IP addressing and subnetting relating the the Cisco CCNA test. Flashcards
CCNA-AI_IPaddressing
What is the purpose of an IP address?
To uniquely identify a device on a network.
What are the two main types of IP addresses?
IPv4 and IPv6.
True or False: An IPv4 address consists of 128 bits.
False.
Fill in the blank: An IPv4 address is expressed in ______ format.
dotted-decimal
What is the range of a Class C IPv4 address?
192.0.0.0 to 223.255.255.255.
What is the default subnet mask for a Class A network?
255.0.0.0.
Which class of IP address is used for multicast?
Class D.
What is CIDR?
Classless Inter-Domain Routing.
True or False: Subnetting allows for more efficient use of IP addresses.
True.
What does a subnet mask do?
It defines the network and host portions of an IP address.
What is the formula to calculate the number of subnets?
2^n, where n is the number of bits borrowed for subnetting.
What is the first address in a subnet called?
Network address.
What is the last address in a subnet called?
Broadcast address.
Fill in the blank: The subnet mask for a /24 network is ______.
255.255.255.0
What is the maximum number of hosts in a /30 subnet?
2.
What is an IPv6 address expressed in?
Hexadecimal format.
True or False: IPv6 addresses are longer than IPv4 addresses.
True.
What is the purpose of NAT?
To allow multiple devices on a local network to share a single public IP address.
What is the loopback address in IPv4?
127.0.0.1.
What is the private IP address range for Class B?
172.16.0.0 to 172.31.255.255.
What does the ‘host’ portion of an IP address indicate?
The specific device within a network.
What is the significance of the first and last IP addresses in a subnet?
The first is the network address and the last is the broadcast address.
What does a /16 subnet mask mean?
The first 16 bits are used for the network part of the address.
How many usable host addresses are in a /22 subnet?
1022.
What is the address range for a Class A private network?
10.0.0.0 to 10.255.255.255.
What is the main benefit of subnetting?
Improved network management and security.
Which protocol is commonly used for automatic IP address assignment?
DHCP.
