ISC2 CC Network Security 3

Question 1

Which OSI model layer handles IP addressing and routing between networks?

Accepted Answer

Layer 3 (Network)

Answer

Layer 2 (Data Link)

Answer

Layer 4 (Transport)

Answer

Layer 5 (Session)

Question 2

What is a VLAN (Virtual Local Area Network)?

Accepted Answer

A logical network segment created within a physical network infrastructure

Answer

A wireless networking standard for local areas

Answer

A VPN solution designed for local area networks

Answer

A type of managed network switch

Question 3

What is the purpose of a proxy server?

Accepted Answer

To act as an intermediary between clients and servers, filtering and caching requests

Answer

To assign IP addresses to network devices via DHCP

Answer

To encrypt all network traffic end to end

Answer

To provide redundant network paths for failover

Question 4

What is port scanning used for in security assessments?

Accepted Answer

Identifying open ports and services running on a target system

Answer

Monitoring network bandwidth and throughput usage

Answer

Encrypting communications between network devices

Answer

Managing configuration of network switches

Question 5

What does NAT (Network Address Translation) primarily do?

Accepted Answer

Translates private internal IP addresses to a public IP address for internet access

Answer

Encrypts network traffic before transmission

Answer

Assigns dynamic IP addresses to network devices

Answer

Routes traffic between VLANs on a switch

Question 6

What is the purpose of network traffic encryption?

Accepted Answer

To protect data from being intercepted and read while in transit

Answer

To speed up data transmission across networks

Answer

To authenticate users to network resources

Answer

To prevent denial of service attacks