CCNA Modules 11-13
What is the prefix length notation for the subnet mask 255.255.255.224?
/27
How many host addresses are available on the network 172.16.128.0 with a subnet mask of 255.255.252.0?
1022
Which three addresses are valid public addresses? (Choose three.)
128.107.12.117 198.133.219.17 64.104.78.227
What three blocks of addresses are defined by RFC 1918 for private network use? (Choose three.)
172.16.0.0/12 10.0.0.0/8 192.168.0.0/16
Which subnet would include the address 192.168.1.96 as a usable host address?
192.168.1.64/26
What is the prefix for the host address 2001:DB8:BC15:A:12AB::1/64?
2001:DB8:BC15:A
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 address prefix range is reserved for IPv4 multicast?
224.0.0.0 - 239.255.255.255
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
Consider the following range of addresses: 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
How many host addresses are available on the 192.168.10.128/26 network?
62
What is the usable number of host IP addresses on a network that has a /26 mask?
62
Which address is a valid IPv6 link-local unicast address?
FE80::1:4545:6578:ABC1
Which protocol supports Stateless Address Autoconfiguration (SLAAC) for dynamic assignment of IPv6 addresses to a host?
ICMPv6
Which service provides dynamic global IPv6 addressing to end devices without using a server that keeps a record of available IPv6 addresses?
SLAAC
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.
A host is transmitting a multicast. Which host or hosts will receive it?
a specially defined group of hosts
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
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
What type of IPv6 address is FE80::1?
link-local
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
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