What is the primary security risk of a SUID-root executable?

It runs with root privileges, so a vulnerability could lead to privilege escalation

It allows any user to read the file's source code

It changes the file owner to root automatically

It makes the file immutable and prevents modification

An administrator is troubleshooting an application that reads extended attributes. The application fails to read an attribute named 'user.checksum' from a file. The administrator verifies the attribute exists with getfattr. What is a likely reason the application cannot read it?

The attribute is in the trusted namespace.

The application is running as root.

The file system does not support extended attributes.

The application does not have read permission on the file.

What is the effect of the execute permission bit on a directory?

Allows listing the names of files in the directory

Allows traversing into the directory and accessing files within it

Allows changing the ownership of files in the directory

Allows creating and deleting files in the directory

LPIC-3 Security

Domain 3Objective 1

327.1 Discretionary Access Control (weight: 3) LPIC-3-SECURITY Practice Questions (Page 1)

Part of the Topic 327: Access Control domain, which makes up ~19% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–11 in this domain), expect 2–4 from this objective — we provide 19 practice questions to prepare you well beyond it. (estimate)

19questions here

4free pages

5concepts

Questions 1–5

1foundation · easy
What is the primary security risk of a SUID-root executable?
Select an answer first
2foundation · easy
Which command is used to view extended attributes on a file?
Select an answer first
3application · medium
An administrator is troubleshooting an application that reads extended attributes. The application fails to read an attribute named 'user.checksum' from a file. The administrator verifies the attribute exists with getfattr. What is a likely reason the application cannot read it?
Select an answer first
4foundation · easy
What is the effect of the execute permission bit on a directory?
Select an answer first
5foundation · easy
Which command displays the ACL entries for the file /data/report.txt?
Select an answer first

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327.1 Discretionary Access Control (weight: 3) LPIC-3-SECURITY Practice Questions (Page 1)

Questions 1–5

What is the primary security risk of a SUID-root executable?

Which command is used to view extended attributes on a file?

An administrator is troubleshooting an application that reads extended attributes. The application fails to read an attribute named 'user.checksum' from a file. The administrator verifies the attribute exists with getfattr. What is a likely reason the application cannot read it?

What is the effect of the execute permission bit on a directory?

Which command displays the ACL entries for the file /data/report.txt?

Keep studying — Topic 327: Access Control