Chapter 11 & 13 Study Guide
How many total addresses are in a /24 network?
256
What protocol is used in IP networks from command prompt to verify connectivity?
ICMP
How many bits are in an IPv4 and IPv6 address?
IPv4 - 32 bits IPv6 - 128 bits
Know how to convert decimal to binary and vice versa.
Number line method and ANDing method. Study this on your own
What are the ranges of public and privet IP addresses?
PRIVATE 10.0.0.0 - 10.255.255.255, 172.16.0.0 - 172.31.255.255, 192.168.0.0 - 192.168.255.255 All others are public
Which statement accurately describes public IP addresses?
Public IP addresses must be unique across the entire Internet.
The 8-bit binary value for 41 is
00101001
The last host address on the 10.15.25.0/24 network is:
10.15.25.254 OR 10.15.25.254/24
How many portions are there in an IPv4 address and what are they?
2, Network and Host
lWhat is an APIPA address?
Automatic private IP address; automatically assigns an IP while searching for a DHCP server
A message is sent to all hosts on a remote network. Which type of message is it?
directed broadcast
A user is unable to access the company server from a computer. On issuing the ipconfig command, the user finds that the IP address of the computer is displayed as 169.254.0.2. What type of address is this?
link-local
What are unicast, broadcast and multicast messages?
Unicast: one source to one destination Broadcast: one source to all possible destinations Multicast: one source to multiple destinations
How do I find the path that a packet takes to reach its destination?
Use the tracert command. EX tracert 10.0.0.1
What are characteristics in common among unicast, broadcast, and multicast IPv4 communication?
there are never multiple destination addresses in the header the source address is always a unicast address
Which type of broadcast would a router not forward to a remote network?
Limited broadcast
What are the special IPv4 addresses that every device has?
Loopback address Link local address
Which type of IPv4 address allows a host to send a message to a group of hosts?
Multicast
What do unicast, broadcast and multicast communication have in common?
They are all used to forward packets in a network.
Why do we have a network address?
They are unique and are used to distinguish networks that have their own hosts and addresses which are not unique
What utility is used to identify the network path between hosts?
Tracert
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 if the workstation can communicate on the network
Match the legacy IP address class with the answer that represents the entire private address range reserved within that class.
A = 10.0.0.0 - 10.255.255.255 B = 172.16.0.0 - 172.31.255.255 C = 192.168.0.0 - 192.168.255.255
Describe a layer 3 broadcast.
A broadcast used to forward packets between LANs
What is a limited broadcast?
A packet is sent to a specific network or series of networks.
What is a directed broadcast?
An IP packet whose destination address is a valid broadcast address for some IP subnet but which originates from a node that is not itself part of that destination subnet.
Which two statements describe broadcast transmissions on a wired network?
Directed broadcasts are intended for all hosts on a local or remote network. Limited broadcasts are only intended for the hosts on a local network.
What is ICMP/Ping used for?
ICMP provides feedback about issues related to the processing of IP packets under certain conditions. Ping is used to display the connection status between two IPs