CISCO Certification problems
- 1. If you use either Telnet or FTP, what layer are you using to generate the data?
Options- A. Application
- B. Presentation
- C. Session
- D. Transport Discuss
Correct Answer: Application
Explanation:
Both FTP and Telnet use TCP at the Transport layer; however, they both are Application layer protocols, so the Application layer is the best answer for this question.
- 2. 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 Discuss
Correct Answer: Internet
Explanation:
The 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.
- 3. Which of the following protocols uses both TCP and UDP?
Options- A. FTP
- B. SMTP
- C. Telnet
- D. DNS Discuss
Correct Answer: DNS
Explanation:
DNS uses TCP for zone exchanges between servers and UDP when a client is trying to resolve a hostname to an IP address.
- 4. Differentiate the DoD and the OSI network models? Discuss
Correct Answer: The DoD model is a condensed version of the OSI model, composed of four layers instead of seven, but is nonetheless like the OSI model in that it can be used to describe packet creation and devices and protocols can be mapped to its layers
- 5. If a host on a network has the address 172.16.45.14/30, what is the subnetwork this host belongs to?
Options- A. 172.16.45.0
- B. 172.16.45.4
- C. 172.16.45.8
- D. 172.16.45.12 Discuss
Correct Answer: 172.16.45.12
Explanation:
A/30, regardless of the class of address, has a 252 in the fourth octet. This means we have a block size of 4 and our subnets are o,4,8,12,16, etc. Address 14 is obviously in the 12 subnet.
- 6. You need to subnet a network that has 5 subnets, each wit at least 16 hosts. Which classful subnet mask would you use?
Options- A. 255.255.255.192
- B. 255.255.255.224
- C. 255.255.255.240
- D. 255.255.255.248 Discuss
Correct Answer: 255.255.255.224
Explanation:
You need 5 subnets, each with at least 16 hosts. The mask 255.255.255.240 provides 16 subnets with 14 hosts - this will not work. The mask 255.255.255.224 provides 8 subnets, each with 30 hosts. This is the best answer.
- 7. You telnet into a remote device and type debug ip rip, but no output from the debug command is seen. What could the problem be?
Options- A. You must type the show ip rip command first
- B. IP addressing on the network is incorrect
- C. You must use the terminal monitor command
- D. Debug output is sent only to the console. Discuss
Correct Answer: You must use the terminal monitor command
Explanation:
To see console messages through your Telnet session, you must enter the terminal monitor command.
- 8. What is the command to copy the startup-config filre to DRAM? Discuss
Correct Answer: copy start run
- 9. A network administrator views the output from the show ip route command. A network that is advertised by both RIP and EIGRP appears in the routing table flagged as an EIGRP route. why is the RIP route to this network not used in the routing table?
Options- A. EIGRP has a faster update timer
- B. EIGRP has a lower administrative distance
- C. RIP has a higher metric for that route
- D. The RIP path has a routing loop Discuss
Correct Answer: EIGRP has a lower administrative distance
Explanation:
RIP has an administrative distance (AD) of 120, while EIGRP has an administrative distance of 90, so the router will discard any route with a higher AD than 90 to that same network.
- 10. If your routing table has a static, a RIP, and an EIGRP route to the same network, which route will be used to route packets by default?
Options- A. Any available route
- B. RIP route
- C. Static route
- D. EIGRP route Discuss
Correct Answer: Static route
Explanation:
Static routes have an administrative distance of 1 by default. Unless you change this, a static route will always be used over any other dynamically learned route. EIGRP has an administrative distance of 90, and RIP has an administrative distance of 120, by default
Programming
Copyright ©CuriousTab. All rights reserved.