TryHackMe 1 Year Premium Subscription Voucher Code practice questions

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Use it as a readiness check rather than a study tool. Work through the questions without notes, read the explanation for every answer including the ones you got right, and treat any domain where you miss more than a third as the area to revise before booking your exam.

Question 1

Which Nmap flag performs a TCP SYN (half-open) scan?

Accepted Answer

The -sS flag sends SYN packets without completing the TCP handshake, making it stealthier and faster than a full connect scan.

Question 2

During enumeration you find TCP port 3306 open. Which service is most likely running?

Accepted Answer

Port 3306 is the default TCP port for MySQL, so an open 3306 strongly suggests a MySQL database service.

Question 3

You need to grab service banners and run default enumeration scripts against discovered ports. Which Nmap option set is most appropriate?

Accepted Answer

-sV performs version detection while -sC runs the default NSE script category, together providing banner and enumeration data.

Question 4

Which HTTP response status code indicates a resource was found but requires authentication credentials to access?

Accepted Answer

A 401 Unauthorized response signals that authentication is required and has not yet been provided, whereas 403 means access is forbidden even with credentials.

Question 5

A form field reflects user input directly into the page without encoding. Which vulnerability class is most directly indicated?

Accepted Answer

Reflecting unsanitized input back into HTML output lets an attacker inject script, which is the defining condition of reflected Cross-Site Scripting.

Question 6

An application builds a SQL query as: SELECT * FROM users WHERE id = '$id'. Which input demonstrates a boolean-based blind injection that always returns true?

Accepted Answer

' OR '1'='1 closes the string and appends an always-true condition, causing the WHERE clause to match every row without needing to read output directly.

Question 7

Which Linux command displays the current working directory?

Accepted Answer

pwd (print working directory) outputs the absolute path of the directory you are currently in.

Question 8

You find a binary with the SUID bit set owned by root. Why is this significant for privilege escalation?

Accepted Answer

A SUID binary runs with the privileges of its owner (root here), so exploiting it can let a low-privileged user execute code as root.

Question 9

A sudo -l listing shows you may run (root) NOPASSWD: /usr/bin/find. Which GTFOBins-style technique escalates to a root shell?

Accepted Answer

Because find can spawn processes via -exec and runs as root through sudo, executing /bin/sh with -exec yields an interactive root shell.

Question 10

Which of the following is a symmetric encryption algorithm?

Accepted Answer

AES uses the same key for encryption and decryption, making it symmetric, whereas RSA, ECC, and Diffie-Hellman are asymmetric.

Question 11

In TLS, what is the primary purpose of asymmetric cryptography during the handshake?

Accepted Answer

Asymmetric cryptography in the handshake is used to authenticate and securely negotiate a symmetric session key, which then encrypts the bulk data efficiently.

Question 12

You capture the hash $2y$10$N9qo8uLOickgx2ZMRZoMy... What algorithm produced it, and why is it resistant to brute force?

Accepted Answer

The $2y$ prefix identifies bcrypt, whose adjustable cost factor and built-in salt deliberately slow hashing to resist brute-force and rainbow-table attacks.

Question 13

Which port does the SMB protocol most commonly use on modern Windows systems?

Accepted Answer

Modern SMB runs directly over TCP port 445, while port 139 is the legacy NetBIOS session service.

Question 14

In an Active Directory Kerberoasting attack, what does the attacker request and then crack offline?

Accepted Answer

Kerberoasting requests TGS tickets for accounts with SPNs; those tickets are encrypted with the service account's password hash, which can be cracked offline to recover the plaintext password.

Question 15

An attacker forges a Kerberos TGT using the compromised KRBTGT account hash to gain persistent, arbitrary domain access. What is this attack called?

Accepted Answer

A Golden Ticket forges a TGT signed with the KRBTGT hash, letting the attacker impersonate any user with domain-wide privileges, whereas a Silver Ticket forges only a service-specific TGS.

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