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- Question
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?
Options- A. Application
- B. Host-to-Host
- C. Internet
- D. Network Access
- Correct Answer
- Internet
ExplanationThe four layers of the DoD model are Application/Process, Host-to-Host, Internet, and Network Access. The Internet layer is equivalent to the Network layer of the OSI model. - 1. Which of the following are layers in the TCP/IP model?
- Application
- Session
- Transport
- Internet
- Data Link
- Physical
Options- A. 1 and 2
- B. 1, 3 and 4
- C. 2, 3 and 5
- D. 3, 4 and 5 Discuss
- 2. What flavor of Network Address Translation can be used to have one IP address allow many users to connect to the global Internet?
Options- A. NAT
- B. Static
- C. Dynamic
- D. PAT Discuss
- 3. Which WLAN IEEE specification allows up to 54Mbps at 2.4GHz?
Options- A. A
- B. B
- C. G
- D. N Discuss
- 4. To back up an IOS, what command will you use?
Options- A. backup IOS disk
- B. copy ios tftp
- C. copy tftp flash
- D. copy flash tftp Discuss
- 5. What does the command routerA(config)#line cons 0 allow you to perform next?
Options- A. Set the Telnet password.
- B. Shut down the router.
- C. Set your console password.
- D. Disable console connections. Discuss
- 6. Which of the following services use TCP?
- DHCP
- SMTP
- HTTP
- TFTP
- FTP
Options- A. 1 and 2
- B. 2, 3 and 5
- C. 1, 2 and 4
- D. 1, 3 and 4 Discuss
- 7. Which of the following is private IP address?
Options- A. 12.0.0.1
- B. 168.172.19.39
- C. 172.15.14.36
- D. 192.168.24.43 Discuss
- 8. Which statements are true regarding ICMP packets?
- They acknowledge receipt of a TCP segment.
- They guarantee datagram delivery.
- They can provide hosts with information about network problems.
- They are encapsulated within IP datagrams.
Options- A. 1 only
- B. 2 and 3
- C. 3 and 4
- D. 2, 3 and 4 Discuss
- 9. Which of the following services use UDP?
- DHCP
- SMTP
- SNMP
- FTP
- HTTP
- TFTP
Options- A. 1, 3 and 6
- B. 2 and 4
- C. 1, 2 and 4
- D. All of the above Discuss
- 10. Which layer 4 protocol is used for a Telnet connection?
Options- A. IP
- B. TCP
- C. TCP/IP
- D. UDP Discuss
TCP/IP problems
Search Results
Correct Answer: 1, 3 and 4
Explanation:
This seems like a hard question at first because it doesn't make sense. The listed answers are from the OSI model and the question asked about the TCP/IP protocol stack (DoD model). However, let's just look for what is wrong. First, the Session layer is not in the TCP/IP model; neither are the Data Link and Physical layers. This leaves us with the Transport layer (Host-to-Host in the DoD model), Internet layer (Network layer in the OSI), and Application layer (Application/Process in the DoD).
Correct Answer: PAT
Explanation:
Port Address Translation (PAT) allows a one-to-many approach to network address translation.
Correct Answer: G
Explanation:
IEEE 802.11B is 2.4GHz, but with a maximum of only 11Mbps. IEEE 802.11G is in the 2.4GHz range, with a top speed of 54Mbps.
Correct Answer: copy flash tftp
Explanation:
The command
copy flash tftp will prompt you to back up an existing IOS in flash to a TFTP host.
Correct Answer: Set your console password.
Explanation:
The command
line console 0 places you at a prompt where you can then set your console user-mode password.
Correct Answer: 2, 3 and 5
Explanation:
SMTP, HTTP and FTP use TCP.
Correct Answer: 192.168.24.43
Explanation:
Class A private address range is 10.0.0.0 through 10.255.255.255. Class B private address range is 172.16.0.0 through 172.31.255.255, and Class C private address range is 192.168.0.0 through 192.168.255.255.
Correct Answer: 3 and 4
Explanation:
Internet Control Message Protocol (ICMP) is used to send error messages through the network, but they do not work alone. Every segment or ICMP payload must be encapsulated within an IP datagram (or packet).
Correct Answer: 1, 3 and 6
Explanation:
DHCP, SNMP, and TFTP use UDP.
Correct Answer: TCP
Explanation:
Although Telnet does use TCP and IP (TCP/IP), the question specifically asks about layer 4, and IP works at layer 3. Telnet uses TCP at layer 4.
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