IP Addressing C7

Which of the following is an invalid IP address for a host? 10.0.0.1 128.0.0.1 224.0.0.1 172.0.0.1

224.0.0.1

In a class C IP address, how long is the network address? 8 bits 16 bits 24 bits 32 bits

24 bits

Which statement regarding private IP addresses is most accurate? Private addresses cannot be used in intranets that require routing. Private addresses must be assigned by a registrar or ISP. A remote host across the Internet cannot ping your host if it has a private address Private addresses can only be used by a single administrative domain.

A remote host across the Internet cannot ping your host if it has a private address

Which of the following describes a broadcast address? All network bits are on (1s). All host bits are on (1s). All network bits are off (0s). All host bits are off (0s).

All host bits are on (1s).

What two statements about IPv4 and IPv6 addresses are true? An IPv6 address is 32 bits long, represented in hexadecimal. An IPv6 address is 128 bits long, represented in decimal. An IPv4 address is 32 bits long, represented in decimal. An IPv6 address is 128 bits long, represented in hexadecimal.

An IPv4 address is 32 bits long, represented in decimal. An IPv6 address is 128 bits long, represented in hexadecimal.

What is the term for the auto-configuration technology responsible for addresses that start with 169.254?

Automatic Private IP Addressing (APIPA) is the technology that results in hosts automatically configuring themselves with addresses that begin with 169.254.

Which of the following is a valid Class A address? 191.10.0.1 255.0.0.0 127.10.0.1 255.0.0.0 128.10.0.1 255.0.0.0 126.10.0.1 255.0.0.0

126.10.0.1 255.0.0.0

An IPv4 addresses uses 32 bits. How many bits is an IPv6 address? 64 128 192 255

128

Which of the following is a valid Class B address? 10.1.1.1 255.255.0.0 126.1.1.1 255.255.0.0 129.1.1.1 255.255.0.0 192.168.1.1 255.255.0.0

129.1.1.1 255.255.0.0

Which of the following is a valid IP address that can be used on the Internet (meaning the public addressing scheme)? 10.10.1.1 168.16.1.1 234.1.1.1 172.30.1.1

168.16.1.1

A host automatically configured with an address from which of the following ranges indicates an inability to contact a DHCP server? 169.254.0.X with a mask of 255.255.255.0 169.254.X.X with a mask of 255.255.0.0 169.254.X.X with a mask of 255.255.255.0 169.255.X.X with a mask of 255.255.0.0

169.254.X.X with a mask of 255.255.0.0

Which two of the following are private IP addresses? (Choose two.) 12.0.0.1 168.172.19.39 172.20.14.36 172.33.194.30 192.168.24.43

172.20.14.36 192.168.24.43

Which of the following addresses is not allowed on the Internet? 191.192.168.1 191.168.169.254 172.32.255.0 172.31.12.251

172.31.12.251

What is the Class C range of values for the first octet in decimal and in binary?

192-223, 110xxxxx.

Which of the following is a Class C network address? 10.10.10.0 255.255.255.0 127.0.0.1 255.255.255.0 128.0.0.0 255.255.0.0 192.255.254.0 255.255.255.0

192.255.254.0 255.255.255.0

What is the name for a 48-bit (6-byte) numerical address physically assigned to a network interface, such as a NIC?

A MAC address, sometimes called a hardware address or even a burned-in address

What predecessor to DHCP, on which DHCP is based, was used to assign a workstation its IP information and to supply it with a boot image?

BootP, the Bootstrap Protocol, used the same port numbers as DHCP but supplied more simplified information to a diskless workstation and allowed the workstation to download a remote boot image.

Which of the following is a Layer 2 broadcast? FF:FF:FF:EE:EE:EE FF:FF:FF:FF:FF:FF 255.255.255.255 255.0.0.0

FF:FF:FF:FF:FF:FF

What does the IP Properties selection Obtain an IP Address Automatically indicate?

Filling in the Obtain an IP Address Automatically radio button in IP Properties configures the host as a DHCP client

What is the 127.0.0.1 address used for?

Loopback or diagnostics

What effect will an inappropriate DHCP server have on hosts using static IP addresses?

None; DHCP servers cannot override statically assigned IP information.

Which of the following is true when describing a unicast address? Packets addressed to a unicast address are delivered to a single interface. These are your typical publicly routable addresses, just like regular publicly routable addresses in IPv4. These are like private addresses in IPv4 in that they are not meant to be routed. These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.

Packets addressed to a unicast address are delivered to a single interface.

Which of the following is true when describing a multicast address? Packets addressed to a unicast address from a multicast address are delivered to a single interface. Packets are delivered to all interfaces identified by the address. This is also called a one‐to‐many address. It identifies multiple interfaces and is delivered to only one address. This address can also be called one‐to‐one‐of‐many. These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.

Packets are delivered to all interfaces identified by the address. This is also called a one‐to‐many address.

What gives IPv6 the ability to reference more addresses than IPv4?

The fact that it has 128-bit (16-octet) addresses, compared to IPv4's 32-bit (4-octet) addresses

A host is rebooted and you view the IP address that it was assigned. The address is 169.123.13.34. Which of the following happened? The host received an APIPA address The host received a multicast address The host received a public address The host received a private address

The host received a public address

What is the valid range of values that may appear in an IPv4 octet? Give your answer in decimal as well as binary.

The range of values that an IPv4 octet can take on is 0 through 255 in decimal, which stems from the values 00000000 through 11111111 in binary.

Which of the following is true when describing an anycast address? Packets addressed to a unicast address from an anycast address are delivered to a single interface. Packets are delivered to all interfaces identified by the address. This is also called a one‐to‐many address. This address identifies multiple interfaces, and the anycast packet is delivered to only one address. This address can also be called one‐to‐one‐of‐many. These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.

This address identifies multiple interfaces, and the anycast packet is delivered to only one address. This address can also be called one‐to‐one‐of‐many.

What two statements about IPv6 addresses are true? Leading zeros are required. Two colons (::) are used to represent successive hexadecimal fields of zeros. Two colons (::) are used to separate fields. A single interface will have multiple IPv6 addresses of different types.

Two colons (::) are used to represent successive hexadecimal fields of zeros.

Name some of the benefits of IPv6 over IPv4.

more available addresses, simpler header, options for authentication and other security

You want to ping the loopback address of your local host. Which two addresses could you type? ping 127.0.0.1 ping 0.0.0.0 ping ::1 trace 0.0.::1

ping 127.0.0.1 ping ::1