INFORMATİON TECHNOLOGİES - Deneme Sınavı - 5

The answer is C

Since the understandings of privacy has been started to shape from the date when the first technology was introduced to the human life, it involves protection of your home and personal possessions in this era. In addition, it was also defined as the right of people to determine when, and what extent of information about them is communicated to others while the processors of the computers were improving. The correct answer is A.

The answer is C.

The answer is E. Preparing brochures explaining how to use the products is not main function of trademarks.

Adversary is any person, group or force that may intentionally infringe on the integrity, confidentiality and availability of information. Correct answer is C.

There are three important goals of security as confidentiality, availability and integrity.  Privacy can not be shown among the goals of security. Correct answer is D.

There are mainly two categories of cryptographic algorithms, symmetric and public key (asymmetric) cryptographic algorithms. Symmetric cryptography uses only one shared key. Sender and receiver agree on a key and encrypts and decrypt the messages using this key, respectively. The same key is used to encrypt and decrypt the data. Contrarily, public key cryptography requires two different keys, private key that is only known by the owner and public key that is delivered anyone freely. Data encrypted by the public key can only be decrypted by its private key counterpart. Correct answer is A.

Since each of the participiants has a key pair in which one of the keys is public and the other one is private, the communication between participiants are provided with public key cryptography.  Data encrypted by the private key can only be decrypted by its public key counterpart. Data encrypted with a public key can only be decrypted with its private key. If John encrypts a message with his private key both July and Mary can decrypt the message. Because they know John's public key. If John encypts a message with Mary's public key, only Mary can decrypt the message. If John takes a message encrypted by his public key, the message may be sent by either Mary or July because both of them know John's public key. Correct answer is A.

Username is not a way of proving that a person who he/she claims that he/she is. Username is the identification process. Using password, authentication can be provided. Another type of authentication is showing something about one’s identity, such as a national identity card, driver’s license, and smart card. One can also authenticate using biometrics. When someone uses his/her biometrics, he/she must first identify himself/herself then submit his biometric information such as a fingerprint or an iris scan. Correct answer is B.

A risk in a computer security can be anything on the computer that may harm or copy the data, or allow one to access the computer without anyone’s knowledge. Simply, risk is the intersection of assets, threats, and vulnerabilities. Correct answer is E.

Possible actions in risk management is eliminating or mitigating risk, assigning risk to a third party or transferring risk and accepting risk.  Suppose that the risk management has same set of actions for a computer based system that is connected to the Internet. There are numerous vulnerabilities in such a system so that malicious intruders can harm the system. Thus, the risk in this system is very high especially if the data is sensitive. To eliminate the risk, employing strong security primitives, e.g., installing an antivirus program, enabling a firewall and using trusted hardware and software will help to mitigate the risk. Again, transferring this risk to a third party is possible. Security can be guaranteed by a secure network service provider. For some situations, the system has to accept the risk since some websites provides minimal security that might lead a potential data loss or harm. Correct answer is C.

A Trojan horse creates an environment that allows its programmer to open a certain channel on the system, allowing the attacker to monitor or control the infected user’s system. Correct answer is D.

Opening e-mails from someone you do not know may harm your computer security. Correct answer is B.

Security is a degree of protection of computer hardware and software from intentional or unintentional changes, uses, spoofing, spread of information over unauthorized people. Correct answer is C.

Electronic funds transfer (EFT): EFT is the electronic transfer of money from one bank account to another via computer-based systems without the direct intervention of bank staff.

Business-to-Business (B2B)

Business-to-Consumer (B2C)

Consumer-to-Consumer (C2C)

Consumer-to-Business (C2B)

Business-to-Government (B2G)

Government-to-Business (G2B)

Government-to-Consumer (G2C)

Business-to-Business (B2B)

Business-to-Consumer (B2C)

Consumer-to-Consumer (C2C)

Consumer-to-Business (C2B)

Business-to-Government (B2G)

Government-to-Business (G2B)

Government-to-Consumer (G2C)

Business-to-Business (B2B)

Business-to-Consumer (B2C)

Consumer-to-Consumer (C2C)

Consumer-to-Business (C2B)

Business-to-Government (B2G)

Government-to-Business (G2B)

Government-to-Consumer (G2C)

Business-to-Business (B2B)

Business-to-Consumer (B2C)

Consumer-to-Consumer (C2C)

Consumer-to-Business (C2B)

Business-to-Government (B2G)

Government-to-Business (G2B)

Government-to-Consumer (G2C)

Amazon.com was one of the first companies using B2C e-commerce model.