Free Practice Questions for Apple Apple-Device-Support Exam

An IP address that starts with 169.254 is called a link-local address. It is assigned by the operating system when the DHCP client cannot contact a DHCP server to obtain a valid IP address. This may indicate a problem with the DHCP server, the network connection, or the DHCP client configuration. A link-local address is not routable and cannot communicate with devices outside the local network segment. References: = Troubleshoot problems on the DHCP server, Windows 10 not getting IP address from DHCP, Fix duplicate IP address conflicts on a DHCP network, DHCP client may fail to obtain a DHCP-assigned IP address, Setting IP Address Using DHCP Server

 Wi-Fi signal level, also known as Received Signal Strength Indicator (RSSI), is a measure of how well your device can receive the wireless signal from the router or access point. It is usually expressed in decibel-milliwatts (dBm), which is a logarithmic scale that ranges from -30 dBm (very strong signal) to -100 dBm (very weak signal). The higher the negative value, the weaker the signal.

According to the Apple Device Support Reference Materials1, iPhone and iPad will search for a stronger Wi-Fi network when the signal level drops below -80 dBm. This is because a weak signal can affect the performance, reliability, and security of your Wi-Fi connection. A weak signal can also drain your device’s battery faster, as it requires more power to maintain the connection.

To check the Wi-Fi signal level on your iPhone or iPad, you can use the following steps23:

Open the Settings app on your device.

Go to Wi-Fi.

Under the Wi-Fi network list, locate the name of the Wi-Fi network or wireless router you want to check the signal strength for.

Tap the information icon (i) next to the network name.

Look for the RSSI value, which shows the signal level in dBm.

Alternatively, you can also use third-party apps that can display the Wi-Fi signal level on your device, such as Wi-Fi Sweetspots or Network Analyzer.

References:

Recommended settings for Wi-Fi routers and access points.

How to View Wi-Fi Networks Signal Strength on iPhone or iPad.

How to View Wi-Fi Networks Signal Strength on iPhone or iPad | Guide.

Disk Utility on Mac supports several file system formats for formatting, partitioning, and erasing disks. According to the Apple Device Support Reference Materials1, these formats are:

Apple File System (APFS): The file system used by macOS 10.13 or later, which features strong encryption, space sharing, snapshots, fast directory sizing, and improved file system fundamentals. APFS is optimized for the Flash/SSD storage used in recent Mac computers, but it can also be used with older systems with traditional hard disk drives (HDD) and external, direct-attached storage. APFS supports four variants: APFS, APFS (Encrypted), APFS (Case-sensitive), and APFS (Case-sensitive, Encrypted).

Mac OS Extended: The file system used by macOS 10.12 or earlier, which is also known as HFS Plus or HFS+. Mac OS Extended supports journaling, which helps protect the integrity of the file system in case of power outages or hardware failures. Mac OS Extended also supports four variants: Mac OS Extended (Journaled), Mac OS Extended (Journaled, Encrypted), Mac OS Extended (Case-sensitive, Journaled), and Mac OS Extended (Case-sensitive, Journaled, Encrypted).

ExFAT: A file system that is compatible with both Mac and Windows computers, and can be used for transferring files between them. ExFAT supports larger file sizes than FAT32, up to 16EB, and larger volumes, up to 128 PB. ExFAT does not support journaling, encryption, or case sensitivity.

MS-DOS (FAT): A file system that is compatible with both Mac and Windows computers, and can be used for transferring files between them. MS-DOS (FAT) supports two variants: FAT16 and FAT32. FAT16 is limited to 2 GB volumes and 4 GB files, while FAT32 can support up to 2 TB volumes and 4 GB files. MS-DOS (FAT) does not support journaling, encryption, or case sensitivity.

Therefore, the correct answer is A, C, D, and F.

References:

File system formats available in Disk Utility on Mac.

Quick Start is a feature that allows you to set up your new iOS device automatically using your current iOS device. To use Quick Start, both devices need to be running iOS 11 or later, have Bluetooth turned on, and be placed near each other. If Quick Start does not automatically discover the other device, it could be due to a temporary glitch or a network issue. Restarting both devices can help resolve the problem and allow Quick Start to work properly. References: Use Quick Start to transfer data to a new iPhone or iPad - Apple Support, iPhone Quick Start Not Working? Here Are Fixes - iMobie, Fix iPhone Quick Start Not Working: 6 Troubleshooting Tips - OS X Daily