D315 Network and Security Foundations - Set 5 - Part 1

Correct Answer: route

The route command displays the routing table of a network device, showing how packets will be forwarded.

Correct Answer: MAC address

MAC addresses are used at the Data Link layer to uniquely identify devices on a network.

Correct Answer: Forward data to the correct MAC address

A switch operates at the Data Link layer and forwards data based on MAC addresses.

Correct Answer: ARP

ARP (Address Resolution Protocol) is used to map IP addresses to MAC addresses in a local network.

Correct Answer: Star

In a star topology, all devices are connected to a central hub or switch, allowing data to flow through a central point.

Correct Answer: To block unauthorized access

Firewalls are security devices that filter incoming and outgoing network traffic based on predefined security rules.

Correct Answer: To translate domain names into IP addresses

DNS (Domain Name System) is responsible for resolving human-readable domain names into machine-readable IP addresses.

Correct Answer: Router

A router operates at Layer 3 (Network layer) of the OSI model, routing data between different networks using IP addresses.

Correct Answer: To allow multiple devices to share a single public IP address

NAT allows multiple devices on a private network to share a single public IP address for accessing the internet.

Correct Answer: Star

The star topology is the most common topology used in modern LANs, where each device connects to a central hub or switch.

Correct Answer: WPA2

WPA2 (Wi-Fi Protected Access 2) is considered the most secure protocol for protecting wireless networks.

Correct Answer: FTP

FTP (File Transfer Protocol) is used to transfer files between computers over a network.

Correct Answer: Assign IP addresses to devices automatically

DHCP (Dynamic Host Configuration Protocol) servers automatically assign IP addresses to devices on a network.

Correct Answer: To route data to specific applications or services

Port numbers are used to direct data to the correct application or service on a device.

Correct Answer: Transport

The Transport layer ensures error-free data transmission by managing flow control, error correction, and retransmission of lost data.

Correct Answer: DoS (Denial of Service)

A DoS attack involves overwhelming a system with excessive traffic to disrupt its normal functioning.

Correct Answer: SSH

SSH (Secure Shell) provides a secure way to access remote devices and transmit data over the internet by encrypting the communication.

Correct Answer: Switch

A switch segments a network by dividing it into multiple smaller sections, reducing broadcast traffic and improving overall network performance.

Correct Answer: To encrypt communication over public networks

A VPN creates a secure, encrypted connection over public networks, ensuring that data remains confidential during transmission.

Correct Answer: 802.11ac

802.11ac offers the highest data transfer rates among the wireless standards, supporting gigabit speeds.