102.3

Question 1

Which command is used to display shared library dependencies?
a) ldd
b) ldconfig
c) libcheck

Answer 1

ldd

Question 2

Where are the default shared libraries typically stored?
a) /lib and /usr/lib
b) /var/lib
c) /usr/local/lib

Answer 2

/lib and /usr/lib

Question 3

What command is used to update the shared library cache?
a) ldconfig
b) ldd
c) libconfig

Answer 3

ldconfig

Question 4

Which file lists the directories containing shared libraries?
a) /etc/ld.so.conf
b) /usr/lib.conf
c) /etc/lib.conf

Answer 4

/etc/ld.so.conf

Question 5

What does the LD_LIBRARY_PATH environment variable specify?
a) Locations of additional shared libraries
b) Default system library path
c) Shared libraries cache file

Answer 5

Locations of additional shared libraries

Question 6

How can you force the system to reload the shared library cache?
a) ldconfig -v
b) ldd –reload
c) ldconfig -f

Answer 6

ldconfig -v

Question 7

What is the role of /etc/ld.so.cache?
a) Stores cached information about shared libraries
b) Lists all shared libraries
c) Defines paths for shared libraries

Answer 7

Stores cached information about shared libraries

Question 8

How can you check the version of the GNU C library?
a) ldd –version
b) glibc –check
c) libversion

Answer 8

ldd –version

Question 9

Which environment variable can override the default search path for shared libraries?
a) LD_LIBRARY_PATH
b) LIB_CONFIG_PATH
c) SHARED_LIB_PATH

Answer 9

LD_LIBRARY_PATH

Question 10

What does the term ‘soname’ refer to?
a) A specific version of a shared library
b) Library configuration file
c) Library search path

Answer 10

A specific version of a shared library

Question 11

Which directory is primarily used for 64-bit shared libraries?
a) /lib64
b) /lib
c) /usr/lib64

Answer 11

/lib64

Question 12

What command can list all the currently loaded shared libraries?
a) ldconfig -p
b) ldd –list
c) liblist

Answer 12

ldconfig -p

Question 13

Which option of the ‘ldd’ command prevents execution of shared libraries?
a) –verbose
b) –version
c) –warn

Answer 13

–warn

Question 14

What is the main purpose of shared libraries?
a) To reduce memory usage by sharing common code
b) To store compiled binaries
c) To organize program files

Answer 14

To reduce memory usage by sharing common code

Question 15

Which file defines the default library load paths?
a) /etc/ld.so.conf
b) /lib/ld.conf
c) /usr/ld.conf

Answer 15

/etc/ld.so.conf

Question 16

Which command can you use to display which shared libraries a binary uses?
a) ldd
b) ldconfig
c) libdump

Answer 16

ldd

Question 17

What is the typical extension of shared libraries in Linux?
a) .so
b) .lib
c) .dll

Answer 17

.so

Question 18

How can you add a new library path to the system?
a) Edit /etc/ld.so.conf and run ldconfig
b) Use ldd with the new path
c) Edit /etc/ldconfig.conf

Answer 18

Edit /etc/ld.so.conf and run ldconfig

Question 19

Which command clears the shared library cache?
a) ldconfig -r
b) libclear
c) ldconfig –clear

Answer 19

ldconfig -r

Question 20

What is the primary role of ‘libc’ in Linux?
a) Standard C library
b) Shared memory manager
c) Kernel interface

Answer 20

Standard C library

Question 21

What is a common reason for ‘library not found’ errors?
a) Incorrect library paths
b) Missing binary file
c) Permission issues

Answer 21

Incorrect library paths

Question 22

Which command removes a shared library?
a) rm <library>
b) libremove
c) unlink <library></library></library>

Answer 22

rm <library></library>

Question 23

Which of the following is a dynamically linked library?
a) libm.so
b) libm.a
c) libc.a

Answer 23

libm.so

Question 24

What is the command to print the current shared library paths?
a) ldconfig -p
b) ldd –paths
c) printlibs

Answer 24

ldconfig -p

Question 25

What type of file is typically used to link shared libraries? a) Symlinks b) Binary c) Plain text

Answer 25

Symlinks

Question 26

What is the primary difference between shared and static libraries? a) Shared libraries are loaded at runtime, static libraries are included in the binary b) Static libraries are larger than shared libraries c) Shared libraries are faster

Answer 26

Shared libraries are loaded at runtime, static libraries are included in the binary

Question 27

Which environment variable can be used to debug shared libraries? a) LD_DEBUG b) LIB_DEBUG c) LD_TRACE

Answer 27

LD_DEBUG

Question 28

What is the key benefit of using shared libraries? a) Reducing memory and disk usage by sharing common code b) Faster program execution c) Improved security

Answer 28

Reducing memory and disk usage by sharing common code

Question 29

How can you manually remove an outdated shared library? a) Delete the file and run ldconfig b) Run ldd --remove c) Delete the file and run libclear

Answer 29

Delete the file and run ldconfig

Question 30

Which command updates the symbolic links for shared libraries? a) ldconfig b) ln -s c) liblink

Answer 30

ldconfig