Written Lab 3.2: Mapping Applications to the DoD Model
The four layers of the DoD model are Process/Application, Host-to-Host, Internet, and Network Access. Identify the
layer of the DoD model on which each of these protocols operates.
1. Internet Protocol (IP)
2. Telnet
3. FTP
4. SNMP
5. DNS
6. Address Resolution Protocol (ARP)
7. DHCP/BootP
8. Transmission Control Protocol (TCP)
9. X Window
10. User Datagram Protocol (UDP)
11. NFS
12. Internet Control Message Protocol (ICMP)
13. Reverse Address Resolution Protocol (RARP)
14. Proxy ARP
15. TFTP
16. SMTP
17. LPD
Review Questions
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The following questions are designed to test your understanding of this chapter’s material. For more
information on how to get additional questions, please see
www.lammle.com/ccna
.
You can find the answers to these questions in Appendix B, “Answers to Review Questions.”
1. What must happen if a DHCP IP conflict occurs?
1. Proxy ARP will fix the issue.
2. The client uses a gratuitous ARP to fix the issue.
3. The administrator must fix the conflict by hand at the DHCP server.
4. The DHCP server will reassign new IP addresses to both computers.
2. Which of the following Application layer protocols sets up a secure session that’s similar to Telnet?
1. FTP
2. SSH
3. DNS
4. DHCP
3. Which of the following mechanisms is used by the client to avoid a duplicate IP address during the DHCP
process?
1. Ping
2. Traceroute
3. Gratuitous ARP
4. Pathping
4. What protocol is used to find the hardware address of a local device?
1. RARP
2. ARP
3. IP
4. ICMP
5. BootP
5. Which of the following are layers in the TCP/IP model? (Choose three.)
1. Application
2. Session
3. Transport
4. Internet
5. Data Link
6. Physical
6. Which class of IP address provides a maximum of only 254 host addresses per network ID?
1. Class A
2. Class B
3. Class C
4. Class D
5. Class E
7. Which of the following describe the DHCP Discover message? (Choose two.)
1. It uses ff:ff:ff:ff:ff:ff as a layer 2 broadcast.
2. It uses UDP as the Transport layer protocol.
3. It uses TCP as the Transport layer protocol.
4. It does not use a layer 2 destination address.
8. Which layer 4 protocol is used for a Telnet connection?
1. IP
2. TCP
3. TCP/IP
4. UDP
5. ICMP
9. Private IP addressing was specified in RFC __________ .
10. Which of the following services use TCP? (Choose three.)
1. DHCP
2. SMTP
3. SNMP
4. FTP
5. HTTP
6. TFTP
11. Which Class of IP addresses uses the pattern shown here?
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1. Class A
2. Class B
3. Class C
4. Class D
12. Which of the following is an example of a multicast address?
1. 10.6.9.1
2. 192.168.10.6
3. 224.0.0.10
4. 172.16.9.5
13. The following illustration shows a data structure header. What protocol is this header from?
1. IP
2. ICMP
3. TCP
4. UDP
5. ARP
6. RARP
14. If you use either Telnet or FTP, what layer are you using to generate the data?
1. Application
2. Presentation
3. Session
4. Transport
15. The DoD model (also called the TCP/IP stack) has four layers. Which layer of the DoD model is equivalent
to the Network layer of the OSI model?
1. Application
2. Host-to-Host
3. Internet
4. Network Access
16. Which two of the following are private IP addresses?
1. 12.0.0.1
2. 168.172.19.39
3. 172.20.14.36
4. 172.33.194.30
5. 192.168.24.43
17. What layer in the TCP/IP stack is equivalent to the Transport layer of the OSI model?
1. Application
2. Host-to-Host
3. Internet
4. Network Access
18. Which statements are true regarding ICMP packets? (Choose two.)
1. ICMP guarantees datagram delivery.
2. ICMP can provide hosts with information about network problems.
3. ICMP is encapsulated within IP datagrams.
4. ICMP is encapsulated within UDP datagrams.
19. What is the address range of a Class B network address in binary?
1. 01
xxxxxx
2. 0
xxxxxxx
3. 10
xxxxxx
4. 110
xxxxx
20. Drag the steps in the DHCP process and place them in the correct order on the right.
DHCPOffer
Drop Target A
DHCPDiscover Drop Target B
DHCPAck
Drop Target C
DHCPRequest Drop Target D
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