- (Topic 3)
John works as a Network Administrator for Perfect Solutions Inc. The company has a Linux-based network. John is working as a root user on the Linux operating system. He
executes the following command in the terminal: echo $USER, $UID Which of the following will be displayed as the correct output of the above command?
Correct Answer:
B
According to the scenario, John is a root user. Hence, the value of the environmental variables $USER and $UID will be root and 0, respectively.
- (Topic 1)
Anonymizers are the services that help make a user's own Web surfing anonymous. An anonymizer removes all the identifying information from a user's computer while the user surfs the Internet. It ensures the privacy of the user in this manner. After the user anonymizes a Web access with an anonymizer prefix, every subsequent link selected is also automatically accessed anonymously. Which of the following are limitations of anonymizers?
Correct Answer:
ABCDE
Anonymizers have the following limitations: 1.HTTPS: Secure protocols such as 'https:' cannot be properly anonymized, as the browser needs to access the site directly to properly maintain the secure encryption. 2.Plugins: If an accessed site invokes a third-party plugin, there is no guarantee of an established independent direct connection from the user computer to a remote site. 3.Java: Any Java application accessed through an anonymizer will not be able to bypass the Java security wall. 4.ActiveX: ActiveX applications have almost unlimited access to the user's computer system. 5.JavaScript: The JavaScript scripting language is disabled with URL-based anonymizers.
- (Topic 3)
Which of the following methods can be helpful to eliminate social engineering threat? (Choose three)
Correct Answer:
BCD
The following methods can be helpful to eliminate social engineering threat: Password policies Vulnerability assessments Data classification Password policy should specify that how the password can be shared. Company should implement periodic penetration and vulnerability assessments. These assessments usually consist of using known hacker tools and common hacker techniques to breach a network security. Social engineering should also be used for an accurate assessment. Since social engineers use the knowledge of others to attain information, it is essential to have a data classification model in place that all employees know and follow. Data classification assigns level of sensitivity of company information. Each classification level specifies that who can view and edit data, and how it can be shared.
- (Topic 4)
You work as a Database Administrator for XYZ CORP. The company has a multi-platform network. The company requires fast processing of the data in the database of the company so that answers to queries can be generated quickly. To provide fast processing, you have a conceptual idea of representing the dimensions of data available to a user in the data cube format. Which of the following systems can you use to implement your idea?
Correct Answer:
B
A multidimensional database management system (MDDBMS) implies the ability to rapidly process the data in the database so that answers to the queries can be generated quickly. A number of vendors provide products that use multidimensional databases. The approach behind this system is to manage that how data should be stored in the database, and depending upon that storage, how user interface should vary. Conceptually, an MDDBMS uses the idea of a data cube to represent the dimensions of data available to a user. For example, "sales" could be viewed in the dimensions of product model, geography, time, or some additional dimension. In this case, "sales" is known as the measure attribute of the data cube and the other dimensions are seen as feature attributes. Additionally, a database creator can define hierarchies and levels within a dimension (for example, state and city levels within a regional hierarchy). Answer C is incorrect. A federated database system is a type of meta-database management system (DBMS) that transparently integrates multiple autonomous database systems into a single federated database. The constituent databases are interconnected via a computer network, and may be geographically decentralized. Since the constituent database systems remain autonomous, a federated database system is a contrastable alternative to the (sometimes daunting) task of merging together several disparate databases. A federated database (or virtual database) is the fully-integrated, logical composite of all constituent databases in a federated database system. Answer A is incorrect. SYSDBA is a system privilege that allows a user to perform basic database administrative tasks, such as creating a database, altering a database, starting up and shutting down an Oracle instance, performing time- based recovery etc. The SYSDBA contains all system privileges with the ADMIN OPTION. It also contains the SYSOPER system privilege. Granting the SYSDBA system privilege to a user automatically adds him to the password file that is used to authenticate administrative users. Therefore, a user possessing the SYSDBA system privilege can connect to a database by using the password file authentication method. Answer D is incorrect. A hierarchical database is a database management system that implements the hierarchical data model. A hierarchical database system organizes data in a family tree structure such that each record has only one owner and the hierarchy is in a parent and child data segment. This implies that the record can have repeated information in a child segment. The best-known hierarchical DBMS is IMS.
- (Topic 1)
Which of the following is the default port for Hypertext Transfer Protocol (HTTP)?
Correct Answer:
C
Hypertext Transfer Protocol (HTTP) is a client/server TCP/IP protocol used on the World Wide Web (WWW) to display Hypertext Markup Language (HTML) pages. HTTP defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands. For example, when a client application or browser sends a request to the server using HTTP commands, the server responds with a message containing the protocol version, success or failure code, server information, and body content, depending on the request. HTTP uses TCP port 80 as the default port. Answer B is incorrect. Port 443 is the default port for Hypertext Transfer Protocol Secure (HTTPS) and Secure Socket Layer (SSL). Answer A, D are incorrect. By default, FTP server uses TCP port 20 for data transfer and TCP port 21 for session control.