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3 years ago

10

Which firewall configuration is best for screening encrypted packets? a. Firewall in front of the crypto host b. Firewall after

the crypto host c. Firewall before and after the crypto host d. There is no good approach

Computers and Technology

1 answer:

Sindrei [870]3 years ago

4 0

Answer:

C(firewall before and after crypto host)

Explanation:

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Create a recursive method, a method that calls itself, that returns the number of vowels that appear in any string given. Keep i

kvv77 [185]

<h2>Answer:</h2>

//Define the method as noOfVowels

//Let it receive the string to be checked as argument

public static int noOfVowels(String string){

//Check the length of the string

//If it is less than 1, then it is an empty string

//Hence return 0

if(string.length() < 1){

return 0;

}

//Else,

else{

//get the character at the first position in the string

//and convert it to a lower case

char x = string.toLowerCase().charAt(0);

//Check if the character is a vowel

if (x == 'a' || x == 'e' || x == 'i' || x == 'o' || x == 'u'){

//if it is a vowel, add 1 to a recall of the method.

//But this time, call the method with

//the string excluding the first character.

//i.e the substring of the string starting at index 1 rather than 0

return 1 + noOfVowels(string.substring(1));

}

else {

//If it is not a vowel, just recall the method with

//the string excluding the first character

//i.e the substring of the string starting at index 1 rather than 0

return noOfVowels(string.substring(1));

}

}

}

<h2>Explanation:</h2><h2></h2>

The code has been written in Java and it contains comments explaining every part of the code. Please go through the comments carefully.

The actual lines of code have been written in bold face to distinguish them from comments.

The code is re-written without comments as follows;

public static int noOfVowels(String string){

if(string.length() < 1){

return 0;

}

else{

char x = string.toLowerCase().charAt(0);

if (x == 'a' || x == 'e' || x == 'i' || x == 'o' || x == 'u'){

return 1 + noOfVowels(string.substring(1));

}

else{

return noOfVowels(string.substring(1));

}

}

}

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3 years ago

Why are there so many unit testing tools? Are they efficient? Why or why not?

sineoko [7]

Answer:

Unit testing is the software testing method in which the individual source code are associate to control data. Unit testing basically test the code to ensure that the data or information meets its design.

The aim of unit testing that each part isolate in the program and display the correct individual parts.

Unit testing tool are efficient as they provide several benefits in the development cycle. The basic efficiency of unit testing tools depend upon its type of testing. Unit testing basically validate the units of source code in the program.

For example: when the loop and function in the program work efficiently.

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3 years ago

Ld' is the instruction with the longest latency on the CPU from Section 4.4 (in RISC-V text). If we modified ld and sd so that t

antiseptic1488 [7]

Answer:

See explaination

Explanation:

a)

The primary factors that influence the program's speed on a new CPU are given as:-

CPU Clock speed where the speed of the process instructions is being measured.

Multi-core which is when the transistors work faster than respective CPU.

Cache which helps to note that the transition of data is smooth and fast.

b)

So, there are two CPUs suppose the old one as 'A' and the modified one as 'B'.

'A' has following features---

It takes more time to execute program as it has more clock cycle time or we can say it has low clocking rate or low speed in terms of MHz or GHz. Clock rate is the inverse of Clock Cycle Time. When you will increase the clocking rate of CPU, it will get faster and then Clock Cycle Time will get reduced.

It has less instructions provided.

'B' has following features----

It takes less time to execute program as it has less clock cycle time or we can say it has high clocking rate or high speed in terms of MHz or GHz.

It has more instructions provided.

The performance of CPU depends upon 2 factors:

The number and types of instructions that are executed by the CPU

How fast the CPU can execute those instructions?

So, overall CPU B is better as it has less execution time than CPU A but the performance will always depend upon the number and type of instructions executed by the CPU so it may vary.

Please refer to attachment for instructions and formulas.

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3 years ago

What single awk command can be used to display all the login names and their associated numerical user IDs

Luden [163]

Answer:

Used the command syntax; awk -F":" '{ print "username: " $<number location> "\t\tuid:" $<number location> }' <target folder>

Explanation:

Linux operating system is a fast open-source computer platform for programmers and network administrators. Its system is arranged in a hierarchical tree structure with the root represented as "/" (for absolute path).

The passwd is a folder in the Linux OS that holds the login details of all users in the system network. The 'awk' is one of the commands used to get information from a file in a folder. It prints out the result by specifying the location of the values (like the username and user id) as a variable (with prefix '$') and then the target folder.

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3 years ago

Describe the Order of Operations in Java programming.

cestrela7 [59]

Answer:

It stands for Parentheses, Exponents, Multiplication/Division, Addition/Subtraction. PEMDAS is often expanded to the mnemonic "Please Excuse My Dear Aunt Sally" in schools. Canada and New Zealand use BEDMAS, standing for Brackets, Exponents, Division/Multiplication, Addition/Subtraction.

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3 years ago