Two strategies for keeping your files in sync

What will be displayed in the console when this program runs?

Novay_Z [31]

Answer:

20 will be displayed on the console.

Explanation:

Given code is:

var numList = [10,20,30];

console.log(numList[numlist.length-2]);

The first line of code declares an array named numList and assigns it values given in the square brackets.

The second line of code is written to display the element on the index obtained by [numlist.length-2]

[numlist.length-2] means the second index.

Hence,

after running the code on JavaScript editor and dry running the code

20 will be displayed on the console.

7 0

2 years ago

Read 2 more answers

In a switch statement, if a break statement is missing, _______________. Select one: a. the default case is automatically execut

Aleks [24]

Answer:

c. execution falls through the next branch until a break statement is reached

Explanation:

In a switch statement, if break is missing, then program continues to the next cases until it finds a break statement.

Consider the following example!

Example:

#include <iostream>

using namespace std;

int main()

{

int choice = 1;

switch (choice)

{

case 1:

printf("This is case 1, No break\n");

case 2:

printf("This is case 2, No break\n");

case 3:

printf("This is case 3, with break\n");

break;

default: printf("Error! wrong choice\n");

}

return 0;

}

Output:

This is case 1, No break

This is case 2, No break

This is case 3, with break

We have 3 cases here and case 1 and 2 don't have break statements, only case 3 has a break statement.

We called the case 1, then program continued to case 2, and finally to case 3 where it finds the break statement and terminates.

Therefore, we conclude that in a switch statement, if a break statement is missing, then execution falls through the next branch until a break statement is found.

8 0

3 years ago

Everybody at a company is assigned a unique 9 digit ID. How many unique IDs exist?

Brut [27]

If you include all zeroes, then it should be 1,000,000,000. Otherwise it’s 999,999,999.

Think of how between 0-9 theres 10 numbers, and use that logic towards 000000000-999999999

3 0

3 years ago

In the output at the command line from a router that reads - ip ospf message-digest-key 1 md5 CISCO-123 - what does the CISCO-12

11111nata11111 [884]

Answer: a) it is used as a password.

Explanation:

In order to be able to exchange routing information , CISCO routers use an authentication process, so when they send a message (a HELLO message for instance) the router that receives the message confirms that the message is authentic.

There are several types of authentication in OSPF, null, plain and MD5.

The difference between them is as follows:

1) null, implies that no password is included in the packet header, it's the default mode.

2) plain: In this type of authentication, the password is sent transparently from a router to his neighbor, as a plain text which makes it vulnerable to attacks from packet inspection software, like Sniffer.

3) MD5, is a more secure mode, in which the password is not sent directly, but a hash built based on the packet contents and the password itself instead.

MD5 (Message Digest 5) is the name of the algoritm used to build the hash that receiver will compare with the sent by the sender in order to confirm authentication.

The chosen password, is placed at the end of the command, after the type of authentication (MD5 in this case), which in this case is "CISCO-123".

7 0

3 years ago

In the context of the data administration component of a database management system (DBMS), the acronym CRUD stands for _____. G

sdas [7]

Answer:

C.R.U.D stands for Create, Read, Update, Delete.

Explanation:

6 0

2 years ago