Microsoft Networking Essentials Exam Network Security & Troubleshooting 3

Question 1

What is a MAC address flood attack and what network device is it typically directed against?

Accepted Answer

Fills a switch's CAM table with fake MAC addresses, causing it to broadcast like a hub

Answer

Overwhelms a router's routing table with fake IP routes

Answer

Floods DNS servers with fake hostname requests

Answer

Exhausts DHCP server address pools with fake requests

Question 2

Which command would you use to flush the DNS resolver cache on a Windows computer?

Accepted Answer

ipconfig /flushdns

Answer

ipconfig /release

Answer

netsh int ip reset

Answer

ipconfig /renew

Question 3

What is the purpose of an IDS (Intrusion Detection System) in network security?

Accepted Answer

Monitors network traffic and alerts administrators to potential security threats

Answer

Blocks malicious traffic automatically

Answer

Encrypts data between network nodes

Answer

Manages user authentication

Question 4

A computer receives an IP address starting with 169.254.x.x. What does this indicate?

Accepted Answer

The computer failed to receive an IP address from a DHCP server and self-assigned an APIPA address

Answer

The computer has a valid static IP address

Answer

The computer is connected to a private network

Answer

The computer is behind a NAT device

Question 5

Which troubleshooting approach starts from the Physical layer and works up through the OSI model?

Accepted Answer

Bottom-up approach

Answer

Top-down approach

Answer

Divide-and-conquer approach

Answer

Follow-the-path approach

Question 6

What is the purpose of port scanning in network security assessment?

Accepted Answer

Identify open ports and running services on networked devices to assess potential vulnerabilities

Answer

Block unauthorized access attempts

Answer

Monitor bandwidth usage on network ports

Answer

Assign port numbers to new applications