MD-100 100: Network Configuration 5 — Questions and Answers
Question 1: A Windows 10 PC joined to a domain cannot reach the domain controller. The PC can ping external websites by IP. Which tool helps diagnose DNS resolution for the domain?
- nslookup (Correct answer)
- ping
- ipconfig /displaydns
- tracert
Correct answer: nslookup
nslookup queries DNS servers directly and can reveal whether the domain controller's hostname resolves correctly.
Question 2: Which Windows 10 feature automatically assigns an IPv6 address to a host without requiring a DHCPv6 server?
- SLAAC (Stateless Address Autoconfiguration) (Correct answer)
- APIPA
- DHCPv4
- Link-Local only mode
Correct answer: SLAAC (Stateless Address Autoconfiguration)
SLAAC uses router advertisements to allow hosts to generate their own IPv6 global unicast addresses without DHCPv6.
Question 3: A Windows 10 user connects to a VPN but cannot access local network resources while connected. What setting likely needs to be disabled?
- Use default gateway on remote network (split tunneling should be enabled) (Correct answer)
- DNS registration
- NetBIOS over TCP/IP
- DHCP automatic assignment
Correct answer: Use default gateway on remote network (split tunneling should be enabled)
When 'Use default gateway on remote network' is enabled, all traffic routes through the VPN; disabling it enables split tunneling so local traffic uses the local network.
Question 4: Which PowerShell cmdlet displays all IP addresses assigned to network adapters on a Windows 10 PC?
- Get-NetIPAddress (Correct answer)
- Get-NetAdapter
- Get-NetRoute
- Get-DnsClientServerAddress
Correct answer: Get-NetIPAddress
Get-NetIPAddress lists all IP addresses (IPv4 and IPv6) configured on all network interfaces.
Question 5: A Windows 10 technician needs to add a static route so that traffic to 10.20.0.0/24 goes through a specific gateway at 192.168.1.254. Which command accomplishes this?
- route add 10.20.0.0 mask 255.255.255.0 192.168.1.254 (Correct answer)
- netsh route add 10.20.0.0/24 gw=192.168.1.254
- ipconfig /route add 10.20.0.0 192.168.1.254
- netsh int ip add route 10.20.0.0/24 192.168.1.254
Correct answer: route add 10.20.0.0 mask 255.255.255.0 192.168.1.254
The route add command adds a static route specifying the network, subnet mask, and gateway address.
Question 6: A Windows 10 PC shows a valid IP address but cannot browse the internet. Running 'ping 8.8.8.8' succeeds but 'ping google.com' fails. What is the problem?
- DNS resolution is failing (Correct answer)
- The default gateway is unreachable
- The network cable is faulty
- The firewall is blocking all traffic
Correct answer: DNS resolution is failing
Successful ping by IP but failed ping by name confirms DNS resolution is the issue, not connectivity itself.
Question 7: Which Windows 10 setting determines whether the PC automatically connects to known Wi-Fi networks when in range?
- Connect automatically checkbox in the Wi-Fi network properties (Correct answer)
- Network Discovery setting in Advanced Sharing
- Airplane mode toggle
- Metered connection setting
Correct answer: Connect automatically checkbox in the Wi-Fi network properties
The 'Connect automatically' checkbox in each Wi-Fi network's properties controls whether Windows reconnects to that network when in range.
MD-100 100: Network Configuration 5
A Windows 10 PC joined to a domain cannot reach the domain controller.
The PC can ping external websites by IP.
Which tool helps diagnose DNS resolution for the domain?