Answer:
In computer memory, zero(0) represents the absence of an electric signal and 1 represents the presence of an electric signal.
Explanation:
Computer memory is used to store data in the form of electrical signals. Electrical signal is used to represent the presence or absence of signal. The data is stored in binary form.
Hence,
In computer memory, zero(0) represents the absence of an electric signal and 1 represents the presence of an electric signal.
Answer:
False
Explanation:
An abstract class is a class declared abstract — it may or may not include abstract techniques. It is not possible to instantiate abstract classes, but they can be sub-classed.
<u></u>
<u>Abstract method declaration</u>
abstract void moveTo(double X, double Y);
Usually the subclass offers solutions for all of the abstract techniques in its parent class when an abstract class is sub-classed. If not, however, the subclass must be declared abstract as well.
<u>Example</u>
public abstract class GraphicObject {
// declaring fields
// declaring non-abstract methods
abstract void draw();
}
Answer:
Correct limitation for Attribute Name and value is option
b: Value and name combined must not exceed 400KB
Explanation:
For amazon dynamo db You can have unlimited attribute per item but one attribute cannot exceed 400 kb in size.400Kb is the limit of an item which can be stored in db.
If bigger data is required to store than data is stored some where and links/url to data are stored in the db.
For Item max size is 64KB