When we have signals within 1-2 MHz band, using a waveguide is the most preferred choice for a transmission line. T or F?

A company is executing a strategy to encrypt and sign all proprietary data in transit. The company recently deployed PKI service

Softa [21]

Answer:

A. S/MIME

B. TLS

C. Kerberos

Explanation:

PKI : Public Key Infrastructure is a technique which will allow services or applications to communicate securely across the unsecured network or internet.

PKI mainly consist of CA or Certificate Authority who can issue digital certificates or they are also known as trusted CA. exmaples are godaddy, digicert, verizone, symmantec, etc.. and RA also known as Registration Authorities and they verify if the requested certificates can be stored at CA. Keys will be stored in the central directory.It will also consists of certificate management system and the policies governing PKI.

S/MIME : Secure/Multipurpose Internet Mail Extensions which use assymentric cryptography and sign the MIME data. S/MIME will provide services like Authentication, Encryption , Integrity, Privacy and Non repudiation for messaging applications

SMIME uses certificates which can be self signed or CA certified. It specifies MIME type as $application/pkcs7-mime$ while transmitting the data.

TLS : Transport Layer Security. the earlier versions used to be known as SSL ( Secure Socket Layer) SSLv3 got depreciated and TLSv1.2/1.3 are popularly used to provide encryption, authentication, Integrity and Hashing for client to server side communication.

Most of the applications communicate securely using TLS. They will establish secure TCP connection using SSL Handshake. During the Handshake they will exchange supported versions, ciphersuites and certificates. Applications which uses TLS always uses CA certificates and Inhouse applications can communicate using self signed certificate or even with CA certificates.

HTTPS which is also known as HTTP over SSL is widely used for almost all the web services to communicate securely across the internet.

Kerberos : It is a protocol used to prove the identity for two nodes which are communicating with each other. Kerberos uses both symmetric key cryptography and assymetric key cryptography. However, symmetric key cryptography is used widely and public key cryptography is used optionally.

Authentication server which is also known as AS is used to authenticate the requesting client. It further forwards the user credentials to key distribution center. KDC further issues to TGT ( ticket granting ticket) and it uses TGS's secret key to encrypt. User will receive a encrypted output.

When a User Login then The client authenticates itself to the Authentication Server (AS) which forwards the username to a key distribution center (KDC). The KDC issues a ticket-granting ticket (TGT), which is time stamped and encrypts it using the ticket-granting service's (TGS) secret key and returns the encrypted result to the user's workstation. Sessions will be renewed and managed by users session manager.

4 0

3 years ago

What is the requirement for self-contained recovery devices

dexar [7]

Babahskdjdndnd jbsbsjsjsnsns ndsnssnsnsnxjxjx skzjnansmansna Jaunansmans

4 0

3 years ago

The concept of a process in an operating system embodies two primary characteristics, one of which is:

miv72 [106K]

Answer:

Resource Ownership and Scheduling execution

Explanation:

In process characteristic the characteristic is

Resource ownership
Scheduling / Execution

In Resource ownership, the OS performs a protection function where unwanted interference in processes are with resources

In scheduling execution, the process has execution state and scheduled. They can be separated by resource ownership.

The dispatching of the process is the lightweight process, and it is multi-threading. The ability of the operating system supports the single concurrent process.

The process is a unit in the resource protection and protected the CPU and other processes. It contains the multiple thread execution

Each thread contains the running, ready state and saved the thread context and access the memory. Some necessary activities of the various threads are the same address space and the resources.

7 0

4 years ago

Write a console application that takes an integer input from the user and calculates the factorial of it. Note: factorial of Exa

Stells [14]

Answer:

The program in Python is as follows:

n = int(input("Integer: "))

product = 1

for i in range(1,n+1):

product*=i

if(i!=n):

print(str(i)+" *",end =" ")

else:

print(i,end =" ")

print(" = ",product)

Explanation:

This prompts the user for integer input

n = int(input("Integer: "))

This initializes the product to 1

product = 1

This iterates through n

for i in range(1,n+1):

This multiplies each digit from 1 to n

product*=i

This generates the output string

if(i!=n):

print(str(i)+" *",end =" ")

else:

print(i,end =" ")

This prints the calculated product (i.e. factorial)

print(" = ",product)

4 0

3 years ago

Your solution should for this assignment should consist of five (5)files:==============================================　FuelGaug

olga nikolaevna [1]

Answer: provided in the explanation section

Explanation:

This was implemented in C++

Filename: Car.cpp

#include <iostream>

#include <iomanip>

#include <cstdlib>

#include "Odometer.h"

using namespace std;

int main()

{

char response;

do

{

FuelGuage* myFuel = new FuelGuage(6);

int fuelLevel = myFuel->getFuel();

cout << "Car gas level: " << fuelLevel << endl;

cout << "Car is filling up" << endl;

while(myFuel->getFuel() < 15)

{

myFuel->addFuel();

}

Odometer* car = new Odometer(myFuel, 999990);

cout << "Car gas level: " << car->getFuelGuage()->getFuel() << endl;

cout << "Car is off!" << endl;

cout << "--------------------------" << endl;

while(car->getFuelGuage()->getFuel() > 0)

{

car->addMile();

int miles = car->getMileage();

cout << "Mileage: " << setw(6) << miles << ", Fuel Level: " << car->getFuelGuage()->getFuel() << endl;

cout<<"--------------------------------------------------------------"<<endl;

}

delete myFuel;

delete car;

cout << "Would you like to run the car again(Y/N)? ";

cin >> response;

system("cls||clear");

} while(toupper(response) != 'N');

return 0;

}

Filename: FuelGuage.cpp

#include "FuelGuage.h"

FuelGuage::FuelGuage()

{

init();

}

FuelGuage::FuelGuage(int fuel)

{

init();

this->fuel = fuel;

}

FuelGuage::FuelGuage(const FuelGuage& copy)

{

this->fuel = copy.fuel;

}

void FuelGuage::init()

{

this->fuel = 0;

}

int FuelGuage::getFuel()

{

return fuel;

}

void FuelGuage::addFuel()

{

fuel++;

}

void FuelGuage::burnFuel()

{

fuel--;

}

Filename:FuelGuage.h

#ifndef FUEL_GUAGE_H

#define FUEL_GUAGE_H

class FuelGuage

{

private:

int fuel;

void init();

public:

FuelGuage();

FuelGuage(int fuel);

FuelGuage(const FuelGuage& copy);

int getFuel();

void addFuel();

void burnFuel();

};

#endif

Filename : Odometer.cpp

#include "Odometer.h"

Odometer::Odometer()

{

init();

}

Odometer::Odometer(FuelGuage* inFuel, int inMileage)

{

init();

this->fuel = new FuelGuage(*inFuel);

this->mileage = inMileage;

this->milesSinceAddingFuel = 0;

}

void Odometer::init()

{

fuel = new FuelGuage();

mileage = 0;

milesSinceAddingFuel = 0;

}

FuelGuage* Odometer::getFuelGuage()

{

return fuel;

}

int Odometer::getMileage()

{

return mileage;

}

void Odometer::addMile()

{

if(mileage < 999999)

{

mileage++;

milesSinceAddingFuel++;

}

else

{

mileage = 0;

milesSinceAddingFuel++;

}

if((milesSinceAddingFuel % 24) == 0)

{

fuel->burnFuel();

}

void Odometer::resetMiles()

{

milesSinceAddingFuel = 0;

}

Odometer::~Odometer()

{

delete fuel;

}

Filename: Odometer.h

#ifndef ODOMETER_H

#define ODOMETER_H

#include "FuelGuage.h"

class Odometer

{

private:

void init();

int mileage;

int milesSinceAddingFuel;

FuelGuage* fuel;

public:

Odometer();

Odometer(FuelGuage* inFuel, int inMileage);

FuelGuage* getFuelGuage();

int getMileage();

void addMile();

void resetMiles();

~Odometer();

};

#endif

6 0

3 years ago

When we have signals within 1-2 MHz band, using a waveguide is the most preferred choice for a transmission line. T or F?​

When we have signals within 1-2 MHz band, using a waveguide is the most preferred choice for a transmission line. T or F?