LX0-103 Question #3: Real Exam Question with Answer & Explanation

The correct answer is E: ldconfig. The ldconfig command updates the dynamic linker's cache of shared libraries, ensuring newly installed libraries are discoverable at runtime. The other listed commands do not exist as standard Linux utilities.

Linux Installation and Package Management

Question

Which of the following commands updates the linker cache of shared libraries?

Options

Amkcache
Bsoconfig
Cmkldconfig
Dlddconfig
Eldconfig

Explanation

The ldconfig command updates the dynamic linker's cache of shared libraries, ensuring newly installed libraries are discoverable at runtime. The other listed commands do not exist as standard Linux utilities.

Common mistakes.

A. mkcache is not a standard Linux command for managing the shared library linker cache.
B. soconfig is not a standard Linux command and does not exist for this purpose.
C. mkldconfig is not a standard Linux command for updating the linker cache.
D. lddconfig is not a standard Linux command - it is a confusion with ldd (which lists shared library dependencies of a binary) and ldconfig.

Concept tested. Updating the dynamic linker shared library cache

Reference. https://man7.org/linux/man-pages/man8/ldconfig.8.html

Topics

#ldconfig#shared libraries#linker cache#dynamic linking

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