CompTIA A+ Core 2: Operating System & Network Management

 

Question:

Which Windows command bypasses the DNS client cache and tests DNS name resolution?

• nslookup

Question

:

A user complains that they are unable to access the Internet from their laptop. Upon further examination you notice that the user station IP address begins with 169.254. What does this mean?

• A DHCP server was not found on the network

Question

:

Which Windows command starts the control panel tool?

• control panel

Question

:

Which type of firewall is Windows Defender firewall?

• Packet filtering

Question

:

Which type of VPN uses port 443 and is considered to be “firewall friendly?”

• SSTP

Question

:

Users complain about slow VPN access from their Windows laptops when they leave the office. You discover that users are enabling smartphone Wi-Fi hotspots that they connect their laptops to when out of the office. How can you ensure VPN access is unavailable over smartphone Wi-Fi hotspots?

• Configure the Wi-Fi network as a metered network, disable the “Allow VPN over metered networks” option

Question

:

Which Linux command shows IP addresses on a Linux host?

• ip a

Question

:

Which network service is required for Active Directory to function?

• DNS

Question

:

Which macOS tool is used to create backups?

• Time Machine

Question

:

You are using the Windows file explorer tool and have navigated to a folder deep in the file system hierarchy. You would like to issue PowerShell commands in this directory. What should you do?

• Hold SHIFT, right-click the folder and choose “Open PowerShell window here”

Question

:

Which port does a DNS server listen for client queries on?

• UDP 53

Question

:

Which type of record resolves and IPv6 address to a FQDN?

• AAAA

Question

:

How do client stations discover Active Directory domain controllers?

• DNS service location records

Question

:

How many bits are in an IPv6 IP address?

• 128