What type of firewall tracks the state of active network connections and makes filtering decisions based on the context of the entire TCP conversation?
Stateful firewalls maintain a state table tracking active TCP streams, matching inbound return packets to authorized outbound sessions automatically.
In symmetric block ciphers, the Advanced Encryption Standard (AES) encrypts data in blocks of what size?
AES has a fixed block size of 128 bits (16 bytes) and supports key sizes of 128, 192, or 256 bits.
Which attack intercepts and potentially alters communication between two parties who believe they are communicating directly with each other?
In an MITM attack (e.g. via ARP spoofing or rogue Wi-Fi APs), the adversary transparently relays and potentially modifies traffic between communicating endpoints.
What does the 'S' in HTTPS stand for?
HTTPS stands for HyperText Transfer Protocol Secure, denoting HTTP layered over TLS/SSL encryption.
What is the primary role of DHCP Option 82 in enterprise switched networks?
DHCP Option 82 is the Relay Agent Information Option. Relay agents can insert information such as circuit-id and remote-id, allowing the DHCP server to identify where the client request entered the network. Thus A and B are correct.