Срочно дам 25 очков надо написать на с++!!!!

Consider the classes below, declared in the same file: class A { int a; public A() { a = 7; } } class B extends A { int b; pub

DiKsa [7]

Answer:

2. A reference of type A can be treated as a reference of type B - False

Base class or its objects are not related to their derived class (or its objects).

Explanation:

class A {

int a;

public A() {

a = 7;

}

class B extends A {

int b;

public B() {

b = 8;

}

///////////////////////////////////////////////////////////////////////////////////////////////////////

1. After the constructor for class B executes, the variable a will have the value 7 - True.

When an object of a derived class is declared, the constructor of base class is called before the constructor of derived class (is called).

3. Both variables a and b are instance variables - True.

Classes can have instance, or member, variables and methods.

4. After the constructor for class B executes, the variable b will have the value 8 - True.

When object of class B is declared, its constructor was called, which initialized variable b to 8.

4 0

3 years ago

* Describe the five components of a computer

LenaWriter [7]

Answer:

Computer systems consist of three components as shown in below image: Central Processing Unit, Input devices and Output devices. Input devices provide data input to processor, which processes data and generates useful information that's displayed to the user through output devices. This is stored in computer's memory.

5 0

2 years ago

Read 2 more answers

Write an if statement to test if a number stored in y is between 6 and 10 inclusive.

lana66690 [7]

y = choose whatever number you want.

if 5 < y < 11:

print("The value stored in y is between 6 and 10 inclusive")

else:

print("The value stored in y is not between 6 and 10 inclusive.")

I hope this helps!

8 0

2 years ago

HEEEEELPPP!!!BRAINLIEST!!! THIS IS URGENT!!!

Fittoniya [83]

Answer:

Begin the statement with the proper keyword to start the loop

Explanation:

Given

The code segment

Required

Fix the code

The first line of the code segment is meant to be a for loop, but it does follow the right syntax.

This is so because the for keyword is missing.

The first line should be corrected and replaced with:

for count in range(80):

Hence, option (b) is correct

4 0

3 years ago

In the following four questions, we are sending a 30 Mbit MP3 file from a source host to a destination host. All links in the pa

pantera1 [17]

Answer:

1)we are sending a 30 Mbit MP3 file from a source host to a destination host. All links in the path between source and destination have a transmission rate of 10 Mbps. Assume that the propagation speed is 2 * 108 meters/sec, and the distance between source and destination is 10,000 km. Initially suppose there is only one link between source and destination. Also suppose that the entire MP3 file is sent as one packet. The TRANSMISSION DELAY is:

3 Seconds

2)

we are sending a 30 Mbit MP3 file from a source host to a destination host. All links in the path between source and destination have a transmission rate of 10 Mbps. Assume that the propagation speed is 2 * 108 meters/sec, and the distance between source and destination is 10,000 km. The END TO END DELAY(transmission delay plus propagation delay) is

3.05 seconds

3)

we are sending a 30 Mbit MP3 file from a source host to a destination host. All links in the path between source and destination have a transmission rate of 10 Mbps. Assume that the propagation speed is 2 * 108 meters/sec, and the distance between source and destination is 10,000 km. how many bits will the source have transmitted when the first bit arrives at the destination.

500,000 bits

4)

we are sending a 30 Mbit MP3 file from a source host to a destination host. All links in the path between source and destination have a transmission rate of 10 Mbps. Assume that the propagation speed is 2 * 108 meters/sec, and the distance between source and destination is 10,000 km. Now suppose there are two links between source and destination, with one router connecting the two links. Each link is 5,000 km long. Again suppose the MP3 file is sent as one packet. Suppose there is no congestion, so that the packet is transmitted onto the second link as soon as the router receives the entire packet. The end-to-end delay is

6.1 seconds

5)

we are sending a 30 Mbit MP3 file from a source host to a destination host. All links in the path between source and destination have a transmission rate of 10 Mbps. Assume that the propagation speed is 2 * 108 meters/sec, and the distance between source and destination is 10,000 km. Now suppose that the MP3 file is broken into 3 packets, each of 10 Mbits. Ignore headers that may be added to these packets. Also ignore router processing delays. Assuming store and forward packet switching at the router, the total delay is

4.05 seconds

6)

we are sending a 30 Mbit MP3 file from a source host to a destination host. All links in the path between source and destination have a transmission rate of 10 Mbps. Assume that the propagation speed is 2 * 108 meters/sec, and the distance between source and destination is 10,000 km. Now suppose there is only one link between source and destination, and there are 10 TDM channels in the link. The MP3 file is sent over one of the channels. The end-to-end delay is

30.05 seconds

7)

we are sending a 30 Mbit MP3 file from a source host to a destination host. All links in the path between source and destination have a transmission rate of 10 Mbps. Assume that the propagation speed is 2 * 108 meters/sec, and the distance between source and destination is 10,000 km. Now suppose there is only one link between source and destination, and there are 10 FDM channels in the link. The MP3 file is sent over one of the channels. The end-to-end delay is

30.05 seconds

6 0

3 years ago