Tamoban Javnoi COMPUTER SCIENCE & IT   -   Computer Networks & Security

Where is the most secure location to place a firewall within a network architecture?

Placing a firewall between the router and the internal network is the most secure location because it allows the firewall to filter both incoming and outgoing traffic, protecting the internal network from external threats while also providing control over outgoing traffic.
Tamoban Javnoi COMPUTER SCIENCE & IT   -   Computer Networks & Security

When should an organization implement two-factor authentication (2FA) for remote access to its network resources?

Two-factor authentication (2FA) should be implemented whenever employees work remotely or access sensitive data to add an extra layer of security beyond just passwords. It helps mitigate the risk of unauthorized access, especially when accessing critical systems from outside the corporate network.
Tamoban Javnoi COMPUTER SCIENCE & IT   -   Computer Networks & Security

What is the purpose of a subnet mask in IP networking?

A subnet mask is used to divide an IP address into network and host portions. It determines which part of the IP address represents the network ID and which part represents the host ID, allowing routers to determine the destination network for data forwarding.
Tamoban Javnoi COMPUTER SCIENCE & IT   -   Database Management Systems

Which type of database index is typically used to improve the speed of queries that involve range searches?

B-tree indexes are typically used to improve the speed of queries that involve range searches because they maintain the sorted order of data. This makes it efficient to search for a range of values, as the B-tree structure allows for quick navigation to the starting point of the range and sequential access to the subsequent entries.
Tamoban Javnoi COMPUTER SCIENCE & IT   -   Database Management Systems

How to ensure ACID properties are maintained in a transaction?

To ensure ACID (Atomicity, Consistency, Isolation, Durability) properties are maintained in a transaction, it is essential to use the transaction management features provided by the database management system. These features ensure that all operations within a transaction are completed successfully and consistently, even in the event of a failure.
Tamoban Javnoi COMPUTER SCIENCE & IT   -   Database Management Systems

Where would you typically find the definition of a database schema?

The definition of a database schema, which includes the structure of the tables, fields, and relationships, is stored in the database management system's metadata. This metadata provides a blueprint for how data is organized and accessed within the database.
Tamoban Javnoi COMPUTER SCIENCE & IT   -   Database Management Systems

When is a database said to be in the Third Normal Form (3NF)?

A database is in the Third Normal Form (3NF) if it is in the Second Normal Form (2NF) and all its attributes are functionally dependent only on the primary key, meaning there are no transitive dependencies. This helps to further reduce data redundancy and maintain data integrity.
Tamoban Javnoi COMPUTER SCIENCE & IT   -   Database Management Systems

What is the primary purpose of normalization in database design?

The primary purpose of normalization is to reduce data redundancy and eliminate undesirable characteristics like insertion, update, and deletion anomalies. By organizing data into tables and defining relationships between them, normalization ensures that each piece of data is stored only once.
Tamoban Javnoi COMPUTER SCIENCE & IT   -   Web Design & Development

Can you explain which HTTP method is idempotent and should be used for updating a resource in RESTful web services?

The PUT method is idempotent, meaning that multiple identical requests will have the same effect as a single request. It is typically used for updating a resource in RESTful web services, as it replaces the current representation of the target resource with the new data provided in the request.
Tamoban Javnoi COMPUTER SCIENCE & IT   -   Web Design & Development

How to prevent a form from submitting when a required field is empty using HTML5?

In HTML5, adding the 'required' attribute to input fields ensures that the form cannot be submitted if those fields are left empty. The browser will automatically prompt the user to fill in the required fields before allowing submission.

COMPUTER SCIENCE & IT