Networking Chapter 4

What is the default subnet mask for the 198.25.4.129 address?

255.255.255.0

What is the CIDR notation used for the 255.255.255.0 subnet mask?

/24

What is the binary equivalent of 180?

1011 0100

What would the AND result be for 1110 and 1100?

1100

What is the binary equivalent of 255.255.0.0?

11111111.11111111.00000000.00000000

How many Class A networks are defined within IPv4?

127

What is the loop back address for IPv4 used in Windows?

127.0.0.1

An IPv6 address contains how many bits?

128

Which of the following is not a private IP address range? a) 10.0.0.0 to 10.255.255.255 b) 172.16.0.0 172.31.255.255 c) 192.168.0.0 to 192.168.255.255 d) 128.0.0.0 to 128.255.255.255

128.0.0.0 to 128.255.255.255

Which of the following addresses can be routed over the Internet?

132.16.3.24

You have the following four network addresses: 192.168.4.0 192.168.4.1 192.168.4.2 192.168.4.3 If you supernet these addresses, what would the network address be for all four?

192.168.4.0 /26 Because the default CIDR notation for these networks is /24, and you are combining four networks notated with two bits (four different combinations), it gives you a total of /26.

How many Class C networks are specified within IPv4?

2,097,152

How many hosts does a Class C network support?

2,097,152

What is the address range used for Class D, multicasting?

224.0.0.0 to 239.255.255.255

What is the default subnet mask for a Class B network?

255.255.0.0

What is the default subnet mask for the 160.32.63.67 address?

255.255.0.0

What is the subnet mask for a /26 CIDR notation?

255.255.255.192 CIDR stands for Classless Inter-Domain Routing. This standard notation came about as a form of shorthand to indicate what portion of a given IP address is to be used for network ID and what part is to be used for host ID. The /26 indicates 11111111.11111111.11111111.11000000, which is equivalent to 255.255.255.192.

You have a class C network that needs to support 14 subnets. What would the subnet mask be?

255.255.255.240 To support 14 hosts, you need 4 bits, which will support up to 14 subnets. Therefore, the mask would change from 255.255.255.0 to 255.255.255.240.

Which is not a valid ip adress

255.255.255.255

Which of the following is a broadcast address?

255.255.255.255 The IP address 255.255.255.255 indicates that the packet is to be broadcast to every computer on the segment.`

You have four networks combined with three routers in series. If you are on the first network and want to send a packet to the fourth network, how many hops would it travel?

3 Each time a computer or network device hands off the data frame to the next computer or network device down the line, it is called a hop.

An IPv4 address contains how many bits?

32

Approximately how many addresses does IPv4 support?

4 billion

How many hosts does a Class B network support?

65,536

What hexadecimal character represents the decimal value of 10?

A Hexadecimal numbers are based on 16 digits. When you reach 9, the next digit is A, which is equivalent to decimal number 10.

What logical truth table is used to isolate the network address from IP address using the subnet mask?

ANDing

what is APIPA

Automatic Private Internet Protocol Addressing

What is 1011 equivalent to in hexadecimal?

B

Traditional IP networks were divided into a Class A, Class B, and Class C networks. What do you call this type of addressing?

Classful IP

CIDR

Classless Inter-Domain Routing

What network service automatically assigns IP addresses to hosts?

DHCP The Dynamic Host Configuration Protocol (DHCP) was developed to allow IP addresses to be assigned dynamically without requiring constant input from the network administrator.

What is DHCP?

Dynamic Host Configuration Protocol

What is the hexadecimal equivalent of 255?

FF

Which protocol is used on the Internet to provide addressing?

IP The most commonly used protocol suite for networking is TCP/IP. A protocol suite is a group of protocols designed to work together to carry out all functions needed for data to be communicated across a network. The protocol in the TCP/IP suite responsible for finding the best path to a destination computer and addressing is the Internet Protocol (IP).

______ is the oldest and most widely used IP protocol.

IPv4

You see the following address: 172.33.55.128 What type of address is this?

IPv4 address

______ so far is the newest and least widely adopted IP protocol.

IPv6

What 48-bit-long physical address is used to identify a network device?

MAC address

You see the following address: 91-FC-5D-D9-A3-B0 What type of address is this?

MAC address

Your system is configured to receive DHCP addresses. It is assigned an address of 169.254.34.7. What type address is this?

Microsoft Automatic Private IP Addressing

What technology is used for multiple private addresses to access the Internet through a single public address?

NAT

What do you call it when you use NAT to hide your private addresses from the Internet?

Network masquerading

Which type of NAT translates both IP address and port number?

PAT PAT (Port Address Translation) is what NAT uses to keep track of which device asked for which piece of information. There is a table found in a device that is using PAT that is used to keep track of public and private addresses so that data can be routed accordingly once it is received back at the network.

What do you call an IP address that you assign manually?

Static address

What do you call taking an IP address range and breaking it into smaller pieces?

Subnetting

What process combines several small subnets to form a larger network?

Supernetting

What do you call the numbering system that is based on 0s and 1s?

binary

What type of addressing sends packets to all computers within a network segment?

broadcast Whereas unicast communication goes just from one computer to another, broadcast communication goes from one computer to all available computers on the network.

When you send a packet to a host in a remote network, the packet is forwarded to the ___________.

default gateway

MAC addresses are considered physical addresses and IP addresses are considered __________ addresses.

logical

What type of addressing sends a single packet to multiple computers?

multicasting Multicast is kind of a compromise between unicast and broadcast. Multicast communications are used to send packets to multiple computers at one time, but not to all computers on the network.

When you view an IPv4 address, the address is divided into _________.

octets The logical address used in IPv4 is 32 bits long, and those bits are broken into four groups of octets, each containing 8 bits.

What is the first half of a MAC address called?

organizationally unique identifier Companies can be assigned multiple 24-bit addresses for the manufacturing portion of the network devices they build. These first 24 bits are called the organizationally unique identifier.

What is used to determine the network portion of an IP address?

subnet mask

What type of addressing sends packets to a single host?

unicast Unicast refers to a computer sending a packet to only one computer at a time. In this case, the source computer sends a unicast packet only to the computer that the packet is intended for. Most network traffic uses this sort of communication for normal network activity.