2. Chapter 05 Exam Review
CCNA Discovery 01 – Computer and Network Fundamentals
Presented by: Phillip Place Cisco Academy Instructor Lake Michigan College Benton Harbor Michigan
On the web: cis140lmc.g-school.net © 2011 G-Tech Educational Services

3. Q
How many bits make up an IPv4 Address? A
32 Bits

4. Q
Which portion of an IP address identifies a specific device? A
The host portion.

5. Q
A host addressed as will belong to what network? A

6. Q
What is the subnet mask that provides the largest number of hosts? A

7. Q
How many bits can be used for a default class B host IP address? A
16 bits

8. Q
How many IP addresses can be used on a default class C network? A
256

9. Q
How many host IP addresses are available in a default class C network? A
254

10. Q
Using a default mask, what portion of this address is the network portion: A

11. Q A A single or specific host address is used
In a unicast packet, which type of destination IP address is used? A
A single or specific host address is used

12. Q
What does the destination MAC address look like in a multicast frame? A
It begins with 01:00:5E

13. Q
What does the destination MAC address look like in a broadcast frame? A
FF:FF:FF:FF:FF:FF

14. Q A Talking on the phone Ordering food at the drivethru
Give examples of unicast messages? A
Talking on the phone
Ordering food at the drivethru
Passing a note in class

15. Q A A corresponding MAC and IP address for the destination host.
In Ethernet, what must a unicast message have in order to be successfully delivered? A
A corresponding MAC and IP address for the destination host.

16. Q
In the default DHCP environment, what happens to an IP address once the lease expires? A
It if returned to the pool of addresses and can be assigned to a different host.

17. Q
What is DHCP? A
Dynamic Host Control Protocol

18. Q
What technology is used to Dynamically assign network connection configuration settings to a host? A
DHCP

19. Q A What are the steps in the DHCP process?
Host requests an IP address through a broadcast message to the network
If there is a valid DHCP server on the network it will reply with an offer
The client send a message back to the DHCP server accepting the offer
The DHCP server records the MAC and new IP information and sends confirmation of the lease to the client A

20. Q
In this diagram, which IP address would the client use as the default gateway? A

21. Q A What are benefits of private addresses?
Eases the problem of limited IPv4 public addresses
Prevents private traffic from being routed publically
Allows for scalable IP network infrastructure

22. Q A What are benefits of NAT?
Prevents external access or detection of internal IP addressing or systems
Allows multiple internal systems to share a single public IP
Eases the problem of limited IPv4 public addresses
Allows for greater control and filtering of Internet traffic

23. Q A What network traffic is affected by NAT?
Only traffic leaving the network is affected by NAT.

24. Q
If a network’s router has Network Address Translation enabled, how is host to host communication affected? A
It is not so long as that communication never leaves the network.

25. Q A What is the IP Class A private address range?–

26. Q A What is the IP Class B private address range?–

27. Q A What is the IP Class C private address range?–

28. Q
What is the default subnet mask for a Class A network? A

29. Q
What is the default subnet mask for a Class B network? A

30. Q
If I were designing a small network of less than 20 hosts, what would my IP addresses most likely look like? A
*.* - Class C Private

31. Q
You are creating a massive network with the potential of hundreds of hosts. Knowing you may need room for further expansion, what would you use for the IP addressing? A
10.*.*.* - Class A Private

32. Q
The problem is not physical, yet the client cannot ping the server. Why?
IP:
SM:
GW:
IP: A
IP:
SM:
GW:
The server is on the wrong network

33. Do You Feel Ready?