Network + Chapter 6

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

0-255

What is the binary equivalent of the decimal value 97?

01100001

Which IP address is a private IP address?

10.164.19.5

What is the binary equivalent of the decimal value 151?

10010111

If you borrow 4 bits in a class C network, how many usable hosts will be on each subnet?

14

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

143

What is the first usable host address on the network 192.168.5.32 /28?

192.168.5.33

What is the decimal equivalent of the binary value 11010101?

213

What is the formula to calculate the number of hosts on a subnet?

2^h - 2, where h represents the number of host bits remaining.

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

2^n, where n is the number of bits you add to the subnet mask.

How many binary digits are in an IPv4 address?

32

How long is a subnet mask?

32 bits

How many subnets can you create if you borrow 3 bits in a class C network?

8

Which port do HTTP Web servers use?

80

Which of the following is a valid host address? a) 200.50.64.66 /26 b) 200.50.96.95 /27 c) 200.50.32.32 /27 d) 200.50.50.255 /24

A

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 retired and not available for use. Class E is for government use only. Class E is considered to be experimental. Class E is for private and special addresses.

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)

Which tool automatically assigns an IP address whenever a computer connects to the network?

DHCP

What is the universal MAC address for broadcast?

FF-FF-FF-FF-FF-FF

The part of the IP address that is the same for all computers on a network is called the host ID.

False.

When you want to be positive that the data moving between two systems gets there in good order, use a connectionless application.

False. Connectionless protocols like UDP don't contain any checksums or other mechanism to verify all the frames arrived in good condition.

User Datagram Protocol (UDP) is a connection-oriented protocol.

False. TCP is an example of a connection-oriented protocol. UDP is connectionless.

The Internet Protocol (IP) works at the Link layer.

False. The internet protocol works at the internet layer.

When a computer gives itself an Automatic Private IP Address (APIPA), it also includes a valid default gateway address.

False. Unfortunately, APIPA cannot issue a default gateway, so you'll never get on the Internet using APIPA.

Which protocol uses TCP as its transport layer protocol?

HTTP

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

Multicast

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

Network

IANA has grown dramatically and now oversees five __________ that parcel out IP addresses to large ISPs and major corporations.

Regional Internet Registries (RIRs)

Which protocol is connection-oriented?

TCP

What is the de facto protocol suite of the Internet?

TCP/IP

What network protocol do Apple systems use today?

TCP/IP

198.192.100.3 is a public IP address?

True

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

True

A very early protocol called Bootstrap Protocol (BOOTP) preceded DHCP in providing dynamic IP addressing.

True

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

True

Subnet masks are always 32 binary digits long.

True

Systems that use only static IP addressing can never have DHCP problems.

True

When a DHCP client boots up, it automatically sends out a special DHCP Discover message using the broadcast address.

True

Domain Name System (DNS) uses the User Datagram Protocol (UDP).

True.

The first binary octet of a Class C IP address always begins with 110 (110xxxxx).

True.

Transmission Control Protocol (TCP) chops up data into segments.

True.

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

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

first three

No individual computer can have an IP address that ends with 0 because that is reserved for the ___________________.

network ID

What command can you use to tell a device to send packets to itself?

ping 127.0.0.1

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

ping 127.0.0.1