Answer:
In c# Dictionary is the collection of keys and value .The dictionary is a generic collection class which is in the System.Collection.Generics namespace. we can represent dictionary like that Dictionary<TKey, TValue> where TKey represent the type of key and TValue is the type of TValue.
Following are the example which represent dictionary as integer and string
using System.Collections.Generic; // namespace
class Test // class test
{
static void Main() // main method
{
var ob = new Dictionary< int,string>(); // type integer and string
dictionary.Add( 2,"hello");
dictionary.Add(143,"hello1);
// The dictionary has 2 pairs.
Console.WriteLine("DICTIONARY 1 " + ob.Count);
}
}
Output:
DICTIONARY 1 :2
Explanation:
In this program we create a dictionary generic class which is integer and string type after that we add the elements in the dictionary by "dictionary.Add method " and finally print the count of dictionary
B) each person gets to contribute in their own unique way
Answer:
The output to this given question is "Is it warm: true".
Explanation:
In this question firstly two-variable defines that are isRaining and isCloudy. In those variables assign false value. Then we define another variable that is isSunny. In isSunny variable, we check condition that is if variable isRaining not AND (logical gate) variable isCloudy not equal to isSunny. The AND logical gate is used to check that both condition is true or not. Then we define another variable that is isWarm. In this variable, we check condition if isSunny OR (logical operator) isSummer is true. The OR operator is used to check in both value if one condition will true it will print true. At the last will print the value.
Complete Question:
Firewall implementation and design for an enterprise can be a daunting task. Choices made early in the design process can have far-reaching security implications for years to come. Which of the following firewall architecture is designed to host servers that offer public services?
a) Bastion Host
b) Screened subnet
c) Screened host
d) Screened
Answer:
b) Screened subnet
Explanation:
In Computer science, Firewall implementation and design for an enterprise can be a daunting task. Choices made early in the design process can have far-reaching security implications for years to come.
Screened subnet firewall architecture is designed to host servers that offer public services.
In network security and management, one of the network architecture used by network engineers for the prevention of unauthorized access of data on a computer is a screened subnet. A screened subnet can be defined as a network architecture that uses a single firewall with three screening routers as a firewall.
<em>A screened subnet is also known as a triple-homed firewall, this is because it has three (3) network interfaces;</em>
1. Interface 1: it is known as the external or access router, which is a public interface and connects to the global internet.
2. Interface 2: it is known as the demilitarized zone or perimeter network, which acts as a buffer and hosted public servers (bastions host) are attached herein.
3. Interface 3: it is known as the internal router, which is a subnet that connects to an intranet.
<em>The screened subnet when properly configured helps to prevent access to the internal network or intranet. </em>
