Answer: All of these.
Explanation: Lets take a two-dimensional array alphabet[4][4]
Lets say this array contains the following elements: Example 1
a b c d
l i o n
f e l l
s t e m
These are the strings with same length. So this 2D array can contain strings of same length.
Now lets take another 2D array Example 2
a b c
h i n t
s o
e g g
2D array can have all these above mentioned elements. So it can contain strings of different lengths.
Now consider the Example 2. Some places for the elements are left. This isn't an issue for 2D array. So it can contain uninitialized elements too.
So the answer is All of above.
Answer:
b. data entry slows as every INSERT , UPDATE, or DELETE statement must also update every index.
Explanation:
This process help to improve the speed of get data , it takes each element in the indexed column and save the location to get faster the data. But if you index every attribute in a table it going to take a lot of time locating each column in the respective index in each query(update, delete and insert). For that reason is necesary be carefull with this process and only put index in the relevant columns
Answer:
E. Traditional leaders in communication have lost some control over information
Explanation:
Due to the quick development of new technologies like Internet, cable etc, traditional leaders in communication have lost some of their control over information. This means that the technological advancement is disruptive for traditional leaders. Following examples are given to elaborate the consequences of advancement in new technology in digital era.
With the establishment of new channels like CNN, Fox News and internet bloggers, the old television network news shows like ABC, NBC lost their audiences.
Email technology has taken on some of the postal service's responsibilities and outperforms attempts to control communication outside national borders. This replaced the postal mail which used to take months to reach the destination.
The Internet and social media websites are transforming the way in which we access and interact with media culture. Before internet most people would watch popular TV shows in at the time they originally aired it. This scheduling gave common media interactions at specific times within our society. We still watch these TV shows but now we watch them at our own ease through websites. Using You tube we can upload our own media instead of viewing mainstream television.
Answer:
A downloaded executable file may contain harmful software know as malware.
Further details:
Malwares:
Malware (a portmanteau for pernicious programming) is any product purposefully intended to make harm a PC, server, customer, or PC network. Malware does the harm after it is embedded or brought somehow or another into an objective's PC and can appear as legitimately executable code, contents, supposed "dynamic substance" (Microsoft Windows), and different types of data. Some sorts of malware are to a great extent alluded to in the media as PC infections, worms, Trojan steeds, ransomware, spyware, adware, and scareware, among different terms. Malware has a malignant expectation, acting against the enthusiasm of the PC client—thus does exclude programming that causes accidental damage because of some lack, which is regularly portrayed as a product bug.
Uses:
Malware is once in a while utilized comprehensively against government or corporate sites to assemble monitored information, or to upset their activity as a rule. However, malware can be utilized against people to pick up data, for example, individual recognizable proof numbers or subtleties, bank or charge card numbers, and passwords.
Answer details:
Subject: Computer and technology
Level: College
Keywords:
• Harmful software
• Malware
• Malware software
• Uses of malware
• Purpose of malware
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