Answer:
The answer to this question as follows:
1) False
2) False
3) True
Explanation:
The description of the above option as follows
- In option 1, A single character variable must be contained in one quote mark, but it is based on the alphabet, which is a specific device, and the price of a continued character varies from one device to another, that's why it is false.
- In option 2, This option is wrong because in assembly language the identifier value must not exceed the length than 247 characters.
- In option 3, It is correct because in the variable declaration the first char should be a letter, _, @ or $letter. A total of 1-247 characters. The default case is insensitive.
Answer:
1. Data Cleaning
2. Data Integration
3. Data Selection
4. Data transformation
5. Data Mining
6. Pattern Evaluation
7. Knowledge presentation
Explanation:
The steps involved in data mining or data analytics when viewed as a process of knowledge discovery includes the following:
Step 1. Data cleaning: this involves the elimination of inconsistent data.
Step 2. Data integration: this involves the combination of data from multiple sources.
Step 3. Data selection: this is the step where significant data for task examination are gathered from the database.
Step 4. Data transformation: this the step in which the data are modified for mining by conducting the aggregate operation.
Step 5. Data mining: this step involves the extraction of data patterns through specific techniques.
Step 6. Pattern evaluation: this step involves the identification of patterns that depict knowledge based on measures.
Step 7. Knowledge presentation: this is the step in which visualization and knowledge representation methods are utilized to illustrate mined knowledge to users.
Answer:
Network switch has been disconnected or switched off
Explanation:
An organization networking can be done by using several switches, routers, modems, etc. A network switch works between modem and systems, connecting the systems to the network.
A network switch is a multi-port switch that connects multiple devices to the network. mostly every floor has a network switch connected with the floor systems.
When a system is connected to switch, its indicator light on NIC is active. but as per the scenario, no system has active indicator lights on NIC, which means that there is some problem with the switch or switch is powered off.
Answer:
Option d) is correct
Explanation:
To optimize the processing of a warehouse’s operations, products are stored on warehouse racks when they arrive. The items that arrive last are the first to go out to minimize the time it takes to retrieve an item. The items that arrive need to be represented and the warehouse should be left in a data structure. The data structure which should you use to represent this situation is a queue.
Option d) is correct
