Configure IPv4 and IPv6 Addressing (Lesson 4)

If a host is configured with the IP address 10.0.10.22 and mask 255.255.255.192, what is the broadcast address of the subnet?

10.0.10.63. (Convert the IP address to binary (00001010 00000000 0000101000010110), then work out the number of bits in the mask (26). Change the remaining host bits (6) to 1s and convert back to dotted decimal.)

If the IP address 10.0.10.22 were used with an /18 mask, how many subnets and hosts per subnet would be available?

1024 subnets each with 16,382 hosts. (From the default mask, 10 bits are allocated to the subnet ID and 14 remain as host bits.)

What are the first four octets of the IP address for loopback?

127.0.0.1

How many bits are in an IPv6 address?

128

What is the decimal for the given subnet binary value: 10000000

128

What do APIPA addresses start with?

169.254

What is the decimal for the given subnet binary value: 11000000

192

What is the decimal for the given subnet binary value: 11100000

224

What is the decimal for the given subnet binary value: 11110000

240

Convert binary value 11110010 to decimal

242

What is the decimal for the given subnet binary value: 11111000

248

What is the decimal for the given subnet binary value: 11111100

252

What is the decimal for the given subnet binary value: 11111110

254

What is the decimal for the given subnet binary value: 11111111

255

What is the dotted decimal representation of an 8-bit netmask?

255.0.0.0

What is the dotted decimal representation of an 18-bit netmask?

255.255.192.0

What is the formula for the number of hosts per subnet?

2^n-2 (where n is the number of bits allocated for the host ID)

How many bits are in an IPv4 address?

32

A host is configured with the IP address 10.0.10.22 and subnet mask 255.255.255.192. How many hosts per subnet would this addressing scheme support?

62 (Either subtract the least significant octet from 256, then subtract 2 for the network and broadcast addresses, or having worked out that there are 6 host bits, calculate (26)-2)

A limited IPv4-to-IPv6 transition mechanism that allows for encapsulation of IPv6 packets in IPv4 packets transmitted over IPv4 networks is known as?

6to4

A host has an address of 169.254.101.201. What can an administrator infer from this address? A) The host did not receive a response to a DHCPDISCOVER broadcast. B) The network mask is 255.255.255.0. C) The host is configured with a static Internet Protocol (IP) address. D) The address is leased and the host must release the Internet Protocol (IP) after a specific period of time.

A

What does the "Length" IP header field indicate? A) Size of the header and total packet size B) What is encapsulated in the packet so that the receiving host knows how to process it C) Whether the IP datagram has been split between multiple packets for transport over the underlying Data Link Protocol D) Which IP version is being used

A

Which choice is not a valid representation of the IPv6 address: A) 2001:C2A:0000:0000:BB29:0000:3F00:A5B6? B) 2001:C2A::BB29::3F00:A5B6 C) 2001:0C2A:0000:0000:BB29::3F00:A5B6 D) 2001:0C2A::BB29:0000:3F00:A5B6 E) 2001:C2A:0000:0000:BB29:0000:3F00:A5B6

A

Which of the following answers refers to a permanent assignment of an IP address? A) Static IP address B) Private IP address C) Dynamic IP address D) Public IP address

A

Which of the following enables automatic configuration of an IPv6 address? A) EUI-64 B) UEFI C) APIPA D) MAC-48

A

Which of the following statements accurately describes Internet Protocol (IP)? A) Internet Protocol (IP) is connectionless. B) Internet Protocol (IP) works at the Data layer. C) Internet Protocol (IP) is reliable. D) Internet Protocol (IP) provides guaranteed delivery.

A

Analyze the process of subnetting. Determine why an administrator may find subnetting beneficial for a network. (Select two) A) To divide a network into logically distinct zones for security B) A network has a large number of hosts on the same Internet Protocol (IP) network C) A network uses the same physical and data link technologies throughout D) An organization has one Local Area Network (LAN) without a Wide Area Network (WAN)

A, B

Which of the following IP addressing rules is true? (Choose two.) a) The host ID must be unique on the network b) Network and host IDs cannot be all zeroes c) A network ID can be any number d) A network ID can be 255.

A, B

A host has an Internet Protocol (IP) address of 172.20.152.104. What information does this IP address provide? (Select two) A) It is a private address. B) It is a public address. C) It is a Class B address. D) It is a Class C address.

A, C

What two methods can an organization use to facilitate Internet access for hosts configured with private addresses? A) NAT B) Proxy server with a private IP address C) DHCP D) Proxy server with a public IP address

A, D

Which of the answers listed below refer to the characteristic features of the 10.0.0.0 - 10.255.255.255 (10.0.0.0/8) IPv4 address space? (Select 2 answers) A) Class A range B) Public IP address range C) Class B range D) Non-routable (private) IP address range E) Class C range

A, D

Which of the following are Class C IP addresses? (Choose four.) a) 195.243.67.51 b) 165.247.220.100 c) 190.234.24.6 d) 11001101 01110100 00000100 00101110 e) 11001111 10000001 01111110 10010010 f) 213.54.53.52 g) 233.168.24.6

A, D, E, and F

An IPv6 link-local address is an equivalent of IPv4's?

APIPA address

A host has an Internet Protocol (IP) address of 129.153.138.83. Evaluate classful addressing standards and determine the class of the host's network. A) Class A B) Class B C) Class C D) Class D

B

A packet is sent from Host A to Host B. The protocol field contains ESP/50. Analyze the protocols that run directly on Internet Protocol (IP). What information does the packet contain? A) Information which routers use to exchange information about paths B) Information in an encrypted form of Internet Protocol Security (IPSec) C) Information to tunnel packets across an intermediate network D) Information for status messaging

B

What does the "Protocol" IP header field indicate? A) Size of the header and total packet size B) What is encapsulated in the packet so that the receiving host knows how to process it C) Whether the IP datagram has been split between multiple packets for transport over the underlying Data Link Protocol D) Which IP version is being used

B

What is the name of a solution that increases the efficiency of IP address space management by allowing network administrators to divide networks into subnets of different sizes? A) DNAT B) VLSM C) MPLS D) VLAN

B

What technology or technologies can you use to isolate broadcast domains? A) DHCP B) VLANs C) Port mirroring D) Multicasting

B

Which of the answers listed below refers to an IPv6 link-local address? A) 2002::/16 B) FE80::/10 C) 2001::/32 D) ::1/128

B

Which of the terms listed below refers to permanent IP address assignment from a DHCP server? A) Scope B) Reservation C) DHCP relay D) Lease

B

Which statement is not true of IPv6 addresses? A) EUI-64 can be traced back to the source computer B) IPv4 and IPv6 are automatically translated back and forth as required C) Outbound IPv6 addresses are randomized by the operating system D) There are no private IPv6 addresses

B

Differentiate between the characteristics of Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6). (Select two) A) Internet Protocol version 6 (IPv6) and Internet Protocol version 4 (IPv4) both only use values 0-9. B) Internet Protocol version 6 (IPv6) uses hexadecimal numbering while Internet Protocol version 4 (IPv4) uses decimal numbering. C) Internet Protocol version 6 (IPv6) uses an Options field in the header while Internet Protocol version 4 (IPv4) uses extension headers. D) Internet Protocol version 6 (IPv6) is a 128-bit addressing scheme while Internet Protocol version 4 (IPv4) is a 32-bit addressing scheme.

B, D

Which of the following answers refer to IPv6 loopback addresses? (Select 2 answers) A) 127.0.0.1 B) 0:0:0:0:0:0:0:1 C) 169.254/16 D) ::1 E) FE80::/10

B, D

Compare the features of reserved address ranges and determine the purpose of Internet Protocol (IP) address 169.254.0.0. A) Clients use it as a source address for a Dynamic Host Configuration Protocol (DHCP) lease. B) Hosts use it to broadcast to the local network. C) Hosts use it for automatic private addressing. D) It is set aside for use in documentation and examples.

C

What do the "ID, Flags, and Fragment Offset" IP header fields indicate? A) Size of the header and total packet size B) What is encapsulated in the packet so that the receiving host knows how to process it C) Whether the IP datagram has been split between multiple packets for transport over the underlying Data Link Protocol D) Which IP version is being used

C

Which TCP/IP parameters must be defined for a host to be able tocommunicate with hosts on a remote network? A) IP Address B) IP Address and Subnet Mask C) IP Address, Subnet Mask, and Default Gateway D) IP Address, Subnet Mask, Default Gateway, and MAC Address

C

Which of the following solutions alleviates the problem of the depleting IPv4 address space by allowing multiple hosts on the same private LAN to share a single public IP address? A) DNS B) APIPA C) NAT D) DHCP

C

Which of the solutions listed below hides the internal IP addresses by modifying IP address information in IP packet headers while in transit across a traffic routing device? A) QoS B) DHCP C) NAT D) DNS

C

Which statement is NOT true regarding subnet masks? A) subnets makes are used by a computer to determine the network id B) subnet makes are never sent out of a host C) subnet masks are sent out as one of the fields in an IP packet D) subnet masks have contagious 1s at the leftmost followed by contiguous 0s

C (subnet masks are sent out as one of the fields in an IP packet)

Which of the following answers refer to the 172.16.0.0 - 172.31.255.255 (172.16.0.0/12) IPv4 address space? (Select 2 answers) A) Class A range B) Public IP address range C) Class B range D) Non-routable (private) IP address range E) Class C range

C, D

What class is an IP address if the 1st octet is 0-126?

Class A

What class is an IP address if the 1st octet is 127-191?

Class B

What class is an IP address if the 1st octet is 192-223?

Class C

What class is an IP address if the 1st octet is 224-239?

Class D

What class is an IP address if the 1st octet is 239-255?

Class E

A network protocol providing an alternative solution to the manual allocation of IP addresses is known as: A) DNS B) SNMP C) NAT D) DHCP

D

A system administrator enters ipconfig /all into a command prompt. What will be a result of this action? A) the command will force a Dynamic Host Configuration Protocol (DHCP) to renew the lease. B) the command will release the Internet Protocol (IP) address obtained by the Dynamic Host Configuration Protocol (DHCP). C) the command will register the host with a Domain Name System (DNS) server. D) the command will allow the administrator to confirm if the Dynamic Host Configuration Protocol (DHCP) is enabled.

D

How does a rogue DHCP server manifest? A) Computer cannot connect to the Internet B) Webpages do not have valid certificates C) Computer cannot start D) Computer is running on an IP address different from its usual IP address

D

How many bits is the Network ID in the Internet Protocol (IPv6) global unicast address format? A) 3 B) 16 C) 64 D) 45

D

The assignment of APIPA address typically indicates a problem related to? A) SNMP B) DNS C) SMTP D) DHCP

D

What allows to determine which network segment an IP address belongs to? A) Physical address B) Dynamic Host Configuration Protocol (DHCP) C) Address Resolution Protocol (ARP) D) Subnet mask

D

What does the "Version" IP header field indicate? A) Size of the header and total packet size B) What is encapsulated in the packet so that the receiving host knows how to process it C) Whether the IP datagram has been split between multiple packets for transport over the underlying Data Link Protocol D) Which IP version is being used

D

Which of the answers listed below refers to a method for managing a network's IP address space? A) WMS B) SIEM C) UTM D) IPAM

D

Which of the following answers lists a valid address of FE80:00A7:0000:0000:02AA:0000:4C00:FE9A after compression? A) FE80:00A7::2AA:0:4C:FE9A B) FE80:A7::2AA::4C00:FE9A C) FE80:00A7::2AA:0:4C00:FE9A D) FE80:A7::2AA:0:4C00:FE9A

D

Which of the following answers refers to an IPv4 address range reserved for future use? A) 10.0.0.0 - 10.255.255.255 (10.0.0.0/8) B) 172.16.0.0 - 172.31.255.255 (172.16.0.0/12) C) 192.168.0.0 - 192.168.255.255 (192.0.0.0/24) D) 240.0.0.0 - 255.255.255.254 (240.0.0.0/4)

D

Which of the following is not a characteristic of an IPv6 address? A) Broken up into eight groups B) Written with hexadecimal characters C) 128 bits D) Groups are separated by dashes

D

Which of the following is not a "special" IP address? A) 192.168.70.70 B) 10.255.1.1 C) 127.0.0.1 D) 169.253.4.185

D (169.253.4.185)

Which service does not automatically assign an IP address to a host? A) APIPA B) DHCP C) bootp D)Static

D (static)

What are the characteristic features of the 192.168.0.0 - 192.168.255.255 (192.0.0.0/24) IPv4 address space? (Select 2 answers) A) Class A range B) Public IP address range C) Class B range D) Non-routable (private) IP address range E) Class C range

D, E

IPv4 addresses are expressed with the use of?

Decimal numbers

Which of the following answers refer to the IPv4 multicast address block? (Select 2 answers) A) 128 - 191 B) Class B C) 192 - 223 D) Class C E) 224 - 239 F) Class D

E, F

True or False? The IP address 172.24.0.1 is routable over the Internet.

False; 172.16.0.0—172.31.255.255 is the Class B private address range.

IPv6 addresses are expressed with the use of?

Hexadecimal numbers

What is the significance of the address 127.0.0.1?

Loopback address

What is a Class D address used for?

Multicasting

On which OSI layer does IP operate?

Network Layer (3)

An IPv4-to-IPv6 transition mechanism with native support for Network Address Translation (NAT) is called?

Teredo

A company has four networks, using the addresses 192.168.0.0/24,192.168.1.0/24, 192.168.2.0/24, and 192.168.3.0/24. What network prefix and subnet mask can be used to summarize a supernet route to these networks?

The network prefix is /22 and the mask is 255.255.252.0.

A type of network traffic intended for a single host identified by a unique IP address is referred to as?

Unicast

Given an 18-bit netmask, are the IP addresses 172.16.1.10 and 172.16.54.10 on the same network?

Yes (convert the IP addresses to binary, and you will see that the first 18 binary digits in each address are the same (10101100 00011110 00))

What are the three categories of private IP addresses? A) any IP address that starts with a 10 B) any IP address between 172.16-172.32 C) any IP address that starts with 192.154 D) any IP address that starts with 192.168

a, b, d

What does the "TTL" IP header field indicate?

"Time to Live"; the number of seconds a packets can stay on the network before being discarded; interpreted as the maximum "hop" count between routers

True or False: The term "Dual-stack IP" refers to a solution that relies on implementing both IPv4 and IPv6 protocol stacks on various network devices to facilitate seamless migration from IPv4 to IPv6.

True

True or False? A router will not forward a packet when the TTL field is 0.

True

True or False? VLSM means using more than one mask to subnet an IP network.

True

An organization wants each of five buildings to be on its own subnet. Each campus will need a minimum of 25 IP addresses. The organization has the Class C network address 217.105. 2.0 assigned to it. Using CIDR, what subnet mask will the minimum number of subnetworks with the maximum number of hosts per network that will meet the requirements of the organization?

/27

A company has subnetted their Class C network address into four subnets with a /26 subnet mask. What are the addresses of the four subnets?

0, 64, 128, 192

Convert decimal 72 into binary

01001000

True of false: ARP resolves MAC address from an IP address

True

True or False: An IP address that doesn't correspond to any actual physical network interface is called a virtual IP address (VIP/VIPA).

True

True or False: Dynamic Host Configuration Protocol version 6 (DHCPv6) is the IPv6 equivalent of the Dynamic Host Configuration Protocol (DHCP) for IPv4.

True

True or False: One of the features of the Dynamic Host Configuration Protocol (DHCP) is the capability for static allocation of an IP address based on the IP-to-MAC address mapping.

True

True or False: The purpose of IPv6 tunneling is to pass IPv6 packets across an IPv4 network, and encapsulate an IPv6 packet inside an IPv4 packet.

True