D315 Network and Security Foundations - Set 4 - Part 1

Test your knowledge of technical writing concepts with these practice questions. Each question includes detailed explanations to help you understand the correct answers.

Question 1: What is the purpose of a firewall in a network?

To filter and control incoming and outgoing network traffic

To provide network access to external users

To assign IP addresses to devices

To encrypt network communications

Question 2: What is the primary function of a router?

To broadcast data to all devices on a network

To connect different networks and route data between them

To store and forward emails

To manage wireless network connections

Question 3: Which wireless standard offers the fastest speed and range?

802.11b

802.11g

802.11n

802.11ac

Question 4: What type of encryption uses a pair of keys, one for encryption and one for decryption?

Symmetric encryption

Asymmetric encryption

Hashing

Block encryption

Question 5: Which network device can amplify and retransmit signals to extend the network range?

Router

Switch

Repeater

Bridge

Question 6: Which OSI layer is responsible for ensuring data is error-free before passing it on?

Application

Data Link

Network

Transport

Question 7: What is the primary role of the Data Link layer in the OSI model?

Logical addressing and routing

Physical data transmission

Flow control and error detection

Data compression and encryption

Question 8: Which wireless security protocol is the most secure and recommended for modern networks?

WEP

WPA

WPA2

WPA3

Question 9: What type of device is used to connect different network segments and perform packet forwarding based on MAC addresses?

Switch

Router

Hub

Repeater

Question 10: Which command would you use to view the IP configuration of a Windows device?

ping

traceroute

netstat

ipconfig

Question 11: What is the primary function of a VPN?

To encrypt network data between endpoints

To allocate IP addresses to devices

To monitor network traffic

To control access to the internet

Question 12: What network topology connects all devices to a central hub or switch?

Bus

Star

Ring

Mesh

Question 13: Which protocol is used to automatically assign IP addresses to devices on a network?

DNS

DHCP

ARP

ICMP

Question 14: What does a VLAN (Virtual Local Area Network) allow you to do?

Physically separate devices on different networks

Logically group devices on different physical networks

Extend the range of a wireless network

Monitor network traffic

Question 15: What is the function of ARP (Address Resolution Protocol)?

To resolve domain names into IP addresses

To resolve IP addresses into MAC addresses

To assign IP addresses to devices

To monitor network traffic

Question 16: What command is used to test connectivity between two devices on a network?

ping

ipconfig

traceroute

nslookup

Question 17: What is the maximum theoretical data transfer rate of a CAT6 cable?

100 Mbps

1 Gbps

10 Gbps

100 Gbps

Question 18: Which device acts as an intermediary between a local network and external networks, such as the internet?

Switch

Router

Firewall

Hub

Question 19: What is the purpose of a subnet mask in networking?

To encrypt data for secure communication

To divide an IP address into network and host portions

To assign MAC addresses to devices

To monitor network performance

Question 20: What is the function of DNS (Domain Name System)?

To assign IP addresses to devices

To monitor network traffic

To translate domain names into IP addresses

To encrypt network communications

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