ITM 280 CH 6

What is the range of decimal values in each of the four groups of an IPv4 address?

0 to 255

What is the binary equivalent of the decimal value 97?

01100001

By convention, most network administrators give the LAN-side NIC on the default gateway the lowest host address in the network, usually the host ID of ____________________.

1

Which IP address is a private IP address?

10.164.19.5

What is the binary equivalent of the decimal value 151?

10010111

Which port is used to receive e-mail messages from e-mail servers (IMAP4)?

143

Which IP address is a public IP address?

198.192.100.3

What is the decimal equivalent of the binary value 11010101?

213

Which IP address is valid for an individual host expressed in dotted decimal notation?

215.233.32.91

Which subnet mask is an example of classless subnetting?

255.255.240.0

Which formula would you use to arrive at the number of hosts on a subnet?

2x - 2, where x represents the number of zeroes in the subnet mask

Which formula would you use to calculate the number of new subnets?

2y, where y is the number of bits you add to the subnet mask

How many binary digits are in an IPv4 address?

32

Port numbers are values ranging from 1 to ____________________.

65,535

DHCP uses UDP ports ____________________ and ____________________.

67; 68

Which port do HTTP Web servers use?

80

____________________ is how a TCP/IP network figures out the MAC address based on the destination IP address.

Address Resolution Protocol (ARP)

Which statement about subnet masks is true?

All machines on the same network have the same subnet mask.

The Regional Internet Registry (RIR) for North America is called the ____________________.

American Registry for Internet Numbers (ARIN)

All DHCP clients are designed to generate a(n) ____________________ address automatically if they do not receive a response to a DHCP Discover message.

Automatic Private IP Addressing (APIPA)

Which method of sending a packet allows every computer on the LAN to hear the message?

Broadcast

If the first decimal value of an IP address is between 128 and 191, to what IP class does the network belong?

Class B

Which statement best describes a Class E address ID?

Class E is considered to be experimental.

Which task is performed by an ISP when it takes a block of addresses, subnets the block into multiple subnets, and then passes out the smaller individual subnets to customers?

Classless Inter-Domain Routing (CIDR)

DHCP stands for ____________________.

Dynamic Host Configuration Protocol

What is a better known name for dynamic IP addressing?

Dynamic Host Configuration Protocol (DHCP)

What is the universal MAC address for broadcast?

FF-FF-FF-FF-FF-FF

Which protocol uses TCP as its transport layer protocol?

HTTP

The network ID and the host ID are combined to make a system's ____________________.

IP address

For logical addressing to work, no two computers on the same network may have the same ____________________.

IP addresses

To make a DHCP relay-capable device work, you must give the relay the IP address of the real DHCP server, also known as the ____________________ address.

IP helper

The world is moving to a newer, longer type of IP address called ____________________.

IPv6 (Internet Protocol version 6)

The ____________________ was formed to track and disperse IP addresses to those who need them.

Internet Assigned Numbers Authority (IANA)

A MAC reservation assigns a specific ____________________ address to a specific MAC address.

Internet Protocol (IP)

Which method of sending a packet allows a single computer to send a packet to a group of interested computers?

Multicast

____________________ class blocks are used for one-to-many communication, such as in streaming video conferencing.

Multicast

To what layer of the OSI model does the TCP/IP model's Internet layer roughly correspond?

Network

____________________ addressing means typing all of the IP information into each of your hosts.

Static

What is the cornerstone of subnetting?

Subnet mask

What network protocol do Apple systems use today?

TCP/IP

Which protocol do Domain Name System (DNS) and Dynamic Host Configuration Protocol (DHCP) use?

UDP

Which method of sending a packet allows one computer to send a message directly to another user?

Unicast

To show Windows' current ARP cache, open a command line and type ____________________.

arp -a

Never try to subnet without first converting to ____________________.

binary

CompTIA and many technicians use the term ____________________ to describe the traditional class blocks.

classful

The router interface that connects a single LAN to the router is known as the ____________________.

default gateway

Linux can use the deprecated ifconfig command, but a better tool is ____________________.

dhclient

Having a server program running on a system that automatically passes out all the IP information to systems as they boot up on or connect to a network is called ____________________ addressing.

dynamic

A Class C network block uses the __________ octets to define only the network ID.

first three

To make IP addresses easier for humans to use, the 32-bit binary value is broken down into ____________________ groups of eight, separated by periods, or dots.

four

In Windows, the ____________________ command is used to try to reestablish a DHCP lease manually.

ipconfig /renew

The special address 127.0.0.1 is known as the ____________________ address.

loopback

Routers use ____________________ to determine network traffic.

network IDs

Most network folks represent subnet masks using special shorthand: a / character followed by a number equal to the number of ____________________ in the subnet mask.

ones

What command would you run from a Windows command line to test a computer's network stack?

ping 127.0.0.1

All routers block ____________________ IP addresses.

private

To organize individual LANs into a larger network, every TCP/IP LAN that wants to connect to another TCP/IP LAN must have a(n) ____________________ connection.

router

Built into a router is a(n) ____________________, the actual instructions that tell the router what to do with incoming packets and where to send them.

routing table

When a technician installs a range (or pool) of IP addresses, this is called a DHCP ____________________.

scope

A(n) ____________________ is nothing more than a string of ones followed by some number of zeroes, always totaling exactly 32 bits, typed into every TCP/IP host.

subnet mask