint’ recognition and ‘facial’ recognition.
True or false? Updates are not necessary for iOS devices because the OS is ‘closed source’.
False. ‘Closed source’ just means that the vendor controls development of the OS; it is still subject to updates to fix problems and introduce new features.
A company wants to minimize the number of devices and mobile OS versions that it must support but allow use of a device by employees for personal email and social networking. What ‘mobile deployment model’ is the best fit for these requirements?
‘Corporate owned, personally enabled’ (COPE) will allow standardization to a single device and OS. As the
requirement does not specify a single device and OS, ‘choose your own device’ (CYOD) would also fit.
The marketing department has refitted a kitchen area and provisioned several smart appliances for employee use. Should the IT department have been consulted first?
Yes. Uncontrolled deployment of ‘network-enabled’ devices is referred as ‘shadow IT’. The devices could increase the network attack surface and expose it to vulnerabilities. The devices must be deployed in a secure configuration and monitored for security advisories and updates.
True or false? A ‘factory reset’ preserves the user’s personal data.
False. ‘Restoring to factory settings’ means removing all user data and settings.
You are updating an internal support knowledge base with advice for troubleshooting mobile devices. What is the first step to take if a user reports that an app will not start?
Use ‘force stop’ if available and/or reboot the device.
You are troubleshooting a user device that keeps powering off unexpectedly. You run hardware diagnostics and confirm there is no component fault or overheating issue. What should your next troubleshooting step be?
Check that the device has sufficient spare storage, and check for updates. If you can’t identify a ‘device-wide’ fault, test to see whether the issue is associated with use of a single app.
You are assisting with the configuration of MDM software. One concern is to deny access to devices that might be able to run apps that could be used to circumvent the access controls enforced by MDM. What types of configurations are of concern?
Devices that are ‘jailbroken’ or ‘rooted’ allow the owner account complete control. Devices that allow installation of apps from untrusted sources, such as by ‘sideloading’ APK packages or via ‘developer’ mode,
could also have weakened permissions.
A user reports that a new device is not sustaining a battery charge for more than a couple of hours. What type of malware could this be a symptom of?
This is most characteristic of ‘cryptomining’ malware as that explicitly hijacks the compute resources of a device to perform the intensive calculations required to mint blockchain currency.
Advanced malware can operate covertly with no easily detectable symptoms that can be obtained by scanning the device itself. What other type of symptom could provide evidence of compromise in this scenario?
Leaked data files or personal information such as passwords.
A user connects their laptop to the company’s wireless access point, but the internet is very slow. A connection to the Wi-Fi with their corporate mobile device is even slower. What should the user try?
A.Check for airplane mode.
B.Check individual radio functions.
C.Move closer to the AP.
D.Reboot the device.
On a mobile, be aware that the radio is less powerful than the one on a computer and that a low battery charge will weaken the signal strength. Try moving the device closer to the access point.
Use the notification drawer or Control Center to check that the device is not in airplane mode
The user should also check that an individual radio function has not been disabled.
If airplane mode is not on, the device range has been checked, and individual radio buttons are enabled, then try rebooting the device.
A user’s phone is randomly rebooting all the time. What should the user do first to diagnose the issue?
A.Conduct battery diagnostics
B.Determine if inadequate resources exist
C.Conduct changes to autorotate settings
D.Ensure the device is connected to Wi-Fi.
A device that randomly reboots might be overheating, having a low battery charge, or having a faulty battery or other hardware.
If users can rule out hardware causes, such as throttling due to high temperature or low battery charge, a device that is slow to respond can be an indication of resources being inadequate.
Use the notification drawer or control center to check that the rotation lock is not enabled if a screen is not auto-rotating.
When an update does not download, connect the device to building power and Wi-Fi. An update may be blocked when there is insufficient battery charge or when the device is connected to a metered network.
A user is experiencing issues on their iPhone. What troubleshooting option should the user initially try?
A.Disable Safe Mode.
B.Perform a power cycle.
C.Perform a Settings/General/Factory reset.
D.Perform a System/Advanced/Factory reset.
Just as turning it off and on again is the tried and trusted method of “fixing” a computer, a reboot can often resolve a transitory performance or stability issue on a mobile device.
Safe Mode disables third-party apps but leaves core services running. Booting a phone in Safe Mode may allow troubleshooting.
To factory reset an iOS device, use the option on the General page in Settings.
On stock Android, initiate a reset from the System > Advanced section of Settings.
A company sets up a mobile device management policy. The company has concerns about the controllability of the devices due to liability, so they are going to purchase the devices for employees to use for business. What is this policy considered?
A.BYOD
B.COBO
C.COPE
D.CYOD
Corporate-owned, business only (COBO) means the device is the property of the company and may only be used for company business.
With bring your own device (BYOD), the mobile device is owned by the employee. The mobile will have to meet whatever profile is required by the company.
With corporate-owned, personally enabled (COPE), the device is chosen and supplied by the company and remains its property.
In choose your own device (CYOD), it is similar to COPE but the employee is given a choice of device from a list.
A security manager is looking at mobile security for company devices. They are investigating no-root firewalls and understanding how this works. Which of the following best describes no-root firewalls?
A.Control access locally.
B.Block phishing sites.
C.Control access through a VPN.
D.Block adware.
“No-root” firewalls work by creating a virtual private network (VPN) and then controlling app access to the virtual private network (VPN).
The “no-root” firewalls do not control access locally because they would need root privileges to do so. It gets around this by setting up a VPN and controlling the firewall through the VPN.
Antivirus/anti-malware apps designed for mobile devices tend to work more like content filters to block access to known phishing sites.
Antivirus/anti-malware apps designed for mobile devices tend to work more like content filters to block adware/spyware activity.
