CREST CPSA 2025 EXAM| Questions and Answers, 100% Correct

CREST CPSA 2025 EXAM| Questions and Answers, 100% Correct Ethernet OSI layer?* Layer 2, Data Link IPv4 / IPv6, routing protocols OSI layer?* Layer 4, Network ICMP replies* Request Echo Request Timestamp Request Address Mask Request Message Echo reply Destination unreachable Redirect Time exceeded Parameter problem Source quench Private Addresses* Class A - 10.0.0.0 /8 Class B - 172.16.0.0 /12 Class C - 192.168.0.0 /16 Wireless IEEE 802.11 Examples or Shared Media facebook, instagram or any publicly available information VLAN vulnerabilities VLAN hopping VLAN tagging What is Token Ring? basically like a circle where one host is only connected to 2 hosts File transfer using netcat* Sender nc host port file Receiver nc -l port file Ingress Filtering filter inbound traffic Egress Filtering filter outbound traffic RSA key length 1024, 2048, 4096 bits RC4 key length 40 - 2048 bits DES key length 56 bits