Answer:
FALSE
Explanation:
Because C1 and C2 implement the same interface, they both implement whichIsIt. The variable c is known as a polymorphic variable, meaning that it can change from being an C1 to a C2. So, the message c.whichIsIt( ); may invoke C1's whichIsIt or C2's whichIsIt. This can only be known at runtime.
Answer:
r = 1
Explanation:
Average processing time ( p ) = 3 minutes
Average inter-arrival time ( a ) = 3 minutes
number of servers ( m ) = 3
<u>Determine the value of r </u>
r ( offered load ) = p/a
= 3 / 3 = 1
∴ value of r ( offered load ) = 1
Answer:
B. Create a unique External ID field on Accounts in SFDC for matching.
Explanation:
- External ID is used to prevent duplicate records from being created as a consequence of the import operation, when importing custom objects or person accounts.
- An external ID is a specific field that contains the External ID attribute.
- External ID has unique record identifiers from a system that is outside the Salesforce.
- When this option is selected Data Import Wizard identifies existing Salesforce records with external IDs that match the values in import file.
- The External ID field enables to keep unique record IDs from an external system, usually for integration.
- External ID field values should be unique and determine whether or not value are case sensitive can also be determined. For example XYZ and xyz will not be considered same if case sensitive option is not selected.
Answer:
Tactical Level
Explanation:
Based on the information provided within the question it can be said that the level of the organization that is being mentioned is called the Tactical Level. In this level managers focus choosing the tactics depending on the information that they gather from everyday operational activities. This information is later sent to the higher levels of the organization.
Making the file read-only will not allow the file to be rewritten again. For this, we need to modify the permissions of the file. To achieve this, we will make use of the os module in Python more specifically, the chmod() of the os module.
The coding part is extremely simple and will contain very few lines as we are not doing much but changing the permissions. Using the chmod(), we can change the mode of the path, setting it to any mode using the suitable flags from the stat module. Both these modules come inbuilt with Python and hence you need not install anything additionally.
The entire code to change the file to read-only is as follows;
import os
from stat import S_IREAD
# Replace the first parameter with your file name
os.chmod("sample.txt", S_IREAD)
.
You can verify if the code was executed correctly by checking the file’s permissions. To do that :
Right-click on the file and click properties.
Under the attributes section, you will find the read-only checkbox checked.
I hope you found this article useful and it helped you make a file read-only. You can do more than just making the file read-only by using the appropriate flag from the stat module.
