GPT is the correct answer for this question. GPT stands for GUID Partition Table, and it is a partition style that supports up to 128 primary partitions and up to 18 exabytes of disk size per partition. GPT also uses a unique identifier for each partition and provides better data protection and recovery. GPT is suitable for partitioning a hard disk that has five primary partitions with 4TB of free space each. EFS, MBR, and FAT32 are not correct answers for this question. EFS stands for Encrypting File System, and it is a feature that allows encrypting files and folders on NTFS volumes. EFS is not a partition style, but rather a file system attribute.
MBR stands for Master Boot Record, and it is an older partition style that supports up to four primary partitions and up to 2TB of disk size per partition. MBR cannot handle five primary partitions with 4TB of free space each. FAT32 stands for File Allocation Table 32, and it is a file system that supports up to 32GB of disk size per partition and up to 4GB of file size. FAT32 is not a partition style, but rather a file system type. References:
* Official CompTIA learning resources CompTIA A+ Core 1 and Core 2, page 14
* CompTIA A+ Complete Study Guide: Core 1 Exam 220-1101 and Core 2 Exam ..., page 105

To locate a missing file with only a partial name known, the best tools to use in a Linux environment would be grepandfind.
grep:This command is used to search the contents of files for a specific pattern. Whilegrepitself might not be the first choice for finding file names, it can be combined with other commands (likelsorfind) to search within file lists or contents.
find:This command is used to search for files in a directory hierarchy based on various criteria like name, size, modification date, etc.findcan be used to search for files by partial name by using wildcards in the search pattern.
cat(A) is used to concatenate and display the content of files.df(B) displays the amount of disk space used and available on filesystems.ps(D) shows information about active processes.dig(E) is used for querying DNS name servers.top(G) displays Linux tasks and system performance information. None of these tools are directly suited for finding files by partial names.

The best action to protect against unauthorized access of the data on the lost company tablet is to perform a remote wipe on the device. A remote wipe is a feature that allows an administrator or a user to erase all the data and settings on a device remotely, usually through a web portal or an email command. A remote wipe can help prevent the data from being accessed or compromised by anyone who finds or steals the device.
Changing the office's Wi-Fi SSID and password may prevent the device from connecting to the office network but may not prevent the data from being accessed locally or through other networks. Changing the user's password may prevent the device from logging in to the user's account but may not prevent the data from being accessed by other means or accounts. Enabling remote drive encryption may protect the data from being read by unauthorized parties but may not be possible if the device is already lost or turned off.
References: CompTIA A+ Core 2 (220-1002) Certification Exam Objectives Version 4.0, Domain 3.1

Detailed Explanation with Core 2 References:The default gateway directs network traffic to external networks. If the traffic is still going to the old firewall, updating the gateway setting will redirect it to the new firewall. This task is part of network configuration management covered in Core 2 (Core 2 Objective 2.5).

Detailed Explanation with Core 2 References:The PC is likely infected with ransomware. The immediate step should be to disconnect from the network to prevent the malware from spreading to other devices. Core 2 highlights steps to respond to malware incidents, such as disconnecting from the network as part of containment measures (Core 2 Objective 2.3).