Answer:
TRUE
Explanation:
Intrusion Detection System (IDS) monitors policy violations or malicious activities in a system or network. It could be a device or a software application.
IDS differs according to the size of the network. There are two main classifications: Host-based Intrusion Detection System (HIDS) and Network Intrusion Detection System (NIDS). HIDS observes important Operating System (OS) files. While the NIDS analyses network traffic, they are placed at a unique point or several unique points to monitor outgoing and incoming traffic within the network.
Hence it tries to identify unique sequences appearing across several packets in a traffic stream than in individual packets.
Answer:
programming algorithm as a recipe that describes the exact steps needed for the computer to solve a problem or reach a goal. In many cases, there are multiple ways to perform a specific operation within a software program. Therefore, programmers usually seek to create the most efficient algorithms possible. By using highly efficient algorithms, developers can ensure their programs run as fast as possible and use minimal system resources. Of course, not all algorithms are created perfectly the first time. Therefore, developers often improve existing algorithms and include them in future software updates. When you see a new version of a software program that has been "optimized" or has "faster performance," it most means the new version includes more efficient algorithms.
Explanation:
Answer:
SELECT product_name, SUM(DISTINCT quantity) AS total_quantity
RANK() OVER (PARTITION BY total_quantity ORDER BY product_name) AS rank,
DENSE_RANK () OVER (ORDER BY quantity DESC) AS dense_rank
FROM Order_items
JOIN products ON Order_items.product_id = products.product_id
GROUP BY product_id
Explanation:
The SQL query returns four columns namely, product name, total quantity, rank and dense rank. The query uses the rank and the dense rank function to return the rows according to numeric ranks.
Its the second one. Hope this helps. :)
Answer:
If we delete record number 15 in a primary table, but there's still a related table with the value of 15, we end up with an orphaned record. Here, the related table contains a foreign key value that doesn't exist in the primary key field of the primary table. This has resulted in an “orphaned record”.
