Test your basic knowledge |

CCNA Hard

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. As a CCNA candidate - you must know the various layers of the OSI model. At which layers of the OSI model do Wide Area Networks operate in?
Physical Layer and Datalink Layer
Show cdp neighbor detail
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
HTTPS - SMTP - and TFTP

2. Which one of the following characterisitcs is true regardigin the use of the hubs and switches?
The network layer
Switches increase the number of collision domains in the network.
100 meters
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

3. Which of the following can lead to the contribution of LAN traffic congestion?
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Switches - Bridges - and Routers
Configure the switch so that it has a lower priority than other switches in the network.
In an improperly implemented redundant topology

4. The Certkiller network administrator needs to a switch named CK1 to become the root bridge for a redundant path switched network. What can be done to ensure that CK1 will always assume the role as the root bridge?
The host network card and the switch port must be capable of operating in full-duplex mode. - There are no collisions in full-duplex mode. and A dedicated switch port is required for each full-duplex node.
Configure the switch so that it has lower priority than other switches in the network
It encourages industry standardization by defining what functions occur at each layer of the model and It divides the network communication process into smaller and simpler components; thus aiding component development - design and troubleshooting
It will prevent segment 1's broadcasts from getting to segment 2.

5. Acknowledgements - sequencing - and flow control are functions that are handled by which layer of the OSI model?
It is the sum of the costs based on bandwidth
A cross-over cable
Layer 4
The host network card and the switch port must be capable of operating in full-duplex mode. - There are no collisions in full-duplex mode. and A dedicated switch port is required for each full-duplex node.

6. Cisco is the leader in the router market space. What basic functions do their routers perform in a network?
Device Identifiers - Capabilities list - Platform
Path selections and Packet switching.
Physical Layer and Datalink Layer
All switch and bridge ports are in either the forwarding or blocking state.

7. Assuming you build networks to exact specifications - What is the recommended maximum length a 10BaseT cable can be before it has to be segmented or repeated?
100 meters
CertK Switch(config)# ip default-gateway 192.168.1.115
802.3ab and 802.3z
All switch and bridge ports are in either the forwarding or blocking state.

8. While troubleshooting an issue in the Certkiller LAN you notice that a network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement - What is known about the network interface port?
Show arp and Show interface
This is an Ethernet port operating at half duplex
Application
To allow remote management of the switch.

9. The CK network administrator needs to determine what LAN devices to install on the CK network. What are two advantages of using Layer 2 Ethernet switches over hubs?
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Physical Layer and Datalink Layer
Auto - Desirable - and On
Show arp and Show interface

10. Which protocol uses TCP port 443 at layer 4?
It provides a mechanism for the receiver to control the transmission speed - You have just installed a new web server on the Certkiller network. You are required to ensure that the web server is accessible from the Internet. The network uses private
HTTPS
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
The port is experiencing errors

11. You need to describe the various types of flow control to your co-workers. Which of the following are types of flow control that can be used in a network?
A cross-over cable
VLAN and Swtich
HTTPS
Congestion avoidance - Windowing and Buffering

12. ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets?
VTP
MAC Address and Bridge Priority
Increased latency and Filtering of all frame errors
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.

13. You want to influence the root bridge selection within the Certkiller LAN. Which two values are used by spanning tree protocol to elect a root bridge? (Choose two.)
VLAN and Swtich
MAC Address and Bridge Priority
Layer 4
To allow remote management of the switch.

14. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
Duplex mismatch
Network
Information about a route should never be sent back in the direction from which the original update came.
Fiber optic cable.

15. While troubleshooting a network connectivity problem - a Certkiller technician observes steady link lights on both the workstation NIC and the switch port to which the workstation is connected. However - when the ping command is issued from the works
The network layer
Show arp and Show interface
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.

16. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
802.1Q and ISL
It will prevent segment 1's broadcasts from getting to segment 2.
Application
Port security

17. A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?
HTTPS - SMTP - and TFTP
The switch will forward the frame to a specific port
Decrease the window size.
It operates without collisions and It provides faster data transfer

18. What kind of cable should be used to establish a trunked line between two Catalyst switches?
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
The port is experiencing errors
A cross-over cable
Packet switching - Packet filtering and Internetwork communication.

19. As the Certkiller network administrator - you are required to have a firmunderstanding of the OSI model. Why does the data communication industry use the layered OSI reference model?
It encourages industry standardization by defining what functions occur at each layer of the model and It divides the network communication process into smaller and simpler components; thus aiding component development - design and troubleshooting
A device listens and waits until the media is not busy before transmitting. and All devices on an Ethernet segment see data that passes on the network medium.
Port security
Layer 4

20. You need to perform some initial configuration tasks on a new Certkiller switch. What is the purpose of assigning an IP address to a switch?
Switches - Bridges - and Routers
Packet switching - Packet filtering and Internetwork communication.
To allow remote management of the switch.
This is an Ethernet port operating at half duplex

21. You need to perform some initial configuration tasks on a new Certkiller switch. What are the possible trunking modes for this switch port?
Hosts use a logical bus topology
VLAN and Swtich
Show cdp neighbor detail
Auto - On - and Desirable

22. Both the switches and hubs are being utilized within the CK network. Which of the following is true regarding the use of switches and hubs for the network connectivity in this network?
The transport layer divides a data stream into segments and adds reliability and flow control information. Packets are created when the network layer adds Layer 3 addresses and control information to a segment.
Certkiller B > trace
Switches increase the number of collision domains in the network.
The port is experiencing errors

23. When you compare the differences between half-duplex and full-duplex Ethernet - which of the following characteristics are exclusive to half-duplex?
802.3ab and 802.3z
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

24. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
Serial0/1 is down - line protocol is down
Transport
Learning - Listening - and Forwarding
The host network card and the switch port must be capable of operating in full-duplex mode. - There are no collisions in full-duplex mode. and A dedicated switch port is required for each full-duplex node.

25. Which two of the following values does STP take into consideration when it elects the root bridge?
Auto - Desirable - and On
The Bridgeg ID and The bridge priority
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Learning - Listening - and Forwarding

26. Both bridges are switches are being used throughout the CK LAN. Which of the following statements are true regarding bridges and switches in this network?
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Transport
Switches usually have a higher number of ports then most bridges - Both bridges and switches forward Layer 2 broadcasts and Both bridges and switches make forwarding decisions based on Layer 2 addresses.
The transport layer divides a data stream into segments and adds reliability and flow control information. Packets are created when the network layer adds Layer 3 addresses and control information to a segment.

27. The Certkiller network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a host that has been newly connected to the network. Which protocols were used during the test?
The system is malfunctioning.
Device Identifiers - Capabilities list - Platform
Network
ARP and ICMP

28. Which three of the protocols below belong to the application layer? (Select three answer choices)
HTTPS - SMTP - and TFTP
Layer 3
It is the sum of the costs based on bandwidth
Sequence number - Window size - and Acknowledgment number

29. Some of the older Certkiller switches store the entire frame before forwarding it to the destination. What are two effects on network performance of configuring a switch to do this?
The port is experiencing errors
Duplex mismatch
Increased latency and Filtering of all frame errors
The network layer

30. Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet?
The interfaces must be configured for NAT.
Data link
Packet switching - Packet filtering and Internetwork communication.
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.

31. The Certkiller corporate LAN consists of one large flat network. You decide to segment this LAN into two separate networks with a router. What will be the affect of this change?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

32. As a CCNA candidate - you will be expected to know the OSI model very well. Which of the following are associated with the application layer (layer 7) of the OSI model?
Telnet and FTP
To obtain the IP address of a connected device in order to telnet to the device - To verify Layer 2 connectivity between two devices when Layer 3 fails.
It operates without collisions and It provides faster data transfer
It is used to prevent switching loops in networks with redundant switched routes.

33. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
An additional broadcast domain will be created.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
The transport layer divides a data stream into segments and adds reliability and flow control information. Packets are created when the network layer adds Layer 3 addresses and control information to a segment.
Encapsulations PPP and authentication CHAP

34. Which OSI layer header contains the address of a destination host that is on another network?
It is the sum of the costs based on bandwidth
Auto - On - and Desirable
802.3ab and 802.3z
Network

35. You are the administrator of the Certkiller LAN and you have been reviewing error logs of networking devices and notice a large number of errors associated with several MAC addresses. You suspect that some of the errors are being generated by the rou
Show arp and Show interface
It will prevent segment 1's broadcasts from getting to segment 2.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Switches - Bridges - and Routers

36. Which of the following services use TCP?
SMTP FTP and HTTP
VTP
It operates without collisions and It provides faster data transfer
To obtain the IP address of a connected device in order to telnet to the device - To verify Layer 2 connectivity between two devices when Layer 3 fails.

37. The LAN needs are expanding at the CK corporate office - which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the CK network. Which of the following are layer 1 devices that you can use?
TCP
A hub and A repeater.
Layer 4
The switch must be reachable through a port connected to its management VLAN. and The switch must be configured with an IP address - subnet mask - and default gateway.

38. Which fields are included in the TCP header?
802.1Q and ISL
It operates without collisions and It provides faster data transfer
Source Port - Acknowledgment Number - and Window
HTTPS

39. Which layer of the OSI reference model is responsible for ensuring reliable end to end delivery of data?
The host network card and the switch port must be capable of operating in full-duplex mode. - There are no collisions in full-duplex mode. and A dedicated switch port is required for each full-duplex node.
Physical Layer and Datalink Layer
Transport
All switch and bridge ports are in either the forwarding or blocking state.

40. You are logged into a router and wish to view the layer 3 information about your neighboring Cisco routers. What IOS command gives layer 3 information for of the directly connected router interfaces?
Show cdp neighbor detail
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Port security
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.

41. The corporate head office of Certkiller has a teleconferencing system that uses VOIP (voice over IP) technology. This system uses UDP as the transport for the data transmissions. If these UDP datagrams arrive at their destination out of sequence - wh
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
SMTP FTP and HTTP
The network layer
802.1Q and ISL

42. In a switched LAN network - What is the Spanning-Tree algorithm used for?
The network layer
In an improperly implemented redundant topology
VTP
It is used to prevent switching loops in networks with redundant switched routes.

43. An administrator would like to configure a switch over a virtual terminal connection from locations outside of the local LAN. Which of the following are required in order for the switch to be configured from a remote location?
Packet switching - Packet filtering and Internetwork communication.
The switch must be reachable through a port connected to its management VLAN. and The switch must be configured with an IP address - subnet mask - and default gateway.
Auto - Desirable - and On
STP

44. Which of the following devices can the Certkiller network administrator use to segment the LAN?
Show arp and Show interface
Network
Show cdp neighbor detail
Switches - Bridges - and Routers

45. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
In an improperly implemented redundant topology
SMTP - FTP - HTTP - and HTTPS

46. Which two statements describe the operation of the CSMA/CD access method - which is in use on the Certkiller network?
Switches - Bridges - and Routers
Source Port - Acknowledgment Number - and Window
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. and After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to
It will prevent segment 1's broadcasts from getting to segment 2.

47. Which Layer 4 protocol is used for a Telnet connections between two CK routers?
The network layer
Switches increase the number of collision domains in the network.
It will prevent segment 1's broadcasts from getting to segment 2.
TCP

48. Which of the following are true of Ethernet technology?
Hosts use a logical bus topology
A device listens and waits until the media is not busy before transmitting. and All devices on an Ethernet segment see data that passes on the network medium.
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
VLAN and Swtich

49. Which of the following are spanning tree port states?
Port security
Layer 4
Learning - Listening - and Forwarding
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

50. Which of the following are types of flow control?
Switches - Bridges - and Routers
Auto - On - and Desirable
Hosts use a logical bus topology
Buffering - Cut-through - and Congestion avoidance