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5 IPv4 Addressing Fundamentals Free Online FlashCards

Study 5 IPv4 Addressing Fundamentals with 12 free online flashcards. Review key terms, definitions, and concepts with this interactive flashcard deck.

12 cards
01
Front

How is an IPv4 address structured?

Back

An IPv4 address is a 32-bit number usually written as four decimal octets separated by periods.

02
Front

How does a subnet mask distinguish network and host bits?

Back

Mask bits set to 1 mark the network portion; bits set to 0 mark the host portion.

03
Front

Which three IPv4 blocks are reserved for private networks?

Back

The private IPv4 blocks are 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16.

04
Front

How does a host choose between direct delivery and its default gateway?

Back

A host sends traffic directly to a destination on its local subnet. If the destination is outside that subnet and no more specific route applies, it sends traffic to its default gateway.

05
Front

What values can an IPv4 octet take?

Back

Each octet ranges from 0 to 255.

06
Front

What does an IPv4 address identify?

Back

It identifies an interface on an IP network, not necessarily an entire device; one device can have multiple interfaces.

07
Front

What does the IPv4 prefix /24 represent?

Back

A /24 prefix means 24 network bits and corresponds to the subnet mask 255.255.255.0.

08
Front

For 192.168.1.34/24, which part is the network portion?

Back

The first three octets are the network portion, and the final 8 bits are the host portion. Its subnet is 192.168.1.0/24.

09
Front

What are the typical address roles in 192.168.1.0/24?

Back

On a typical LAN, .0 is the network address, .255 is the directed broadcast address, and .1 through .254 are available for interfaces.

10
Front

How does a /26 divide a /24?

Back

A /26 mask is 255.255.255.192 and divides a /24 into four smaller subnets.

11
Front

Why are private IPv4 addresses not routed across the public Internet?

Back

Private addresses are not globally unique, so they are not routed across the public Internet. Different networks may reuse them.

12
Front

How can devices with private IPv4 addresses access the Internet?

Back

A router commonly uses network address translation (NAT) to provide Internet access to devices using private addresses.