You work as a Network Administrator for NetTech Inc. The company has a Windows Server 2008 Active Directory-based single domain single forest network. The company's network is connected to the Internet through a T1 line. The firewall is configured on the network for securing the internal network from the intruders on the Internet. You are designing a public key infrastructure (PKI) for the network. The network will use a root enterprise certificate authority (CA) and two subordinate CAs. The root CA will be used to issue certificates to the subordinate CAs, and the subordinate CAs will be used to issue certificates to the clients. The security policy of the company dictates that the security of high-level CAs should not be compromised. Which of the following steps will you take to implement the security policy of the company?

Maria has been recently appointed as a Network Administrator in Gentech Inc. She has been tasked to perform network security testing to find out the vulnerabilities and shortcomings of the present network infrastructure. Which of the following testing approaches will she apply to accomplish this task?

Which of the following types of attacks cannot be prevented by technical measures only?

You are the project manager for your organization and are trying to determine which vendor your organization will use. You have determined that any vendor that would like to bid on your project work will need to have a Microsoft Certified System Engineer on staff, have eight years of Cisco experience, and have at least two references from similar projects. What have you created in this scenario?

A sequence number is a 32-bit number ranging from 1 to 4,294,967,295. When data is sent over the network, it is broken into fragments (packets) at the source and reassembled at the destination system. Each packet contains a sequence number that is used by the destination system to reassemble the data packets in the correct order. The Initial Sequence Number of your computer is 24171311 at login time. You connect your computer to a computer having the IP address 210.213.23.21. This whole process takes three seconds. What will the value of the Initial Sequence Number be at this moment?