CCNA DEVASC M6 – Network Fundamentals

1. Which OSI layer is responsible for establishing an
end-to-end connection between the sender and the
2. What layer of the TCP/IP reference model is the
equivalent of the network layer in the OSI model?
3. Which of the following are examples of application
layer protocols in the TCP/IP reference model?
(Choose two.)
4. What is the transport layer PDU called in the
TCP/IP reference model?
5. What is the role of the Preamble field in the
Ethernet header?
6. How many bits are in a MAC address?
7. What happens to a data frame for which a switch
doesn’t have the destination MAC address in its
switching table?
8. What is the bit pattern in the first byte for Class C
IPv4 addresses?
9. What is the broadcast address for the network?
10. What are some of the characteristics of IPv6
addresses? (Choose three.)
11. Ethernet is a ________ network topology.
12. ________-area networks usually use public
networks like telephone, cellular, or satellite
13. Which of the following is the least secure in terms of
privacy of the user?
14. Which of the following is not true of a Layer 3
15. Which of the following can be used to segment a
physical switch into multiple logical networks?
16. FIB tables, which contain precomputed routes,
reverse lookups, and so on, are used in which type of
17. What is NAT used for?
18. In a network controller, which plane is concerned
with administrative access to a network device
19. In a Cisco SD-WAN solution, what is the main brain
of the entire solution that manages the control
20. What are some of the benefits that DHCP offers?
(Choose two.)
21. What DNS component is configured on a network
22. What are some of the benefits of Network Address
Translation? (Choose three.)
23. What version of SNMP was developed with a
security focus in mind?
24. What transport layer protocol and port are used by
25. What network devices should be included in a Layer
3 diagram?
26. What popular network utility is used to troubleshoot
DNS issues?
27. What is the PDU called at the Internet layer?
28. How many hexadecimal numbers represent each MAC address?
29. What are the three functional planes of Cisco switches? (Choose three.)
30. Which statement about the control plane of a Cisco switch is true?
31. At which layer of the TCP/IP stack does IP operate?
32. Which term is used to describe the application identifier for TCP and UDP applications?
33. In which two ways would a DNS server or default gateway malfunction manifest itself? (Choose two.)
34. This protocol is used for verifying the status of TCP ports.
35. This protocol is used to retrieve information from the MIB.
36. This protocol is used by applications sending emails.
37. This protocol is used as virtual terminal for a remote system.
38. Which two network devices are typically used to perform NAT for an enterprise network? (Choose two.)
39. Which protocol enables devices to obtain the subnet mask for a network?
40. Which two functions can LAN switches and bridges provide? (Choose two.)
41. Ethernet switching or bridging _____ the available bandwidth of a network by creating
_____ network segments. (Source: Introducing Basic Layer 2 Switching and Bridging
42. Which frame transmission mode reads the destination address of a frame before
forwarding it?
43. Which feature do switches and bridges implement so that they can receive and transmit
frames independently on each port?
44. What information in a frame does a switch or bridge use to make frame-forwarding
45. When a frame arrives with a known destination address, where does the switch or
bridge forward it?
46. Which three frame types are flooded to all ports except the source port on a switch?
(Choose three.)
47. Which term commonly describes the endless flooding or looping of frames? (
48. Which term describes multiple copies of a frame arriving on different ports of a
49. When does the STP automatically reconfigure switch or bridge ports?
50. How does the STP provide a loop-free network?


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