Subnetting / IP addressing

What is the subnet mask for a /18?

255.255.192.0

What is the subnet mask for a /20?

255.255.240.0

What is the subnet mask for a /24?

255.255.255.0

What is the slash notation for the subnet mask 255.255.255.240?

/28

What is the broadcast address of the network 192.168.203.100 255.255.255.252

192.168.203.103

What is the subnet mask for a /8?

255.0.0.0

What is the maximum number of valid hosts one will have from the network 192.168.91.0 255.255.255.224

30

What is the network address for a host with the IP Address 133.87.183.169 /15?

133.86.0.0

What is the last host address for a host with the IP Address 133.87.183.169 /15?

133.87.255.254

What is the subnet mask for a host with the IP Address 133.87.183.169 /15?

255.254.0.0

What is the network address for a host with the IP Address 234.207.1.175/20?

234.207.0.0

What is the last host address for a host with the IP Address 234.207.1.175/20?

234.207.15.254

What is the subnet mask for a host with the IP Address 234.207.1.175/20?

255.255.240.0

CIDR

Classless Interdomain Routing (CIDR)

DDN

Dotted-decimal notation (DDN)

DHCP

Dynamic Host Configuration Protocol (DHCP)

How do you calculate the number of subnets created?

2^s

NAT

Network Address Translation (NAT)

VLSM

Variable-length subnet masks (VLSM)

What's the formula to calculate the number of hosts per IPv4 subnet?

2^H - 2

What's the RFC 1918 address space?

10.0.0.0/8

172.16.0.0/12

192.168.0.0/16

What's the subnet address?

It is the numerically smallest number in the subnet. It cannot be assigned to a host.

Which IP is assigned the subnet broadcast address?

The last (numerically highest) IP in the subnet.

Class A range

1-126 (unicast)

Class B range

128-191 (unicast)

Class C range

192-223 (unicast)

Class D range

224-239 (multicast)

Class E range

240-255 (reserved)

/23 subnet mask in DDN

255.255.254.0

/28 subnet mask in DDN

255.255.255.240

/30 subnet mask in DDN

255.255.255.252

240 in binary

11110000

255 in binary

11111111

What's the subnet address of 1.99.53.76 255.255.255.248?

1.99.53.72

What's the subnet address of 10.77.55.3 255.248.0.0?

10.72.0.0

What's the subnet broadcast address of 172.30.99.4 255.255.255.128?

172.30.99.127

What's the subnet broadcast address of 192.168.6.54 255.255.255.252?

192.168.6.55

What's the valid host address range for the 172.22.55.77 255.255.0.0 network?

172.22.0.1 - 172.22.255.254

If the host portion of an IPv4 address is all 0s, what kind of address is it?

network address

If the host portion of an IPv4 address is all 1s, what kind of address is it?

broadcast address

IPv4 addresses beginning with 127 are used for [...] addresses.

loopback

What are the groups of 8 bits in an IP address called?

octets

What kind of address is used to test the network software stack on the local device?

loopback address

Which IPv4 address class allows a total of 254 hosts per network?

Class C

Which IPv4 address class contains a total of 128 networks?

Class A

Which IPv4 address class allows a total of 16,777,214 hosts per network?

Class A

Which IPv4 address class allows a total of 65,534 hosts per network?

Class B

Which IPv4 address class contains a total of 16,384 networks?

Class B

Which IPv4 address class contains a total of 2,097,152 networks?

Class C