Cyber 2 Module 4

How many bits are in an IPv4 address?

• 16

• 32

• 64

• 128

Answer explanation

It has 4 sets of 8-bit numbers, for a total of 32.

Which of the following is the newer version of IP addresses because the previous version's addresses have run out?

• IPv6

• IPv4

• IPv7

• IPv5

Answer explanation

IPv4 was able to support about 4.3 billion addresses. IPv6 has a total of 340,282,366,920,938,463,463,374,607,431,768,211,456. Yes, really.

What class is this IP address? 10.10.10.0

• A

• B

• C

• D

Answer explanation

The class is determined by the first octet. 1.0.0.0 to 127.0.0.0 all fall under Class A.

What type of IP addresses are manually assigned?

• Dynamic

• Static

Answer explanation

Dynamic addresses are assigned using DHCP. Static addresses have to be configured manually.

IP: 192.168.1.2

Subnet mask: 255.255.255.0

What class is the IP address?

• A

• B

• C

• D

Answer explanation

The first octet determines the class of an IP address. 192 - 223 addresses would be considered Class C.

An IP address is divided into what two parts?

• Physical and logical

• Network and subnet

• Network and host

• Physical and emotional

Answer explanation

The first part is known as the network portion, and the second is the host portion. The subnet mask also helps determine which part is which.

ARP stands for ________.

• Address Resolution Phase

• Address Resolution Protocol

• Address Recall Protocol

• ARP Resolution Protocol

What is the basic purpose of ARP?

• To convert MAC addresses to IP addresses

• To list all configured interfaces on a system

• To list the MAC name of a host machine

• To resolve IP addresses to MAC addresses

Answer explanation

ARP links a MAC address to an IP address. This is similar to knowing your friend's name, and then remembering the address where they live, so it's easier to visit them.

DNS maps human-readable domain names into computer-readable ________.

• IP addresses.

• domain names.

• servers.

• caches.

Answer explanation

DNS works like a phone book. You look up a person's name, and the phone book helps you find find an actual phone number you can call.

Which of these is an APIPA address?

• 169.254.0.1

• 192.168.1.1

• 10.0.0.3

• 255.255.255.0

Answer explanation

Automatic Private IP Addresses are not routable, and are issued when a DHCP server is not available, usually meaning something is wrong. They begin with 169.254.