CREST CPSA LATEST 2026 EXAMS TEST QUESTIONS AND ANSWERS GUARANTEE A.pdf

CREST CPSA LATEST 2026 EXAMS TEST QUESTIONS AND
ANSWERS GUARANTEE A+
✔✔X11 - ✔✔A windowing system for bitmap displays, common on Unix-like operating
systems. Provides the basic framework for a GUI environment: drawing and moving
windows on the display device and interacting with a mouse and keyboard.

✔✔Port 6129 - ✔✔DameWare

✔✔DameWare - ✔✔Remote Access Software on port 6129

✔✔Port 6667 - ✔✔IRC (Internet Relay Chat)

✔✔Port 9001 - ✔✔Tor

✔✔Port 9001 - ✔✔HSQL

✔✔Port 9090 - ✔✔Openfire

✔✔Port 9100 - ✔✔Jet Direct

✔✔Yersinia - ✔✔Layer 2 testing tool (STP, CDP, VLAN Trunking, etc)

✔✔STP - ✔✔Spanning Tree Protocol

✔✔CDP - ✔✔Cisco Discovery Protocol

✔✔DTP - ✔✔Dynamic Trunking Protocol

✔✔HSRP - ✔✔Hot Standby Router Protocol

✔✔VTP - ✔✔VLAN Trunking Protocol

✔✔fgdump - ✔✔A utility for dumping passwords on Windows NT/2000/XP/2003
machines

✔✔Reserved Internal IPs - ✔✔10.0.0.0/8 (10.0.0.0-10.255.255.255) : Private

127.0.0.0/8 (127.0.0.0-127.255.255.255) : Local Host Loopback

172.16.0.0/12 (172.16.0.0-172.31.255.255) : Private

192.168.0.0/16 (192.168.0.0-192.168.255.255) : Private

,✔✔Symmetric Encryption - ✔✔DES/3DES
AES
Twofish
Blowfish
Serpent
IDEA
RC4, RC5, RC6
CAST

✔✔Asymmetric Encryption - ✔✔RSA
El Gamal
ECC Eliptic Curve
Diffie-Helman (Key Exchange)
Paillier
Merkle-Helman
Cramer-Shoup

✔✔Hashes - ✔✔MD5
SHA1
MySQL < 4.1
MySQL5
MD5 (WP)
MD5 (phpBB3)
LM / NTLM

✔✔Oracle Default Credentials - ✔✔--Username | Password--
SYSTEM | MANAGER
ANONYMOUS | ANONYMOUS
SCOTT | TIGER
OLAPSYS | MANAGER
SYS | CHANGE_ON_INSTALL

✔✔Port 512 - ✔✔rexec (username / password)

✔✔Port 513 - ✔✔rlogin (telnet)

✔✔Port 514 - ✔✔rsh

✔✔Port 514 - ✔✔rcp

✔✔LM Hash - ✔✔Primary Windows LAN hash before Windows NT. 14 character limit.

✔✔DES - ✔✔56 bit key encryption (16 cycles of 48 bit subkeys)

✔✔3DES - ✔✔168 bit key encryption (48 cycles)

, ✔✔TTL for Windows - ✔✔128

✔✔TTL for Linux - ✔✔64

✔✔TTL for Networking Devices / Solaris - ✔✔255

✔✔Cisco Password Encryption - ✔✔secret 4 : Crappy SHA256
secret 5 : Salted MD5
secret 7: Crappy Cisco encryption to prevent cleartext in the config
secret 8 : PBKDF2 (Password-Based Key Derivation Function 2) *bruteforce target*
secret 9 : scrypt (BINGO)

✔✔SIP Requests - ✔✔INVITE
ACK
BYE
CANCEL
OPTIONS
REGISTER
PRACK
SUBSCRIBE
NOTIFY
PUBLISH
INFO
REFER
MESSAGE
UPDATE

✔✔SMTP Requests - ✔✔MAIL
RCPT
DATA

✔✔SNMP Requests - ✔✔Get
GetNext
Set
GetBulk
Response
Trap
Inform

✔✔HTTP Status Codes - ✔✔1xx - Info
2xx - Success
3xx - Redirection
4xx - Error
5xx - Server Error