Modules 11 - 13: IP Addressing Exam

IPv4 TEST-NET address range

192.0.2.0/24

What is the most compressed representation of the IPv6 address 2001:0000:0000:abcd:0000:0000:0000:0001?

2001:0:0:abcd::1

Given IPv6 address prefix 2001:db8::/48, what will be the last subnet that is created if the subnet prefix is changed to /52?

2001:db8:0:f000::/52

What is the prefix length notation for the subnet mask 255.255.255.224?

/27

What is the usable number of host IP addresses on a network that has a /26 mask?

26

How many bits must be borrowed from the host portion of an address to accommodate a router with five connected networks?

3

How many usable IP addresses are available on the 192.168.1.0/27 network?

30

How many host addresses are available on the 192.168.10.128/26 network?

62

How many valid host addresses are available on an IPv4 subnet that is configured with a /26 mask?

62

Which IPv6 network prefix is only intended for local links and can not be routed?

FE80::/10

What field content is used by ICMPv6 to determine that a packet has expired?

Hop Limit field

PC1 192.168.1.1 running tracert to 10.1.0.2 has last valid IP address of 192.168.1.254. Which device?

R1, the default gateway for that LAN.

Which service provides dynamic global IPv6 addressing to end devices without using a server that keeps a record of available IPv6 addresses?

SLAAC

192.0.2.123 type of address?

TEST-NET address

A host is transmitting a multicast. Which host or hosts will receive it?

a specially defined group of hosts

A user issues a ping 192.135.250.103 command and receives a response that includes a code of 1. What does this code represent?

host unreachable

::1

loopback

What message is sent by a host to check the uniqueness of an IPv6 address before using that address?

neighbor solicitation

Which command can be used to test connectivity between two devices using echo request and echo reply messages?

ping

A user issues a ping fe80:65ab:dcc1::100 command and receives a response that includes a code of 4. What does this code represent?

port unreachable

172.19.20.5 type of address?

private address

IPv4 private address ranges

10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16

IPv4 link-local address block

169.254.0.0/16

A network administrator is variably subnetting a network. The smallest subnet has a mask of 255.255.255.224. How many usable host addresses will this subnet provide?​

30

A user issues a ping 2001:db8:FACE:39::10 command and receives a response that includes a code of 3. What does this code represent?

address unreachable

How many host addresses are available on the network 172.16.128.0 with a subnet mask of 255.255.252.0?

1022

A user issues a ping fe80:65ab:dcc1::100 command and receives a response that includes a code of 3. What does this code represent?

address unreachable

What is the prefix for the host address 2001:DB8:BC15:A:12AB::1/64?

2001:DB8:BC15:A

Which is the compressed format of the IPv6 address 2001:0db8:0000:0000:0ab8:0001:0000:1000?

2001:db8::ab8:1:0:1000

Which protocol is used by IPv4 and IPv6 to provide error messaging?

ICMP

Which protocol is used by the traceroute command to send and receive echo-requests and echo-replies?

ICMP

Which protocol provides feedback from the destination host to the source host about errors in packet delivery?

ICMP

Which statement describes a characteristic of the traceroute utility?

It identifies the routers in the path from a source host to a destination host.

An IPv6 enabled device sends a data packet with the destination address of FF02::1. What is the target of this packet?​

all IPv6 enabled devices on the local link​ or network

A user issues a ping 2001:db8:FACE:39::10 command and receives a response that includes a code of 2. What does this code represent?

beyond scope of the source address

Which two things can be determined by using the ping command? (Choose two.)

the average time it takes a packet to reach the destination and for the response to return to the source and the destination device is reachable through the network

What is the purpose of ICMP messages?

to provide feedback of IP packet transmissions

Considering the addresses already used (10.16.10.0/26 and 10.16.10.192/28) and having to remain within the 10.16.10.0/24 network range, which subnet address could be assigned to the network containing 25 hosts?

10.16.10.64/27

If a network device has a mask of /28, how many IP addresses are available for hosts on this network?

14

Your organization is issued the IPv6 prefix of 2001:0000:130F::/48 by your service provider. With this prefix, how many bits are available for your organization to create subnetworks if interface ID bits are not borrowed?

16

2001:db8:1234:xxxy::/64 where y represents the subnet portion, how many subnets?

16, Because only one hexadecimal character is used to represent the subnet, that one character can represent 16 different values 0 through F.

Which subnet would include the address 192.168.1.96 as a usable host address?

192.168.1.64/26

What is the prefix associated with the IPv6 address 2001:CA48:D15:EA:CC44::1/64?

2001:CA48:D15:EA::/64

What is the subnet address for the IPv6 address 2001:D12:AA04:B5::1/64?

2001:D12:AA04:B5::/64​

What subnet mask is represented by the slash notation /20?

255.255.240.0

A site administrator has been told that a particular network at the site must accommodate 126 hosts. Which subnet mask would be used that contains the required number of host bits?

255.255.255.128

Which subnet mask would be used if exactly 4 host bits are available?

255.255.255.240

Which of these addresses is the shortest abbreviation for the IP address:3FFE:1044:0000:0000:00AB:0000:0000:0057?

3FFE:1044:0:0:AB::57

A network administrator subnets the 192.168.10.0/24 network into subnets with /26 masks. How many equal-sized subnets are created?

4

If a network device has a mask of /26, how many IP addresses are available for hosts on this network?

62

Dual-Stack, one of three methods that allow IPv6 and IPv4 to coexist

The IPv4 packets and IPv6 packets coexist in the same network.

Tunneling, one of three methods that allow IPv6 and IPv4 to coexist

The IPv6 packet is transported inside and IPv4 packet.

A high school in New York (school A) is using videoconferencing technology to establish student interactions with another high school (school B) in Russia. The videoconferencing is conducted between two end devices through the Internet. The network administrator of school A configures the end device with the IP address 209.165.201.10. The administrator sends a request for the IP address for the end device in school B and the response is 192.168.25.10. Neither school is using a VPN. The administrator knows immediately that this IP will not work. Why?

This is a private IP address

Which IPv6 prefix is reserved for communication between devices on the same link?

fe80::/10

Which is the compressed format of the IPv6 address fe80:0000:0000:0000:0220:0b3f:f0e0:0029?

fe80::220:b3f:f0e0:29

2001:DB8::BAF:3F57:FE94

global unicast

What does the IP address 172.17.4.250/24 represent?

host address

What type of IPv6 address is FE80::1?

loopback linklocal* multicast global unicast

What are two types of IPv6 unicast addresses? (Choose two.)

multicast loopback* link-local* anycast broadcast

Which two parts are components of an IPv4 address? (Choose two.)

network and host portions

A technician uses the ping 127.0.0.1 command. What is the technician testing?

the TCP/IP stack on a network host

Which ICMPv6 message is sent when the IPv6 hop limit field of a packet is decremented to zero and the packet cannot be forwarded?

time exceeded

What is the purpose of the subnet mask in conjunction with an IP address?

to determine the subnet to which the host belongs

Why does a Layer 3 device perform the ANDing process on a destination IP address and subnet mask?

to identify the network address of the destination network

What three blocks of addresses are defined by RFC 1918 for private network use? (Choose three.)

10.0.0.0/8 172.16.0.0/12 192.168.0.0/16

What is the interface ID of the IPv6 address 2001:DB8::1000:A9CD:47FF:FE57:FE94/64?

A9CD:47FF:FE57:FE94

A user calls to report that a PC cannot access the internet. The network technician asks the user to issue the command ping 127.0.0.1 in a command prompt window. The user reports that the result is four positive replies. What conclusion can be drawn based on this connectivity test?

The TCP/IP implementation is functional.

Which statement is true about variable-length subnet masking?

The size of each subnet may be different, depending on requirements.

What is a function of the tracert command that differs from the ping command when they are used on a workstation?

The tracert command shows the information of routers in the path.

A host is transmitting a broadcast. Which host or hosts will receive it?

all hosts in the same subnet

A message is sent to all hosts on a remote network. Which type of message is it?

directed broadcast

240.2.6.255 type of address?

experimental address

At a minimum, which address is required on IPv6-enabled interfaces?

link-local

What type of address is automatically assigned to an interface when IPv6 is enabled on that interface?

link-local

169.254.1.5 type of address?

link-local address

Which type of IPv6 address is not routable and used only for communication on a single subnet?

link-local address

A host is transmitting a unicast. Which host or hosts will receive it?

one specific host

Which utility uses the Internet Control Messaging Protocol (ICMP)?

ping

A user issues a ping 2001:db8:3040:114::88 command and receives a response that includes a code of 4. What does this code represent?

port unreachable

Which ICMP message is used by the traceroute utility during the process of finding the path between two end hosts?

time exceeded

Which address type is not supported in IPv6?

to broadcast

What is the minimum configuration for a router interface that is participating in IPv6 routing?

to have only a link-local IPv6 address

A user who is unable to connect to the file server contacts the help desk. The helpdesk technician asks the user to ping the IP address of the default gateway that is configured on the workstation. What is the purpose for this ping command?

to test that the host has the capability to reach hosts on other networks

A network administrator can successfully ping the server at www.cisco.com, but cannot ping the company web server located at an ISP in another city. Which tool or command would help identify the specific router where the packet was lost or delayed?

traceroute

A technician is troubleshooting a network where it is suspected that a defective node in the network path is causing packets to be dropped. The technician only has the IP address of the end point device and does not have any details of the intermediate devices. What command can the technician use to identify the faulty node?

tracert

2001:0DB8:BC15:00A0:0000:: 2001:0DB8:BC15:00A1:0000:: 2001:0DB8:BC15:00A2:0000:: ... 2001:0DB8:BC15:00AF:0000:: The prefix-length for the range of addresses is

/60 All the addresses have the part 2001:0DB8:BC15:00A in common. Each number or letter in the address represents 4 bits, so the prefix-length is /60.

What are three parts of an IPv6 global unicast address? (Choose three.)

1) a global routing prefix that is used to identify the network portion of the address that has been provided by an ISP* 2) a subnet ID that is used to identify networks inside of the local enterprise site 3) an interface ID that is used to identify the local host on the network

Which is the compressed format of the IPv6 address 2001:0db8:0000:0000:0000:a0b0:0008:0001?

2001:db8::a0b0:8:1

Which protocol supports Stateless Address Autoconfiguration (SLAAC) for dynamic assignment of IPv6 addresses to a host?

ICMPv6

What is indicated by a successful ping to the ::1 IPv6 address?

IP is properly installed on the host.

Translation, one of three methods that allow IPv6 and IPv4 to coexist

IPv6 packets are converted to IPv4 packets and vice versa.

Which type of IPv6 address refers to any unicast address that is assigned to multiple hosts?

anycast

A user issues a ping 2001:db8:FACE:39::10 command and receives a response that includes a code of 2 . What does this code represent?

beyond scope of the source address

A user issues a ping 10.10.14.67 command and receives a response that includes a code of 0. What does this code represent?

network unreachable

A user issues a ping 198.133.219.8 command and receives a response that includes a code of 0. What does this code represent?

network unreachable

IPv4 experimental address range

240.0.0.0 to 255.255.255.254

An administrator must send a message to everyone on the router A network. What is the broadcast address for network 172.16.16.0/22?

172.16.19.255

A company has a network address of 192.168.1.64 with a subnet mask of 255.255.255.192. The company wants to create two subnetworks that would contain 10 hosts and 18 hosts respectively. Which two networks would achieve that? (Choose two.)

192.168.1.16/28 192.168.1.64/27* 192.168.1.128/27 192.168.1.96/28* 192.168.1.192/28

Which three addresses are valid public addresses? (Choose three.)

198.133.219.17* 192.168.1.245 10.15.250.5 128.107.12.117* 172.31.1.25 64.104.78.227*

What is the valid most compressed format possible of the IPv6 address 2001:0DB8:0000:AB00:0000:0000:0000:1234?

2001:DB8:0:AB00::1234

Which is the compressed format of the IPv6 address 2002:0420:00c4:1008:0025:0190:0000:0990?

2002:420:c4:1008:25:190::990

Which is the compressed format of the IPv6 address 2002:0042:0010:c400:0000:0000:0000:0909?

2002:42:10:c400::909

Which address prefix range is reserved for IPv4 multicast?

224.0.0.0 - 239.255.255.255

Which subnet mask would be used if 5 host bits are available?

255.255.255.224

A network administrator has received the IPv6 prefix 2001:DB8::/48 for subnetting. Assuming the administrator does not subnet into the interface ID portion of the address space, how many subnets can the administrator create from the /48 prefix?

65536

ff02::1

All-nodes multicast address.

Which address is a valid IPv6 link-local unicast address?

FEC8:1::FFFF FD80::1:1234 FE80::1:4545:6578:ABC1* FE0A::100:7788:998 FFC90:5678:4251:FFFF

Which is the compressed format of the IPv6 address fe80:09ea:0000:2200:0000:0000:0fe0:0290?

fe80:9ea:0:2200::fe0:290

127.0.0.1 type of address?

looback address

ff02::1:ffae:f85f

solicited node multicast

An administrator wants to create four subnetworks from the network address 192.168.1.0/24. What is the network address and subnet mask of the second useable subnet?

subnetwork 192.168.1.64subnet mask 255.255.255.192

What source IP address does a router use by default when the traceroute command is issued?

the IP address of the outbound interface

What is used in the EUI-64 process to create an IPv6 interface ID on an IPv6 enabled interface?

the MAC address of the IPv6 enabled interface

A user executes a traceroute over IPv6. At what point would a router in the path to the destination device drop the packet?

when the value of the Hop Limit field reaches zero