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CySA+ Exam CS0-003: Assisted Lab on File Analysis Techniques, Exams of Computer Communication Systems

A series of exercises and questions focused on file analysis techniques, relevant to the cysa+ (exam cs0-003) certification. it covers topics such as identifying strings within files, understanding hash functions (md5, sha256), and confirming file existence and content. The exercises are designed to test practical skills in digital forensics and cybersecurity.

Typology: Exams

2024/2025

Available from 05/12/2025

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22:
Assisted
Lab:
Using
File
Analysis
Techniques
CySA+
(Exam
CS0-003)
14/14
Congratulations,
you
passed!
Duration:
43
minutes,
49
seconds
What
21-character
string
is
present
in
three
of
the
four
image
files
with
a
filename
of
Score:
1
sample.*?
(Type
in
the
string
exactly
as
presented)
Created
with
The
GIMP
Congratulations,
you
have
answered
the
question
correctly.
confirm
the
existence
of
/var/lib/inetsim/http/fakefiles/outfile.txt
Score:
1
Select
the
Score
button
to
validate
this
task:
File
/var/lib/inetsim/http/fakefiles/outfile.txt
exists
and
contains
"!This
program
cannot
be
run
in
DOS
mode.'
Task
complete
What
is
the
first
long
string
extracted
from
samp
le_gui.exe?
Score:
1
This
is
the
INetSim
default
GUI
binary
«
IThis
program
cannot
be
run
in
DOS
mode.
The
result
is
too
small
to
be
represented
(UNDERFLOW)
Created
with
The
GIMP
Congratulations,
you
have
answered
the
question
correctly.
confirm
the
presence
of
/root/Downloads/4-kwsrch-ext3/ext3-img-
Score:
1
kw-1.dd
Select
the
Score
button
to
validate
this
task:
File
/root/Downloads/4-kwsrch-ext3/ext3-img—-kw-1.dd
exists
Task
complete
confirm
the
existence
of
/root/Downloads/4-kwsrch-ext3-hash.txt
Score:
1
Select
the
Score
button
to
validate
this
task:
File
/root/Downloads/4-kwsrch—-ext3-hash.txt
exists
and
contains
'30e71792cc853e34e17335b243605d3a
4-kwsrch—-ext3/ext3-img-kw-1.dd"’
Task
complete
pf3

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22: Assisted Lab: Using File Analysis Techniques

CySA+ (Exam CS0-003)

14/ Congratulations, you passed! Duration: 43 minutes, 49 seconds What 21-character string is present in three of the four image files with a filename of Score: 1 sample.*? (Type in the string exactly as presented) Created with The GIMP Congratulations, you have answered the question correctly. confirm the existence of /var/lib/inetsim/http/fakefiles/outfile.txt Score: 1 Select the Score button to validate this task: File /var/lib/inetsim/http/fakefiles/outfile.txt exists and contains "!This program cannot be run in DOS mode.' Task complete

What is the first long string extracted from samp le_gui.exe? Score: 1

This is the INetSim default GUI binary « IThis program cannot be run in DOS mode. The result is too small to be represented (UNDERFLOW) Created with The GIMP Congratulations, you have answered the question correctly. confirm the presence of /root/Downloads/4-kwsrch-ext3/ext3-img- Score: 1 kw-1.dd Select the Score button to validate this task:

File /root/Downloads/4-kwsrch-ext3/ext3-img—-kw-1.dd exists

Task complete confirm the existence of /root/Downloads/4-kwsrch-ext3-hash.txt Score: 1 Select the Score button to validate this task: File /root/Downloads/4-kwsrch—-ext3-hash.txt exists and contains '30e71792cc853e34e17335b243605d3a 4-kwsrch—-ext3/ext3-img-kw-1.dd"’ Task complete

What is the bit length^ of^ an^ MD5^ hash?^ Score:^1

256 160 64 Congratulations, you have answered the question correctly. Select the Score button to validate^ this^ task:^ Score:^1 File /root/Downloads/4-kwsrch—-ext3/imageout.txt exists and contains '"KW_SEARCH' Task complete

On the first page of the captured string output for the ext3-img-kw-1.dd file, which of Score: 1

the following are present? first KW_SEARCH slacker file IThis program cannot be run in DOS mode. lost+found Congratulations, you have answered the question correctly.

How many times does the string "first” occur in the ext3-img-kw-1.dd file? Score: 1

® I~ N^ = Congratulations, you have answered the question correctly.

What are the series of ASCII characters called that can be extracted from most types Score: 1

of files, especially executables? ¢« strings code permutations output Congratulations, you have answered the question correctly. What is the^ purpose^ of^ calculating^ a^ hash^ of^ files?^ Score:^1