Microsoft Networking Essentials Exam Microsoft Networking Essentials 3

Question 1

A user reports they can ping 127.0.0.1 but cannot ping their default gateway. What does this most likely indicate?

Accepted Answer

The network cable or physical layer connection has a problem

Answer

Successfully pinging 127.0.0.1 confirms the local TCP/IP stack is functional, so the failure to reach the gateway points to a physical connectivity issue such as a bad cable or disconnected switch port.

Question 2

What is the valid host range for the subnet 10.0.4.0/22?

Accepted Answer

10.0.4.1 – 10.0.7.254

Answer

A /22 mask covers 4 Class C blocks; 10.0.4.0/22 spans 10.0.4.0 – 10.0.7.255, so valid hosts are 10.0.4.1 through 10.0.7.254.

Question 3

Which IEEE standard defines the specifications for wireless LAN (Wi-Fi) networking?

Accepted Answer

IEEE 802.11

Answer

IEEE 802.11 is the standard family that defines wireless LAN (Wi-Fi) communications, including variants like 802.11n, 802.11ac, and 802.11ax.

Question 4

What Windows tool can be used to view and clear the ARP cache?

Accepted Answer

arp -a / arp -d

Answer

The arp command with -a displays the ARP cache and -d deletes entries, allowing administrators to view and clear IP-to-MAC mappings.

Question 5

Which protocol is used to automatically assign IP addresses to clients on a network?

Accepted Answer

DHCP

Answer

DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses, subnet masks, default gateways, and DNS server addresses to network clients.

Microsoft Networking Essentials Exam Practice Test

Microsoft Networking Essentials Exam Practice Test

Microsoft Networking Essentials Exam Microsoft Networking Essentials 3