Microsoft Networking Essentials Exam Case Studies & Practical Application 3

Question 1

A network administrator finds that two switches are causing a broadcast storm. Which protocol should be enabled to prevent this?

Accepted Answer

Spanning Tree Protocol (STP)

Answer

OSPF

Answer

DHCP Snooping

Answer

802.1Q

Question 2

A company is migrating from IPv4 to IPv6 but needs both protocols to work simultaneously during the transition. What method supports this?

Accepted Answer

Dual-stack implementation

Answer

CIDR

Answer

VLSM

Answer

NAT64 only

Question 3

An employee reports their laptop gets a 169.254.x.x IP address when connecting to the office network. What does this indicate?

Accepted Answer

The DHCP server is unreachable and APIPA assigned an address

Answer

The laptop has a static IP configured

Answer

The network is using IPv6

Answer

The laptop is connected to a guest VLAN

Question 4

A company's web server is accessible internally but not from the internet. The server has a private IP. What must be configured on the firewall?

Accepted Answer

Port forwarding (DNAT)

Answer

A static route

Answer

A DHCP reservation

Answer

An ACL blocking port 443

Question 5

During a network audit, a technician discovers an unknown device connected to a switch port in the server room. What is the immediate best practice?

Accepted Answer

Disable the port and investigate the device

Answer

Update the switch firmware

Answer

Increase VLAN count

Answer

Run a DHCP scan

Question 6

A branch office connects to headquarters over a leased line but needs a backup connection. What is the most cost-effective backup option?

Accepted Answer

A broadband internet connection with a site-to-site VPN

Answer

A second leased line

Answer

Installing a satellite link

Answer

Using dial-up as backup

Question 7

A user reports their internet speed is much slower than expected. A technician runs a speed test and confirms the issue. What should be checked first?

Accepted Answer

Check for bandwidth-heavy applications, interface errors, and ISP line quality

Answer

Replace the network cable immediately

Answer

Reinstall the OS

Answer

Replace the router