Data Communication Quiz

What is the role of Internet Exchange Points (IXPs) in data communication?

• They charge ISPs for data exchange.

• They connect and exchange data between ISPs.

• They provide internet access to end users.

• They are used for storing data.

What is a characteristic of Asymmetric DSL?

• It uses a single channel for data transmission.

• It has equal upstream and downstream speeds.

• It uses FDM to create separate channels.

• It requires rewiring of telephone lines.

What does Customer Premises Equipment (CPE) include?

• A modem for internet access.

• A line splitter for separating voice and data transmission.

• A router for wireless connectivity.

• A fiber optic cable for high-speed internet.

What is the function of an Optical Network Unit (ONU) in Fiber to the Home (FTTH)?

• It amplifies the signal for long-distance transmission.

• It converts optical signals into an ethernet format.

• It provides wireless internet access.

• It stores data for later use.

What are the three main goals in network security?

• Confidentiality, Integrity, Availability

• Speed, Efficiency, Reliability

• Confidentiality, Speed, Integrity

• Availability, Efficiency, Security

Which category of threat mainly affects confidentiality but can also affect integrity?

• Business Continuity

• Preventing Unauthorized Users

• Device Failure Protection

• Denial of Service

What is the primary purpose of preventative network controls?

• To fix unwanted events or intrusions

• To reveal or discover unwanted events

• To mitigate or stop a person or event

• To increase network speed

What is the biggest threat identified in risk assessment frameworks?

• Phishing

• Malware

• Hardware Failure

• Data Breach

What is a common defense against Denial of Service (DoS) attacks?

• Increasing bandwidth

• Flooding it back

• Installing antivirus software

• Using a VPN

What is the best thing to prevent device failure according to the document?

• Regular software updates

• Redundancy within the internet connection

• Installing firewalls

• Using cloud storage