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LenKa [72]
3 years ago
11

Can you determine if an external web site was likely accessed from a computer in you department a couple of seconds ago?

Computers and Technology
1 answer:
fredd [130]3 years ago
3 0

Answer:

Yes, it can be determined if an an external web site was likely accessed from a computer in the same department a couple of seconds ago.

Explanation:

Yes. “Dig” can be used to search that website in the local DNS server. A practical example would be to insert “dig google.com” and that will give us the result of the query time for searching and finding google.com. Supposing google.com was accessed a few seconds ago, then an entry for google.com is cached in the local DNS cache and the search or query time is 0 msec. If not the query time will be large.

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A ____ is a device that interconnects two or more workstations in a star-wired bus local area network and immediately retransmit
prisoha [69]

Answer:

A HUB

Explanation:

A hub can described as an hardware or network device use for multi purpose functions like connecting series of internet devices together there by making it possible for all devices to work or function together on a single network.

Hubs are classified into active hub, passive hub, and intelligent hub.

ACTIVE HUB: This type of hub boost the signals but can not perform calculations.

PASSIVE HUB: this type only send the signals but can not boost a signal.

INTELLIGENT HUB: it brings about the boosting of signals and also bring about packets to be analyzed.

7 0
3 years ago
A device is sending out data at the rate of 1000 bps. How long does it take to send
vredina [299]

Answer:

0.01 second ; 0.008 seconds; 800 seconds

Explanation:

Given that:

Sending rate = 1000 bps

Rate of 1000 bps means that data is sent at a rate of 1000 bits per second

Hence, to send out 10 bits

1000 bits = 1 second

10 bits = x

1000x = 10

x = 10 / 1000

x = 0.01 second

2.)

A single character 8 - bits

1000 bits = 1 second

8 bits = (8 / 1000) seconds

= 0.008 seconds

3.)

100,000 characters = (8 * 100,000) = 800,000

1000 bits = 1 second

800,000 bits = (800,000 / 1000)

= 800 seconds

4 0
3 years ago
Write the following program in C++ to print:
Alenkinab [10]
1.
#include <iostream>#include <string>
using namespace std;
int main(){    string chars; // This is where we will put our @ signs and print them    for(int x=0;x < 5; x++){
        chars = chars + '@'; // This will concatenate an @ sign at the end of the variable        cout << chars << "\n";    }}

2.
#include <iostream>#include <string>
using namespace std;
int main(){    string name; // Our variable to store the name    cout << "What is your name? \n"; // Asks the user for their name    cin >> name;    cout << "\nWell, hello " << name << "!";}

3.
#include <iostream>#include <string>
using namespace std;
int main(){    int number; // Our variable    cout << "Enter a number\n"; // Asks for a number    cin >> number;    cout << "You entered " << number << "%!";}

4.
#include <iostream>#include <string>
using namespace std;
int main(){    int number; // Our variable    cout << "Enter a number\n";    cin >> number;
    int check = number % 2; // The modulo operator (the percent sign) gets the remainder of the quotient    if (check == 0) {        cout << number << " is even!"; // If the remainder is 0 then it prints out "x is even"    } else {        cout << number << " is odd!"; // If the remainder is not 0 then it prints out "x is odd"    }}

5.
#include <iostream>#include <string>
using namespace std;
int main(){    float r; // Our variable    cout << "Enter a radius\n";    cin >> r;    if (r < 0){        cout << "Lol. No."; // If the radius is less than zero print out that message    }    float circumference=2*3.14*r;    float area=r*r*3.14;    cout << "\n\n Circumference of circle: " << circumference;    cout << "\n Area of circle: " << area;}
4 0
3 years ago
How can i repair computer processor?
Lisa [10]
Short answer, you don't. Modern Processors are made up of billions of transistors and are built in multi million dollar factories that have equipment just for that purpose.
8 0
3 years ago
When the degree of color contrast between items is low, the content is easier to see and read. True or False
Alexus [3.1K]

the answer is false

hope that helps

3 0
3 years ago
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