Q21easyWhat is a "Half-Open" connection?AA connection using both TCP and UDP.BA connection that is currently downloading.CA connection where one side has closed it, but the other side is unaware and still sending data.DA connection that is encrypted.Check AnswerReveal Answer & ExplanationDiscuss on Board
Q22easyWhich port range is designated as Registered Ports?A0-65535B0-1023C49152-65535D1024-49151Check AnswerReveal Answer & ExplanationDiscuss on Board
Q23easyWhat is the main purpose of Port 22?ASMTPBSSH (Secure Shell)CHTTPDFTPCheck AnswerReveal Answer & ExplanationDiscuss on Board
Q24mediumA SYN-Flood attack involves an attacker sending thousands of SYN packets. What does the server do with these requests?ARedirects the attacker to a honeypot.BAllocates a TCB (Transmission Control Block) and waits for an ACK that never comes, exhausting resources.CSends back encrypted data.DRejects them immediately.Check AnswerReveal Answer & ExplanationDiscuss on Board
Q25easyWhat is the Nagle Algorithm?AAn algorithm that buffers small outgoing packets to combine them into one larger segment, reducing network overhead.BA way to detect deadlocks.CAn algorithm to prioritize large packets.DA decryption algorithm.Check AnswerReveal Answer & ExplanationDiscuss on Board