Kunci Jawaban Cisco IT Essentials chapter 9

Chapter 09 – IT Essentials

01. How can web tools, such as Java or ActiveX , be used for a malicious atack ?

• by altering the interactivity level of a web page;
• by creating popup windows;
• by causing the web browser to crash , leaving the system vulnerable ;
• by instaling unwanted programs on a computer .

02. Which precaution helps against social engineering in the workplace ?

• disclosing passwords to company personnel only ;
• guiding visitors within the premises and escorting them personally when they leave ;
• keeping hidden from public view any passwords that are posted in the work area ;
• sharing access cards with other employees.

03. Why should everyone in an organization give high priority to computer and network security?

• because antivirus software often does not work ;
• because computer and network security is included in every job description ;
• because everyone can be affected by computer and network security problems ;
• because computer and network security is the primary responsibility of every employer.

04. A technician has downloaded the latest Windows XP updates from Microsoft website . What should the technician do before installing the updates ?

• create a restore point ;
• manually update the Last Known Good Configuration;
• reinstall the antivirus software ;
• change the firewall rules to enable the instalier to access port 8900 of the Microsoft server .

05. Which two actions improve security on a wireless network ? (Choose two .)

• enable WEP ;
• broadcast the default SSID ;
• keep the default administrator password for the access point ;
• enable MAC filtering .

06. What condition can allow unauthorized access to a network for users who are not physically connected to the network ?

• exposed network cables ;
• active jacks in public areas ;
• poor wireless device security ;
• unattended PCs that are logged into the network .

07. What must be done to ensure that the antivirus software on a computer is able to detect and eradicate the most recent viruses ?

• download the latest signature files on a regular basis ;
• schedule a scan once a week ;
• schedule antivirus updates using windows task manager ;
• follow the firewall configuration guidelines on the antivirus manufacturer website .

08. A computer that is configured for automatic updates is shut down during a scheduled updates . However , the update is downloaded successfully without any file being corrupted in the process . What will happen to the update as a result of this shutdown ?

• no cation for downloading available will be displawed when the computer is rebooted ;
• the update will be lost ;
• the update for the computer will be queved on the website ;
• the update will be installed as soon as the computer is powered on.

09. What is a signature as the term is used in antivirus and antispyware software development ?

• a system restore point ;
• a software removal tool ;
• an operating system patch ;
• a programming code pattern .

10. Which security device stores user physical characteristics to provide a user level of facility access ?

• a biometric sensor ;
• a card key ;
• a key fob ;
• a smart card .

11. Which three questions should be addressed by organizations developing a security policy? ( Choose three )

• what items need to be protected ?
• how should the items be protected ?
• what is to be done in the case of a security breach ?
• when do the items need protecting ?
• what insurance coverage is required ?
• what are the possible threats to the items .

12. What are two important outcomes of good computer and network security? ( Choose two )

• keep equipment functioning;
• expose confidential information ;
• allow unrestricted network access ;
• reduce available network resources ;
• provide access only to authorized users.

13. For troubleshooting security problems , what should be done immediately after the exact cause of the problem is determined ?

• document the endings ;
• verify full system functionally ;
• establish a theory of probable causes ;
• establish a plan of action for resolution .

14. A large number of e-mail messages are appearing in the inbox of a home computer user . The messages relate to products for which the user has never requested information . which name is given to this type of e-mail ?

• spoof ;
• adware ;
• grayware ;
• spam.

15. Which two questions are examples of open ended questions that could be used in the security troubleshooting process ? ( Choose two ).

• have you sharred your password ?
• is your security software up to date ?
• what problems are you experiencing?
• what websites have you visited recently ?
• have you scanned your computer recently for viruses ?

16. What are two examples of malware ? ( Choose two )

• registry cleaner ;
• pop up blocker ;
• spyware ;
• e-mail ;
• grayware .

17. Which best practice should be included in a password protection policy ?

• encourage users to document passwords in a personal file;
• enforce passwors protection at the BIOS level;
• implement lockout rules upon consecutive unsuccessful attempts at accessing the system ; Passwords should contain a mixture of letters and numbers so that they cannot easily be broken;
• restrict passwords to text-based strings .

18. A company network was subjected to several security attacks after TCP/IP had been installed on the company computers . Analysys has shown that in most of the attacks , attackers used network sniffers to extract user names and passwords of critical accounts on the network. Which type of TCP/ip attack did these attackers deploy ?

• denial of service;
• ping of death ;
• replay;
• SYN food .

19. Refer to the exhibit . What is the correct order for the steps in the troubleshooting process ?

• 2,4,5,3,1,6 ;
• 2,5,4,3,6,1, ;
• 5,4,2,3,6,1 ;
• 3,5,4,2,6,1 .

20. At which step of the troubleshooting process will a computer technician ask the customer a series of open-ended and closed-ended questions ?

• document findings ;
• identify the problem ;
• implement a solution ;
• determine an exact.

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