H12-811_V1.0 Exam Dumps - HCIA-Datacom V1.0 Exam

Comprehensive Explanation: WEP (Wired Equivalent Privacy) is the only security policy in this list that supports open link authentication, which means no actual user credentials are required to associate with the network. WEP uses a shared key for encryption but offers minimal protection and is considered insecure. Other security methods like WPA, WPA2-PSK, and WPA2-802.1X use more secure forms of authentication, requiring credentials such as a password or centralized authentication server.

Detailed Explanation:The protocol number for TCP in the IPv4 header is 6. Since Telnet uses TCP as its transport layer protocol, the protocol field in the IPv4 header will contain the value 6​​.

Detailed Explanation:The TCP protocol ensures reliable data transmission by using a three-way handshake to establish a connection and a four-way handshake to terminate it. This handshake process helps ensure that both parties are synchronized and agree on communication parameters before data transmission begins. Additionally, mechanisms such as sequence numbers and acknowledgments ensure that data is received correctly and in order .