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CISCO INTRO TO NETWORKS MODULES 11-13 EXAM WITH ANSWERS -14
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CISCO INTRO TO NETWORKS MODULES 11-13 EXAM WITH ANSWERS -14
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CISCO INTRO TO NETWORKS MODULES 11-13 EXAM WITHANSWERS #14
Ipv4 address - correct answer An ipv4 address is a 32-bit hierarchical address that is
made up of a network portion and a host portion
Network portion of ipv4 address - correct answer The bits within the network portion of
the ipv4 address must be identical for all devices that reside in the same network.
Host portion of ipv4 address - correct answer The bits within the host portion of the
address must be unique to identify a specific host within a network
What does a host requires to show the network/host portsions of an Ipv4 address? -
correct answer A host requires a unique ipv4 address and a subnet mask to show the
network/host portions of the address.
Prefix length - correct answer The prefix length is the number of bits set to 1 in the
subnet mask. It is written in "slash notation", which is a "/" followed by the number of bits
set to 1.
Logical AND - correct answer Logical AND is the comparison of two bits. Only a 1 AND
1 produces a 1 and all other combination results in a 0. Any other combination results in
a 0.
What are the types of ipv4 addresses within each network? - correct answer Within
each network there are network addresses, host addresses, and a broadcast address.
Unicast - correct answer Unicast transmission refers to a device sending a message to
one other device in one-to-one communications. A unicast packet is a packet with a
destination IP address that is a unicast address which is the address of a single
recipient.
Broadcast - correct answer Broadcast transmission refers to a device sending a
message to all the devices on a network in one-to-all communications. A broadcast
packet has a destination IP address with all ones (1s) in the host portion, or 32 one (1)
bits.
Multicast - correct answer Multicast transmission reduces traffic by allowing a host to
send a single packet to a selected set of hosts that subscribe to a multicast group. A
multicast packet is a packet with a destination IP address that is a multicast address.
Ipv4 has reserved the 224.0.0.0 to 239.255.255.255 addresses as a multicast range.
Public ipv4 addresses - correct answer Public ipv4 addresses are globally routed
between ISP routers.
, Private ipv4 addresses - correct answer There are blocks of addresses called private
addresses that are used by most organizations to assign ipv4 addresses to internal
hosts. Most internal networks use private ipv4 addresses for addressing all internal
devices (intranet); however, these private addresses are not globally routable.
Private ipv4 address blocks - correct answer Network Address and Prefix RFC 1918
Private Address Range
10.0.0.0/8 10.0.0.0 - 10.255.255.255
172.16.0.0/12 172.16.0.0 - 172.31.255.255
192.168.0.0/16 192.168.0.0 - 192.168.255.255
Loopback ipv4 address - correct answer Loopback addresses used by a host to direct
traffic back to itself.
(127.0.0.0 /8 or 127.0.0.1 to 127.255.255.254)
Link-local ipv4 addresses - correct answer Link-local addresses are more commonly
known as APIPA addresses, or self-assigned addresses. They are used by a Windows
DHCP client to self-configure in the event that there are no DHCP servers available.
Link-local addresses can be used in a peer-to-peer connection but are not commonly
used for this purpose.
(169.254.0.0 /16 or 169.254.0.1 to 169.254.255.254)
Classful ipv4 addresses - correct answer In 1981, ipv4 addresses were assigned using
classful addressing: A, B, or C.
Class A (0.0.0.0/8 to 127.0.0.0/8) - Designed to support extremely large networks
Class B (128.0.0.0 /16 - 191.255.0.0 /16) - Designed to support the needs of moderate
to large size networks
Class C (192.0.0.0 /24 - 223.255.255.0 /24) - Designed to support small networks with a
maximum of 254 hosts.
Public ipv4 addresses - correct answer Public ipv4 addresses must be unique, and are
globally routed over the internet.
Public ipv4 addresses are managed by___ - correct answer Internet Assigned Numbers
Authority (IANA)
RIR (Regional Internet Registry) - correct answer The IANA manages and allocates
blocks of IP addresses to the Regional Internet Registries (rirs).
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