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- (Topic 3)
Sarah works as a Web Developer for XYZ CORP. She develops a Web site for the company. She uses tables in the Web site. Sarah embeds three tables within a table. What is the technique of embedding tables within a table known as?
Correct Answer:A
In general, nesting means embedding a construct inside another. Nesting tables is a technique in which one or more tables are embedded within a table. Answer B, C, D are incorrect. There are no techniques such as stacking tables, horned tables, or CSS tables.
- (Topic 2)
One of the sales people in your company complains that sometimes he gets a lot of unsolicited messages on his PD A. After asking a few questions, you determine that the issue only occurs in crowded areas like airports. What is the most likely problem?
Correct Answer:D
Blue jacking is the process of using another bluetooth device that is within range (about 30' or less) and sending unsolicited messages to the target. Answer B is incorrect. Blue snarfing is a process whereby the attacker actually takes control of the phone. Perhaps copying data or even making calls. Answer C is incorrect. A virus would not cause unsolicited messages. Adware might, but not a virus. Answer A is incorrect. Spam would not be limited to when the person was in a crowded area.
- (Topic 3)
You work as a Network Administrator for Tech Perfect Inc. The company requires a secure wireless network. To provide security, you are configuring ISA Server 2006 as a firewall. While configuring ISA Server 2006, which of the following is NOT necessary?
Correct Answer:D
Configuration of VPN access is not mandatory. It is configured on the basis of requirement. Answer A, B, C are incorrect. All these steps are mandatory for the configuration of the ISA Server 2006 firewall.
- (Topic 1)
Mark works as a project engineer in Tech Perfect Inc. His office is configured with Windows XP-based computers. The computer that he uses is not configured with a default gateway. He is able to access the Internet, but is not able to use e-mail services via the Internet. However, he is able to access e-mail services via the intranet of the company. Which of the following could be the reason of not being able to access e-mail services via the Internet?
Correct Answer:A
A proxy server exists between a client's Web-browsing program and a real Internet server. The purpose of the proxy server is to enhance the performance of user requests and filter requests. A proxy server has a database called cache where the most frequently accessed Web pages are stored. The next time such pages are requested, the proxy server is able to suffice the request locally, thereby greatly reducing the access time. Only when a proxy server is unable to fulfill a request locally does it forward the request to a real Internet server. The proxy server can also be used for filtering user requests. This may be done in order to prevent the users from visiting non-genuine sites. Answer D is incorrect. Transmission Control Protocol/Internet Protocol (TCP/IP) is a suite of standard protocols that govern how data passes between networks. It can be used to provide communication between the basic operating systems on local and wide-area networks (WANs). TCP/IP is the basic communication language or protocol of the Internet. It can also be used as a communications protocol in a private network (either an intranet or an extranet). It is considered the primary protocol of the Internet and the World Wide Web. Answer B is incorrect. IP packet filters allow or block packets from passing through specified ports. They can filter packets based on service type, port number, source computer name, or destination computer name. When packet filtering is enabled, all packets on the external interface are dropped unless they are explicitly allowed, either statically by IP packet filters or dynamically by access policy or publishing rules. Answer C is incorrect. A router is a device that routes data packets between computers in different networks. It is used to connect multiple networks, and it determines the path to be taken by each data packet to its destination computer. A router maintains a routing table of the available routes and their conditions. By using this information, along with distance and cost algorithms, the router determines the best path to be taken by the data packets to the destination computer. A router can connect dissimilar networks, such as Ethernet, FDDI, and Token Ring, and route data packets among them. Routers operate at the network layer (layer 3) of the Open Systems Interconnection (OSI) model.
- (Topic 4)
Which TCP and UDP ports can be used to start a NULL session attack in NT and 2000 operating systems?
Correct Answer:C
A null session is an anonymous connection to a freely accessible network share called IPC$ on Windows-based servers. It allows immediate read and write access with Windows NT/2000 and read-access with Windows XP and 2003. The command to be inserted at the DOS-prompt is as follows: net use \\IP address_or_host name\ipc$ "" "/user:" net use Port numbers 139 TCP and 445 UDP can be used to start a NULL session attack.