Networking Fundamentals Quiz

How many usable IPs are in the subnet 192.168.0.0/28?

• 12

• 14

• 16

• 10

What does DNS do in a network?

• Assigns IP addresses to devices

• Tests if a device is reachable

• Translates domain names to IP addresses

• Sets up subnets for cloud VMs

Which of these is a private IP address?

• 8.8.8.8

• 172.16.10.5

• 203.0.113.1

• 74.125.224.72

What tool tests if a device responds on a network?

• DHCP

• Ping

• DNS

• CIDR

How many usable IPs are in the subnet 10.10.20.0/29?

• 6

• 8

• 4

• 10

Describe the function of DHCP. Which is correct?

• It blocks traffic between subnets

• It automatically assigns IP addresses to devices

• It converts binary IPs to decimal

• It pings devices to check connectivity

In 10.0.1.0/24, why can’t a VM use 10.0.1.255?

• It’s the network address

• It’s a private IP

• It’s the broadcast address

• It’s already assigned to DNS

If ping fails to a cloud VM, what might be wrong?

• The subnet mask is too small

• The VM is offline or blocked by a firewall

• DHCP forgot to assign an IP

• DNS is assigning the wrong name

Which CIDR gives at least 30 usable IPs for an auto-scaling group?

• /30

• /29

• /27

• /28

Convert this binary IP to decimal: 11001000.00001010.00000001.00000011