D412 Network Analytics and Troubleshooting - Set 4 - Part 1

Correct Answer: SSH

SSH (Secure Shell) is a protocol that provides secure, encrypted communication over an insecure network and is often used for remote management of devices.

Correct Answer: show ip route

The show ip route command displays the current IP routing table on a Cisco router, showing the routes configured and available.

Correct Answer: Mean Time to Repair

MTTR (Mean Time to Repair) refers to the average time required to repair a failed component or device in a network or system.

Correct Answer: RIP

RIP (Routing Information Protocol) uses hop count as its metric and is limited to a maximum of 15 hops to prevent routing loops.

Correct Answer: Act on behalf of a client to request services from another server

A proxy server acts as an intermediary between a client and a server, forwarding client requests to other servers.

Correct Answer: Session layer

The Session layer (Layer 5) is responsible for establishing, managing, and terminating sessions between devices.

Correct Answer: Evil twin

An evil twin attack involves setting up a rogue access point that mimics a legitimate one, tricking users into connecting to it.

Correct Answer: Mesh

A mesh topology provides redundancy by connecting each node to every other node in the network, ensuring multiple paths for data transmission.

Correct Answer: Router

A router operates at the OSI Network layer (Layer 3) and is responsible for routing traffic between different networks based on IP addresses.

Correct Answer: ipconfig

The ipconfig command on a Windows machine displays the current IP address configuration, including the default gateway.

Correct Answer: WEP

WEP (Wired Equivalent Privacy) is considered outdated due to significant vulnerabilities and has been replaced by more secure protocols like WPA and WPA2.

Correct Answer: SNMP

SNMP (Simple Network Management Protocol) is used to manage network devices and gather performance statistics such as bandwidth usage and error rates.

Correct Answer: To separate logical network segments on the same physical network

A VLAN (Virtual Local Area Network) separates logical network segments on the same physical network, improving security and traffic management.

Correct Answer: PTR record

A PTR (Pointer) record is used in DNS to reverse-map an IP address to its corresponding domain name.

Correct Answer: To filter incoming and outgoing traffic based on security rules

A firewall filters incoming and outgoing traffic based on security rules, protecting the network from unauthorized access and attacks.

Correct Answer: route

The route command displays the routing table on a Linux system, showing the routes that the system uses to forward network traffic.

Correct Answer: ARP

ARP (Address Resolution Protocol) is used to map an IP address to a MAC address on a local network.

Correct Answer: Presentation layer

The Presentation layer (Layer 6) is responsible for data encryption and decryption, ensuring secure transmission of data between applications.

Correct Answer: ifconfig

The ifconfig command is used on Linux systems to display the current IP address configuration for network interfaces.

Correct Answer: VPN

VPN (Virtual Private Network) uses tunneling protocols like PPTP, L2TP, or IPsec to create secure connections over a public network like the internet.