CCNA1 v7 - Modules 11-13

Which address prefix range is reserved for IPv4 multicast?

224.0.0.0 - 239.255.255.255

What is the range for experimental addresses for IPv4 addresses?

240.0.0.0 - 255.255.255.254

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

/27

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

/60 *Each character represents 4 bits, there are 15 characters in the pre-fix (2001:0DB8:BC15:00A), therefore 15x4 = 60*

What are the four Destination Unreachable codes for ICMPv4?

0 - Net unreachable 1 - Host unreachable 2 - Protocol unreachable 3 - Port unreachable

What are the five Destination Unreachable codes for ICMPv6?

0 - No route to destination 1 - Communication is prohibited 2 - Beyond scope of the source address 3 - Address unreachable 4 - Port unreachable

What are the ranges of private IPv4 addresses?

10.0.0.0 - 10.255.255.255 172.16.0.0 - 172.31.255.255 192.168.0.0 - 192.168.255.255

What three blocks of addresses are defined by RFC 1918 for private network use?

10.0.0.0/8 172.16.0.0/12 192.168.0.0/16

What is the range for private addresses for IPv4 addresses?

10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 *10.0.0.0 - 10.255.255.255* *172.16.0.0 - 172.32.255.255* *192.168.0.0 - 192.168.255.255*

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

1022

What is the range for loopback addresses for IPv4 addresses?

127.0.0.0/8

A company is deploying an IPv6 addressing scheme for its network. The company design document indicates that the subnet portion of the IPv6 addresses is used for the new hierarchical network design, with the site subsection to represent multiple geographical sites of the company, the sub-site section to represent multiple campuses at each site, and the subnet section to indicate each network segment separated by routers. With such a scheme, what is the maximum number of subnets achieved per sub-site?

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

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

What is the range for TEST-NET addresses for IPv4 addresses?

192.0.2.0/24

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

2001:DB8:BC15:A *The prefix length tells you how long the prefix will be. Here, it is /64. Each character represents 4 bits, so 64/4 = 16. So the first 16 characters make up the prefix*

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

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

2001:db8::a0b0:8:1

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

2002:42:10:c400::909

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 5 host bits are available?

255.255.255.224

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

3

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

4

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

62

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

One specific host

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

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

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

All hosts in the same subnet

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

Anycast

Which of the following host addresses would be included in a subnetwork with the IP address 192.168.1.68? A) 192.168.1.32/27 B) 192.168.1.64/27 C) 192.168.1.96/27

B - Subnet 192.168.1.64/27 will have a valid host range from 192.168.1.65 - 192.168.1.94.

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

Considering the addresses already used 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? A) 10.16.10.160/26 B) 10.16.10.128/28 C) 10.16.10.64/27 D) 10.16.10.224/26 E) 10.16.10.240/27 F) 10.16.10.240/28

C

Which address is a valid IPv6 link-local unicast address? A) FEC8:1::FFFF B) FD80::1:1234 C) FE80::1:4545:6578:ABC1 D) FE0A::100:7788:998F E) FC90:5678:4251:FFFF

C

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

ICMP (Internet Control Message Protocol)

Which of these addresses is the shortest abbreviation for the IP address: A) 3FFE:1044:0000:0000:00AB:0000:0000:0057? B) 3FFE:1044::AB::57 C) 3FFE:1044::00AB::0057 D) 3FFE:1044:0:0:AB::57 E) 3FFE:1044:0:0:00AB::0057 F) 3FFE:1044:0000:0000:00AB::57 G) 3FFE:1044:0000:0000:00AB::0057

C

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

Directed broadcast

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

FE80::/10

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

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

ICMPv6

What type of IPv6 address is FE80::1?

Link-local

What are the types of IPv6 unicast addresses?

Loopback and link-local

Match the network with the correct IP address and prefix that will satisfy the usable host addressing requirements for each network based on the following IP addresses: 192.168.0.96/27 192.168.0.128/25 192.168.0.80/30 192.168.0.0/26

Network A - 192.168.0.128/25 Network B - 192.168.0.0/26 Network C - 192.168.0.96/27 Network D - 192.168.0.80/30

An administrator is trying to troubleshoot connectivity between PC1 and PC2 and uses the tracert command from PC1 to do it. Based on the displayed output, where should the administrator begin troubleshooting?

R1

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

SLAAC

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 = 192.168.1.64 Subnet 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 technician uses the ping 127.0.0.1 command. What is the technician testing?

The TCP/IP stack on a network host

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. *IP addresses starting with 192.168 are private IP addresses*

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 ICMP messages?

To provide feedback of IP packet transmissions

What three methods allow IPv6 and IPv4 to co-exist?

Translation - IPv6 packets are converted to IPv4 packets Tunneling - IPv6 packets are transported inside an IPv4 packets (vice versa) Dual-stack - IPv6 and IPv4 exist in the same network

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

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

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