CREST CPSA || All Answers are Flawless.
Ethernet OSI layer?* correct answers Layer 2, Data Link
IPv4 / IPv6, routing protocols OSI layer?* correct answers Layer 4, Network
ICMP replies* correct answers Request
Echo Request
Timestamp Request
Address Mask Request
Message
Echo reply
Destination unreachable
Redirect
Time exceeded
Parameter problem
Source quench
Private Addresses* correct answers Class A - 10.0.0.0 /8
Class B - 172.16.0.0 /12
Class C - 192.168.0.0 /16
Wireless IEEE correct answers 802.11
Examples or Shared Media correct answers facebook, instagram or any publicly available
information
,VLAN vulnerabilities correct answers VLAN hopping
VLAN tagging
What is Token Ring? correct answers basically like a circle where one host is only connected to 2
hosts
File transfer using netcat* correct answers Sender
nc <host> <port> < file
Receiver
nc -l <port> > file
Ingress Filtering correct answers filter inbound traffic
Egress Filtering correct answers filter outbound traffic
RSA key length correct answers 1024, 2048, 4096 bits
RC4 key length correct answers 40 - 2048 bits
DES key length correct answers 56 bits
3DES key length correct answers 56 x 3 = 168 bits
AES key length correct answers 128, 192, 256 bits
, SHA1 hash length correct answers 40 characters
MD5 hash length correct answers 32 hexadecimal characters
Example
84e5f5b9dad87e723b37de2e5c4cf072
What is a Symmetric key? correct answers uses 1 key to both encrypt and decrypt
What is an Asymmetric key? correct answers uses 1 key to encrypt and another key to decrypt
What is HMAC? correct answers mixes public and private keys and hashes them
HMAC full form* correct answers hash-based message authentication code
IPSec port? correct answers Udp 500
What is IPSec? correct answers adds encryption and authentication
PPTP full form correct answers point-to-point tunneling protocol
PPTP port correct answers Tcp 1723
PGP Full form correct answers pretty good privacy
What is PGP? correct answers sends and authenticate encrypted emails and files
WEP full form correct answers wired equivalent privacy
Ethernet OSI layer?* correct answers Layer 2, Data Link
IPv4 / IPv6, routing protocols OSI layer?* correct answers Layer 4, Network
ICMP replies* correct answers Request
Echo Request
Timestamp Request
Address Mask Request
Message
Echo reply
Destination unreachable
Redirect
Time exceeded
Parameter problem
Source quench
Private Addresses* correct answers Class A - 10.0.0.0 /8
Class B - 172.16.0.0 /12
Class C - 192.168.0.0 /16
Wireless IEEE correct answers 802.11
Examples or Shared Media correct answers facebook, instagram or any publicly available
information
,VLAN vulnerabilities correct answers VLAN hopping
VLAN tagging
What is Token Ring? correct answers basically like a circle where one host is only connected to 2
hosts
File transfer using netcat* correct answers Sender
nc <host> <port> < file
Receiver
nc -l <port> > file
Ingress Filtering correct answers filter inbound traffic
Egress Filtering correct answers filter outbound traffic
RSA key length correct answers 1024, 2048, 4096 bits
RC4 key length correct answers 40 - 2048 bits
DES key length correct answers 56 bits
3DES key length correct answers 56 x 3 = 168 bits
AES key length correct answers 128, 192, 256 bits
, SHA1 hash length correct answers 40 characters
MD5 hash length correct answers 32 hexadecimal characters
Example
84e5f5b9dad87e723b37de2e5c4cf072
What is a Symmetric key? correct answers uses 1 key to both encrypt and decrypt
What is an Asymmetric key? correct answers uses 1 key to encrypt and another key to decrypt
What is HMAC? correct answers mixes public and private keys and hashes them
HMAC full form* correct answers hash-based message authentication code
IPSec port? correct answers Udp 500
What is IPSec? correct answers adds encryption and authentication
PPTP full form correct answers point-to-point tunneling protocol
PPTP port correct answers Tcp 1723
PGP Full form correct answers pretty good privacy
What is PGP? correct answers sends and authenticate encrypted emails and files
WEP full form correct answers wired equivalent privacy
