Answer:
True is the correct Answer for the above question.
Explanation:
- Computer security is a security in which data of the computer is secured from the access of unauthorized users. It is primarily achieved to stop the access grant to the unauthorized user.
- It means that there is an authorization point which decides that the user is authorized or not. If the user is authorized then only he can enter the system otherwise he can not able to enter the system.
- It helps to secure the data and the data is the important point of the computer system.
- The question also states the same which is described above. Hence true is the correct answer.
First three bytes of the ethernet address exists assigned to vendors to identify the equipment.
<h3>What is Ethernet address?</h3>
A media access control address stands for a unique identifier allocated to a network interface controller for usage as a network address in communications within a network segment. This use exists as standard in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth.
This address exists as the identifying mark that allows a networked computer to communicate with the Internet. The ethernet address exists how we can associate an “IP address” to an individual computer — without this– number, there's no form to access any servers, websites, email, etc.
The first three bytes (pairs of hexadecimal characters) of any unicast address include that vendor address component of the MAC address. The staying three bytes carry the serial number of that vendor's interface card. Dell, Inc. Apple, Inc.
Hence, first three bytes of the ethernet address exists assigned to vendors to identify the equipment.
To learn more about Ethernet address refer to:
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Answer:
1. Where,
2. From
Explanation:
In SQL query language when working on a database, a user can use certain clauses to carry out some functions.
Hence, The WHERE clause allows us to select only those rows in the result relation of the FROM clause that satisfy a specified predicate.
This is because the "Where clause" selects the rows on a particular condition. While the "From clause" gives the relation which involves the operation.
