A small business discovers malicious software that has locked its files and is preventing staff from accessing them. What type of malware could cause this?
8 Network Security Basics Online Quiz Questions
Use this free practice quiz with 20 questions to review 8 Network Security Basics, test your knowledge, and prepare for your next test or exam.
An attacker exploits a known weakness in an unpatched server to gain access. The attacker is a threat, and the unpatched weakness is a vulnerability. Is this statement true or false?
- A
True
- B
False
A clinic wants its staff to be able to use patient scheduling systems whenever needed. Which security principle is most directly concerned with this goal?
- A
Confidentiality
- B
Availability
- C
Integrity
- D
Least privilege
Separating systems into zones and limiting traffic between them is called network .
A support account needs to reset passwords but does not need permission to change network-wide security settings. Which principle calls for giving that account only the access required for its task?
A company configures a firewall to allow required web traffic. Which limitation should its security team still account for?
- A
It automatically repairs vulnerable devices.
- B
It makes every connection safe once a rule is created.
- C
It may not stop an attack that uses an allowed connection.
- D
It prevents all unauthorized changes to stored information.
A team is hardening a newly deployed server. Select all actions that align with the recommended secure configuration and access practices.
- A
Install security updates.
- B
Change default credentials.
- C
Keep default credentials for convenience.
- D
Disable unused services.
- E
Limit administrative access.
A laptop is encrypted, so a staff member assumes that a stolen account used to access it cannot pose a security risk. Is this assumption correct?
- A
True
- B
False
An attack overwhelms a service with traffic, making it difficult for legitimate users to connect. This is a attack.
A browser exchanges sensitive information with a website over a network. Which kind of encryption is TLS intended to help provide for that exchange?
- A
Encryption at rest
- B
Encryption in transit
- C
Network segmentation
- D
A tested backup
After a suspected intrusion, a team wants to investigate what happened and restore important data if necessary. Select all measures that directly support these two goals.
- A
Keep logs of system activity.
- B
Allow every network connection by default.
- C
Maintain tested backups.
- D
Rely on encryption alone to restore deleted data.
A small office uses a firewall but is concerned that a single safeguard may not be enough. Describe how it could apply defense in depth, naming at least two complementary safeguards and explaining what each contributes.
A business finds that malicious software has locked its files and is preventing staff from accessing them. What type of malware could cause this?
An employee receives a deceptive message directing them to a fake sign-in page that collects their password. Which threat best describes this tactic?
- A
Network segmentation
- B
Eavesdropping
- C
Phishing
- D
A denial-of-service attack
A team keeps tested backups and redundant systems so employees can continue using important services if one system fails. Which security goal are these measures primarily supporting?
- A
Confidentiality
- B
Integrity
- C
Availability
- D
Least privilege
An attacker exploits a server that has not received a security update. Which statement correctly distinguishes the threat from the vulnerability?
- A
The threat is the unpatched server, and the vulnerability is the attacker.
- B
The unpatched server is a vulnerability that a threat may exploit.
- C
The unpatched server is an attack, while the threat is the resulting damage.
- D
A threat and a vulnerability mean the same thing in this situation.
True or false: A firewall alone guarantees that a system cannot be attacked through a connection its rules allow.
- A
True
- B
False
An organization gives each employee account only the permissions needed to perform that employee's tasks. What security principle does this apply?
A small organization hosts a public web server and has staff workstations on its network. Which firewall policy best follows the principle of permitting only necessary traffic?
- A
Allow every incoming connection so legitimate users are never blocked.
- B
Allow only required services to reach the public server and block unsolicited connections to staff workstations.
- C
Block all traffic to the public server, but allow all traffic to staff workstations.
- D
Use the firewall to replace software updates and account access controls.
A company encrypts sensitive files on employee laptops. Which statement best describes a remaining security limitation?
- A
Encryption makes a compromised device safe as long as the files are encrypted.
- B
Encryption prevents unauthorized access even if an account is stolen.
- C
Encryption helps protect data, but does not by itself make a compromised device or stolen account safe.
- D
Encryption guarantees that data remains accurate and available under all circumstances.