Which of the following layers of TCP/IP model is used to move packets between the Internet Layer interfaces of two different hosts on the same link?

• A.Link layer
• B.Transport Layer
• C.Application layer
• D.Internet layer

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You have forgotten your password of an online shop. The web application of that online shop asks you to enter your email so that they can send you a new password. You enter your email [email protected]' and press the submit button. The Web application displays the server error.
What can be the reason of the error?

• A.The remote server is down.
• B.You have entered any special character in email.
• C.Your internet connection is slow.
• D.Email entered is not valid.

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Which of the following is a method of gathering user names from a Linux system?

• A.Displaying the owner information of system-specific binaries
• B.Reviewing the contents of the system log files
• C.Gathering listening services from the xinetd configuration files
• D.Extracting text strings from the system password file

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Which of the following is a Windows-based tool that is used for the detection of wireless LANs using the IEEE
802.11a, 802.11b, and 802.11g standards and also detects wireless networks marking their relative position with a GPS?

• A.Ettercap
• B.Tcpdump
• C.Kismet
• D.NetStumbler

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Which of the following nmap switches is used to perform NULL scan?

• A.-sO
• B.-sN
• C.-sP
• D.-sU

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