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HACTEHA [7]
2 years ago
8

Consider a DASH system for which there are N video versions (at N different rates and qualities) and N audio versions (at N diff

erent rates and qualities). Suppose we want to allow the player to choose at any time any of the N video versions and any of the N audio versions. a. If we create files so that the audio is mixed in with the video, so server sends only one media stream at given time, how many files will the server need to store (each a different URL)? b. If the server instead sends the audio and video streams separately and has the client synchronize the streams, how many files will the server need to store?
Computers and Technology
1 answer:
Ksju [112]2 years ago
5 0

Answer: a) N² files. b) 2N files.

Explanation:

If an user can choose freely both the video and the audio quality, if they are stored separately, but the user can download any mix of them as a single file, the server must store one audio version for each video version, so it will need to store NxN = N² files.

If, instead, the server can send the audio and video streams separately, so the user can choose one of the N videos available, and one of the N audio versions, the server will need to store only N video files + N audio audio files, i.e. , 2 N files.

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What is printed by the following program provided all necessary standard header files are included? Explain each line of the out
Ostrovityanka [42]

<u>Output:</u>

f1 in A

f2 in A

f1 in B

f2 in A

f1 in A

f2 in A

f1 in B

f2 in B  

<u>Explanation:</u>

In this snippet, the code makes use of virtual functions. A virtual function is defined as a function that is defined in the base class and redefined in the derived class. If the derived function accesses the virtual function, the program will get executed with the derived class’s version of the function.

In this code, we define the virtual function f1() in class A and also redefine it in class B which is the derived class of A. While executing the program, the function g which takes the object b (class B’s object) as a parameter. It will print class B’s version of f1() rather than class A’s version. This is working off the virtual function.

8 0
2 years ago
Write a class for a Cat that is a subclass of Pet. In addition to a name and owner, a cat will have a breed and will say "meow"
fenix001 [56]

Answer:

The Java class is given below with appropriate tags for better understanding

Explanation:

public class Cat extends Pet{

  private String breed;

 public Cat(String name, String owner, String breed){

      /* implementation not shown */

      super(name, owner);

      this.breed = breed;

  }

  public String getBreed() {

      return breed;

  }

  public void setBreed(String breed) {

      this.breed = breed;

  }

  public String speak(){ /* implementation not shown */  

      return "Purring…";

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}

8 0
2 years ago
Allows you to manually add an entry to the arp cache that resolves the ip address inetaddr to the physical address etheraddr. wh
Norma-Jean [14]
The answer in this question is that once the Adaptor or router received the destination IP address (even if we entered in the incorrect MAC address) the router or adapter would remove the IP address from the Ethernet frame and using ARP, would get the correct MAC address of the destination.
6 0
2 years ago
Question _.1 with 1 blankMiguel y Maru están muy cansados. Question 2 with 1 blankFelipe es muy joven. Question 3 with 1 blankJi
Alekssandra [29.7K]

Answer:

Miguel y Maru están muy cansados.  - Miguel y Maru están cansadísimos

Felipe es muy joven. - Felipe es jovencísimo

Jimena es muy inteligente. - Jimena es inteligentísima

La madre de Marissa está muy contenta. - La madre de Marissa está contentísima

Estoy muy aburrido. - Estoy aburridísimo

Explanation:

In this activity we have to switch the statements to the absolute superlative of the expressions. In Spanish we can add the suffix -ísimo to an adjective to refer to the highest degree of something. It can be translated in ENglish to "really, extremely, super or quie". The statements in English are:

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- Felipe is very young - Felipe is super young

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8 0
2 years ago
A file named data.txt contains an unknown number of lines, each consisting of a single integer. Write some code that creates two
Damm [24]

Answer:

I am doing it with python.

Explanation:

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myfile = open('data.txt', 'w')

myfile.write(nums)

myfile.close()

myfile = open('data.txt', 'r')

num1 = (myfile.read())

num1 = num1.split()

print(num1)

print(type(num1))

for x in num1:

   x = int(x)

   if x < 0:

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       minus.write(str(x) + ' ')

       minus.close()

   elif x>= 0:

       plus = open('dataplus.txt', 'a')

       plus.write(str(x)+' ')

       plus.close()

3 0
2 years ago
Read 2 more answers
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