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2 years ago

Suspicious activity, like IP addresses or ports being scanned sequentially, is a sign of which type of attack?

Computers and Technology

1 answer:

Scrat [10]2 years ago

6 0

Answer: It depends, but it is definitely a networking attack.

Explanation:

After scanning for vulnerable ports, I could go in a number of different directions. I could initiate a DOS attack by flooding a vulnerable port with requests. I could also initiate a Man-in-the-Middle attack by intercepting their network traffic (usually through port 80(HTTP) if it's not encryped). Because of this, it is highly recommended to use a VPN, so hackers have a harder time getting your data

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An author is preparing to send their book to a publisher as an email attachment. The file on their computer is 1000 bytes. When

Yakvenalex [24]

Answer:

See explanation

Explanation:

My explanation to the author is that:

The reduction in size of the attachment doesn't mean that some parts of the book (i.e. the attachment) has been deleted.

I'll also made him understand that the book will retain its original size and contents after downloading by the recipient of the mail.

6 0

2 years ago

Compare the elements of the basic Software Development Life Cycle with 2 other models. How are they similar? How are they differ

Artemon [7]

Answer:

Explanation:

One of the basic notions of the software development process is SDLC models which stands for Software Development Life Cycle models. SDLC – is a continuous process, which starts from the moment, when it’s made a decision to launch the project, and it ends at the moment of its full remove from the exploitation. There is no one single SDLC model. They are divided into main groups, each with its features and weaknesses. The most used, popular and important SDLC models are given below:

1. Waterfall model

2. Iterative model

3. Spiral model

4. V-shaped model

5. Agile model

Stage 1. Planning and requirement analysis

Each software development life cycle model starts with the analysis, in which the stakeholders of the process discuss the requirements for the final product.

Stage 2. Designing project architecture

At the second phase of the software development life cycle, the developers are actually designing the architecture. All the different technical questions that may appear on this stage are discussed by all the stakeholders, including the customer.

Stage 3. Development and programming

After the requirements approved, the process goes to the next stage – actual development. Programmers start here with the source code writing while keeping in mind previously defined requirements. The programming by itself assumes four stages

• Algorithm development

• Source code writing

• Compilation

• Testing and debugging

Stage 4. Testing

The testing phase includes the debugging process. All the code flaws missed during the development are detected here, documented, and passed back to the developers to fix.

Stage 5. Deployment

When the program is finalized and has no critical issues – it is time to launch it for the end users.

SDLC MODELS

Waterfall – is a cascade SDLC model, in which development process looks like the flow, moving step by step through the phases of analysis, projecting, realization, testing, implementation, and support. This SDLC model includes gradual execution of every stage completely. This process is strictly documented and predefined with features expected to every phase of this software development life cycle model.

ADVANTAGES

Simple to use and understand

DISADVANTAGES

The software is ready only after the last stage is over

ADVANTAGES

Management simplicity thanks to its rigidity: every phase has a defined result and process review

DISADVANTAGES

High risks and uncertainty

Iterative SDLC Model

The Iterative SDLC model does not need the full list of requirements before the project starts. The development process may start with the requirements to the functional part, which can be expanded later.

ADVANTAGES

Some functions can be quickly be developed at the beginning of the development lifecycle

DISADVANTAGES

Iterative model requires more resources than the waterfall model

The paralleled development can be applied Constant management is required

Spiral SDLC Model

Spiral model – is SDLC model, which combines architecture and prototyping by stages. It is a combination of the Iterative and Waterfall SDLC models with the significant accent on the risk analysis.

4 0

1 year ago

1- Design a brute-force algorithm for solving the problem below (provide pseudocode): You have a large container with storage si

sladkih [1.3K]

Answer:

Pseudocode is as follows:

// below is a function that takes two parameters:1. An array of items 2. An integer for weight W

// it returns an array of selected items which satisfy the given condition of sum <= max sum.

function findSubset( array items[], integer W)

{

initialize:

maxSum = 0;

ansArray = [];

// take each "item" from array to create all possible combinations of arrays by comparing with "W" and // "maxSum"

start the loop:

// include item in the ansArray[]

ansArray.push(item);

// remove the item from the items[]

items.pop(item);

ansArray.push(item1);

start the while loop(sum(ansArray[]) <= W):

// exclude the element already included and start including till

if (sum(ansArray[]) > maxSum)

// if true then include item in ansArray[]

ansArray.push(item);

// update the maxSum

maxSum = sum(ansArray[items]);

else

// move to next element

continue;

end the loop;

// again make the item[] same by pushing the popped element

items.push(item);

end the loop;

return the ansArray[]

}

Explanation:

You can find example to implement the algorithm.

3 0

2 years ago

B.) Define latency and jitter for service flow in a fixed wireless system.

yuradex [85]

The answer would be between the base station and the subscriber station.

7 0

2 years ago

Constantine forms the following hypothesis. Let n be any non-negative number that meets the following condition: when n is divid

notka56 [123]

Answer:

n=5

Explanation:

if n= 5

i. n/5=5/5=1 so it divides completely the remainder is 0

ii. 97 - 6(5) = 97 - 30 = 67, 67 is a prime number.

8 0

2 years ago