Answer:
Grace Hopper.
Explanation:
Grace Hopper was a US Naval Rear Admiral and an American computer scientist who was born on the 9th of December, 1906 in New York city, United States of America. She worked on the first commercial computer known as universal automatic computer (UNIVAC), after the second World War II.
In 1953 at the Remington Rand, Grace Hopper invented the first high-level programming language for UNIVAC 1 by using words and expressions.
Additionally, the high-level programming language known as FLOW-MATIC that she invented in 1953 paved the way for the development of common business-oriented language (COBOL).
Hence, Grace Hopper developed the first compiler and conducted work that led to the development of COBOL.
Implement the method countInitial which accepts as parameters an ArrayList of Strings and a letter, stored in a String. (Precondition: the String letter has only one character. You do not need to check for this.) The method should return the number of Strings in the input ArrayList that start with the given letter. Your implementation should ignore the case of the Strings in the ArrayList. Hint - the algorithm to implement this method is just a modified version of the linear search algorithm. Use the runner class to test your method but do not add a main method to your U7_L4_Activity_One.java file or your code will not be scored correctly.
Answer:
Answered below
Explanation:
//Program is implemented in Java
public int countInitials(ArrayList<string> words, char letter){
int count = 0;
int i;
for(i = 0; i < words.length; i++){
if ( words[i][0]) == letter){
count++
}
}
return count;
}
//Test class
Class Test{
public static void main (String args[]){
ArrayList<string> words = new ArrayList<string>()
words.add("boy");
words.add("bell");
words.add("cat");
char letter = 'y';
int numWords = countInitials ( words, letter);
System.out.print(numWords);
}
}
During TCP/IP communications between two network hosts, information is encapsulated on the sending host and decapsulated on the receiving host using the OSI model. Match the information format with the appropriate layer of the OSI model.
a. Packets
b. Segments
c. Bits
d. Frames
1. Session Layer
2. Transport Layer
3. Network Layer
4. Data Link Layer
5. Physical Layer
Answer:
a. Packets - Network layer
b. Segments - Transport layer
c. Bits - Physical layer
d. Frames - Data link layer
Explanation:
When TCP/IP protocols are used for communication between two network hosts, there is a process of coding and decoding also called encapsulation and decapsulation.
This ensures the information is not accessible by other parties except the two hosts involved.
Operating Systems Interconnected model (OSI) is used to standardise communication in a computing system.
There are 7 layers used in the OSI model:
1. Session Layer
2. Transport Layer
3. Network Layer
4. Data Link Layer
5. Physical Layer
6. Presentation layer
7. Application layer
The information formats given are matched as
a. Packets - Network layer
b. Segments - Transport layer
c. Bits - Physical layer
d. Frames - Data link layer
Sophisticated modeling software is helping international researchers
Answer:
A. increase the pace of research in finding and producing vaccines.
Explanation:
These are the options for the question;
A. increase the pace of research in finding and producing vaccines.
B. analyze computer systems to gather potential legal evidence.
C. market new types of products to a wider audience.
D. create more intricate screenplays and movie scripts.
Modeling software can be regarded as computer program developed in order to build simulations as well as other models. modelling software is device by international researchers to make research about different vaccines and other drugs and stimulants to combat different diseases. It helps the researcher to devoid of details that are not necessary and to deal with any complexity so that solution can be developed. It should be noted that Sophisticated modeling software is helping international researchers to increase the pace of research in finding and producing vaccines.
Where does the revolver get the IP address of a site not visited before?
the file server
the print spooler
the IP provider
the name server
Answer:
The name server
Explanation:
The correct answer is name servers because on the internet, they usually help web browsers and other services to access the records of the domain name system(DNS) by direction of traffic through connection of the domain name with the IP address of the web server.
describe a sub routine
Explanation:
A routine or subroutine, also referred to as a function procedure and sub program is code called and executed anywhere in a program. FOr example a routine may be used to save a file or display the time.
A structure that organizes data in a list that is commonly 1-dimensional or 2-
dimensional
Linear Section
Constant
No answertet provided
It intro technology
Answer:
An array.
Explanation:
An array can be defined as a structure that organizes data in a list that is commonly 1-dimensional or 2-dimensional.
Simply stated, an array refers to a set of memory locations (data structure) that comprises of a group of elements with each memory location sharing the same name. Therefore, the elements contained in array are all of the same data type e.g strings or integers.
Basically, in computer programming, arrays are typically used by software developers to organize data, in order to search or sort them.
Binary search is an efficient algorithm used to find an item from a sorted list of items by using the run-time complexity of Ο(log n), where n is total number of elements. Binary search applies the principles of divide and conquer.
In order to do a binary search on an array, the array must first be sorted in an ascending order.
Hence, array elements are mainly stored in contiguous memory locations on computer.
Help need right now pls
Read the following Python code:
yards - 26
hexadecimalYards = hex (yards)
print (hexadecimalYards)
Which of the following is the correct output? (5 points)
A. 0b1a
B. 0d1a
C. 0h1a
D. 0x1a
Answer:
d. 0x1a
Explanation:
You are considering upgrading memory on a laptop. What are three attributes of currently installed memory that HWiNFO can give to help you with this decision?
Answer:
Some of the qualities of the installed memory which HWiNFO can reveal are:
Date of manufactureMemory type Speed of memoryExplanation:
HWiNFO is an open-source systems information app/tool which Windows users can utilize as they best wish. It helps to detect information about the make-up of computers especially hardware.
If you used HWiNFO to diagnose the memory, the following information will be called up:
the total size of the memory and its current performance settingsthe size of each module, its manufacturer, and model Date of manufactureMemory type Speed of memorysupported burst lengths and module timings, write recovery time etc.Cheers
Write a java program named BMI.java(i)print out your name and your pantherID(ii) Ask user to type in his/her weight and height; if an illegal input (such as a letter) is typed by the user, give the user one more chance to input correctly.(iii)Create a method to compute the body mass index (BMI) accordingly. BMI
Answer:
Answered below
Explanation:
//Print name and ID
Scanner x = new Scanner(System.in);
System.out.print("Enter name");
String name = x.nextline();
Scanner y = new Scanner(System.in);
System.out.print("Enter ID");
int id = y.nextline();
System.out.println(name, id);
Scanner w = new Scanner(System.in);
System.out.print("enter weight");
double weight = w.nextline();
Scanner h = new Scanner(System.in);
System.out.print("enter height: ");
double height = h.nextline();
int i = 0;
while( I < 2){
if ( !isDigit(weight) && !isDigit(height){
Scanner w = new Scanner(System.in);
System.out.print("enter weight:);
weight = w.nextline();
Scanner h = new Scanner(System.in);
System.out.print("enter height");
height = h.nextline();
}else{
break;
double BMI = weight / ( height **2)
System.out.print(BMI)}
I++
}
5. All sites are required to have the following reference materials available for use at VITA/TCE sites in paper or electronic format: Publication 17, Publication 4012, Volunteer Tax Alerts (VTA), and Quality Site Requirement Alerts (QSRA). AARP Foundation Tax Aide uses CyberTax Alerts in lieu of VTAs and QSRAs. What other publication must be available at each site and contains information about the new security requirements at sites
Answer:
Publication 5140.
Explanation:
The acronym VITA stands for Volunteer Income Tax Assistance and TCE stands for Tax Counseling for the Elderly. VITA/TCE is a certification gotten from the Internal Revenue Service in which the holders of such certification are trained on how to help people that have disabilities or that their incomes earners that are low. These volunteers help these set of people to prepare for their tax return.
In order to make the volunteers to be able to perform their work with high accuracy, the Department of Treasury, Internal Revenue Service gave out some aids for Quality Site. One of the aids which is the one contains information about the new security requirements at sites is given in the Publication 5140.
Given that the variable named Boy = "Joey" and the variable named Age = 6, create statements that will output the following message:
Congratulations, Joey! Today you are 6 years old.
First, write one statement that will use a variable named Message to store the message. (You will need to concatenate all of the strings and variables together into the one variable named Message. If you don't know what that means, read the section in Chapter 1 about concatenation.)
Then write a second statement that will simply output the Message variable.
Answer:
isn't it already showing it if not put text box
Explanation:
let m be a positive integer with n bit binary representation an-1 an-2 ... a1a0 with an-1=1 what are the smallest and largest values that m could have
Answer:
Explanation:
From the given information:
[tex]a_{n-1} , a_{n-2}...a_o[/tex] in binary is:
[tex]a_{n-1}\times 2^{n-1} + a_{n-2}}\times 2^{n-2}+ ...+a_o[/tex]
So, the largest number posses all [tex]a_{n-1} , a_{n-2}...a_o[/tex] nonzero, however, the smallest number has [tex]a_{n-2} , a_{n-3}...a_o[/tex] all zero.
∴
The largest = 11111. . .1 in n times and the smallest = 1000. . .0 in n -1 times
i.e.
[tex](11111111...1)_2 = ( 1 \times 2^{n-1} + 1\times 2^{n-2} + ... + 1 )_{10}[/tex]
[tex]= \dfrac{1(2^n-1)}{2-1}[/tex]
[tex]\mathbf{=2^n -1}[/tex]
[tex](1000...0)_2 = (1 \times 2^{n-1} + 0 \times 2^{n-2} + 0 \times 2^{n-3} + ... + 0)_{10}[/tex]
[tex]\mathbf {= 2 ^{n-1}}[/tex]
Hence, the smallest value is [tex]\mathbf{2^{n-1}}[/tex] and the largest value is [tex]\mathbf{2^{n}-1}[/tex]
Approximately how many numeric IP addresses are possible with IPv4?
4 billon
Answer:
4,294,967,296 (~4.3B)
Explanation:
IPv4 uses 32-bits for representing addresses, thus you can have 2^32 total combinations.
