Answer:
Sheave wheel and hoist cable
Explanation:
The sheave wheel is a pulley wheel that sits above the mine shaft. The hoist cable passes over the sheave wheel and then down the shaft of the mine. The sheave wheel reduces the sliding friction of the mine cable. The head frame is the structure that supports the sheave wheel.
Matt Pyke and Karsten Schmidt wrote a programming code that created the video which they used for the advertisement for Audi. Thus, Option D is the correct statement.
<h3>What is a
programming code?</h3>
Programming code refers back to the set of instructions, or a system of rules, written in a specific programming language (i.e., the source code).
It is likewise the term used for the source code after it's been processed with the aid of using a compiler and made ready to run on the computer (i.e., the object code).
Therefore, Matt Pyke and Karsten Schmidt wrote a programming code that created the video which they used for the advertisement for Audi. Option D is the correct statement.
Learn more about programming code:
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Answer:
The answers are: it is used to enable fast DNS queries and It can help reduce the amount of network traffic generated by DNS servers.
Explanation:
Because a DNS server can resolve a query from tis local data sends a recursive qyery to a root server.
Answer:
Explanation:
Following are the Semaphores:
Customers: Counts waiting customers;
Barbers: Number of idle barbers (0 or 1)
mutex: Used for mutual exclusion.
Cutting: Ensures that the barber won’t cut another customer’s hair before the previous customer leaves
Shared data variable:
count_cust: Counts waiting customers. ------------copy of customers. As value of semaphores can’t access directly.
// shared data
semaphore customers = 0; semaphore barbers = 0; semaphore cutting = 0; semaphore mutex = 1;
int count_cust= 0;
void barber() {
while(true) { //shop is always open
wait(customers); //sleep when there are no waiting customers
wait(mutex); //mutex for accessing customers1
count_cust= count_cust-1; //customer left
signal(barbers);
signal(mutex);
cut_hair();
}
}
void customer() {
wait(mutex); //mutex for accessing count_cust
if (count_cust< n) {
count_cust= count_cust+1; //new customer
signal(customers); signal(mutex);
wait(barbers); //wait for available barbers get_haircut();
}
else { //do nothing (leave) when all chairs are used. signal(mutex);
}
}
cut_hair(){ waiting(cutting);
}
get_haircut(){
get hair cut for some time; signal(cutting);
}
Answer:
The correct answer is:
Option 1: export the query results from the database to a spreadsheet, then export the graph to a document.
Explanation:
Spreadsheets are used to represent numerical data, perform calculations and display the results numerically or graphically.
When using a database, the query results can be exported to other software using the query web address.
So in order to include the graph in her report, Serena will export the result to spreadsheet and then export the graph to document.
Hence,
The correct answer is:
Option 1: export the query results from the database to a spreadsheet, then export the graph to a document.
