In which layer of the OSI model does a sniffer operate?

• A.Network layer
• B.Data link layer
• C.Presentation layer
• D.Session layer

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John works as a professional Ethical Hacker. He has been assigned a project to test the security of www.we-are-secure.com. He enters the following command on the
Linux terminal:chmod 741 secure.c
Considering the above scenario, which of the following statements are true?
Each correct answer represents a complete solution. Choose all that apply.

• A.John is providing all rights to the owner of the file.
• B.The textual representation of the file access permission of 741 will be -rwxr--rw-.
• C.By the octal representation of the file access permission, John is restricting the group members to only read the secure.c file.
• D.John is restricting a guest to only write or execute the secure.c file.

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You want to perform passive footprinting against we-are-secure Inc. Web server. Which of the following tools will you use?

• A.Netcraft
• B.Ettercap
• C.Nmap
• D.Ethereal

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While reviewing traffic from a tcpdump capture, you notice the following commands being sent from a remote system to one of your web servers:
C:\>sc winternet.host.com create ncservicebinpath- "c:\tools\ncexe -I -p 2222 -e cmd.exe"
C:\>sc vJnternet.host.com query ncservice.
What is the intent of the commands?

• A.This creates a service called ncservice which is linked to the cmd.exe command andits designed to stop any instance of nc.exe being run. The second command verifiesthe service is created and its status.
• B.The first command verifies the service is created and its status. The secondcommand creates a backdoor shell as a service. It is being started on TCP 2222connected to cmd.exe.
• C.The first command creates a backdoor shell as a service. It is being started on TCP2222 using cmd.exe. The second command verifies the service is created and itsstatus.
• D.The first command creates a backdoor shell as a service. It is being started on UDP2222 using cmd.exe. The second command verifies the service is created and itsstatus.

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Which of the following is a passive information gathering tool?

• A.Ettercap
• B.Nmap
• C.Whois
• D.Snort

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