Computer Science - 4CP0 PearsonEdexcel

Network Security

Akopọ

Every network that connects to anything else is a target. Some attacks exploit a technical flaw in software; many more exploit a person, tricked into handing over the one piece of information a well-built firewall cannot stop: their own password. Defending a network means addressing both.

This lesson covers how organisations control who and what can access a network, the specific risks that come with cloud and other modern storage, the technical and behavioural attacks a network must defend against, how vulnerabilities are found before an attacker finds them, and the practices that keep software itself secure by design.

Awọn Afojusun

  1. Understand the importance of network security and be able to use appropriate validation and authentication techniques (access control, physical security and firewalls)
  2. Understand security issues associated with the cloud and other contemporary storage
  3. Understand different forms of cyber attack (based on technical weaknesses and behaviour), including social engineering (phishing, shoulder surfing, pharming), unpatched software, USB devices, digital devices and eavesdropping
  4. Understand methods of identifying vulnerabilities, including penetration testing, ethical hacking, commercial analysis tools and review of network and user policies
  5. Understand how to protect software systems from cyber attacks, including considerations at the software design stage, audit trails, securing operating systems, secure coding, code reviews, modular testing and effective network security provision

Akọ̀wé Ẹ̀kọ́

A network connects valuable things: personal data, financial records, intellectual property, and the systems an organisation depends on to operate. Security failures are costly in more than one way: stolen data can be sold or used for fraud, a disabled system can halt a business, and a breach damages the trust customers place in an organisation, sometimes permanently. Because attacks can come from outside the network or from someone with legitimate access misusing it, effective security has to control both who can get in and what they are allowed to do once they are in.

O wa lori ohun elo Green Bridge

Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.

Awọn akọsilẹ ẹkọ ni kikun pẹlu awọn aworan apejuwe
Oluranlọwọ ẹkọ ti AI ṣe agbara rẹ
Kọ ẹkọ laisi intanẹẹti, nigbakugba, nibikibi
O wa lori Android, Windows, macOS, ati Linux

Ìdánwò Ẹ̀kọ́

Oriire fun ipari ẹkọ lori Network Security. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.

Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.

Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.

  1. Which term describes proving that a user is who they claim to be? A) Validation B) Authentication C) Access control D) Encryption Answer: B
  2. An attacker redirects a user to a fake website even though the user typed the correct web address. This is an example of: A) Phishing B) Shoulder surfing C) Pharming D) Eavesdropping Answer: C
  3. Which of the following is an authorised, controlled attempt to break into a system to find security weaknesses? A) Hacking B) Penetration testing C) Phishing D) Cracking Answer: B
  4. Why is unpatched software a common security risk? A) It runs more slowly than updated software B) The vulnerability it contains is often already publicly documented by the update that fixes it C) It cannot connect to a network D) It is always more expensive to maintain Answer: B
  5. Which of the following best describes an audit trail? A) A firewall rule blocking certain IP addresses B) A log recording user activity on a system C) A password policy for user accounts D) An encrypted connection to a website Answer: B

O wa lori ohun elo Green Bridge

Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.

Awọn akọsilẹ ẹkọ ni kikun pẹlu awọn aworan apejuwe
Oluranlọwọ ẹkọ ti AI ṣe agbara rẹ
Kọ ẹkọ laisi intanẹẹti, nigbakugba, nibikibi
O wa lori Android, Windows, macOS, ati Linux

O wa lori ohun elo Green Bridge

Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.

Awọn akọsilẹ ẹkọ ni kikun pẹlu awọn aworan apejuwe
Oluranlọwọ ẹkọ ti AI ṣe agbara rẹ
Kọ ẹkọ laisi intanẹẹti, nigbakugba, nibikibi
O wa lori Android, Windows, macOS, ati Linux

Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe

Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Network Security? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.

Ṣe igbasilẹ ohun elo naa lori Google Playstore

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