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. Certkiller is installing IP phones in a new office. The phones and office computers connect to the same device. To ensure maximum throughout for the phone data sessions - the company needs to make sure that the phone traffic is on a different network
VLAN and Swtich
To prevent switching loops in networks with redundant switched paths.
Duplex mismatch
Learning - Listening - and Forwarding

2. You unsuccessfully try to ping the Internet from the PC host on the LAN. During the troubleshooting process - you enter the 'show ip nat translations' command but the output is blank. What is the most likely cause of the problem?
The interfaces must be configured for NAT.
Sequence number - Window size - and Acknowledgment number
Fiber optic cable.
Encapsulations PPP and authentication CHAP

3. 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?
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.
Learning - Listening - and Forwarding
Hosts use a logical bus topology
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

4. What is the purpose of the spanning-tree algorithm in a switched LAN?
Show cdp neighbor detail
To prevent switching loops in networks with redundant switched paths.
Sequence number - Window size - and Acknowledgment number
802.3ab and 802.3z

5. Which three of the protocols below belong to the application layer? (Select three answer choices)
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
HTTPS - SMTP - and TFTP
Data link
Encapsulations PPP and authentication CHAP

6. Which of the following correctly describe steps in the OSI date encapsulation process?
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.
100 meters
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.
Duplex mismatch

7. Which of the following devices can the Certkiller network administrator use to segment the LAN?
This is an Ethernet port operating at half duplex
Configure the switch so that it has lower priority than other switches in the network
VTP
Switches - Bridges - and Routers

8. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
Layer 4
ARP and ICMP
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
Fiber optic cable.

9. 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
802.1Q and ISL
Show arp and Show interface
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
HTTPS

10. 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
Serial0/1 is down - line protocol is down
All switch and bridge ports are in either the forwarding or blocking state.
Application

11. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
Buffering - Cut-through - and Congestion avoidance
VTP
802.1Q and ISL
Network

12. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
Switches increase the number of collision domains in the network.
Increased latency and Filtering of all frame errors
HTTPS - SMTP - and TFTP
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth

13. Which of the following are spanning tree port states?
Physical Layer and Datalink Layer
Learning - Listening - and Forwarding
802.1Q and ISL
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.

14. A Certkiller technician is troubleshooting connectivity problems between two routers that are directly connected through the serial line. The technician notices that the serial line is up but cannot see any neighbors displayed in the output of the sh
Data link
Layer 4
Physical Layer and Datalink Layer
Telnet and FTP

15. As a network Admin - you will need to decide on the appropriate network devices to use. Which of the following correctly describes the roles of the devices in a WAN?
Network
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
A jam signal informs all devices that a collision occurred. - The devices that are involved in the collision stops transmitting for a short time. and The collision invokes a random back-off algorithm.
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.

16. You have set up an Internet based FTP server - where people can upload and download files. In terms of the OSI model - What is the highest layer used during the FTP sessions.
HTTPS
Application
Auto - On - and Desirable
Buffering - Cut-through - and Congestion avoidance

17. A network administrator needs to force a high-performance switch that is located in the MDF to become the root bridge for a redundant path switched network. What can be done to ensure that this switch assumes the role of the Root Bridge?
An electrical pulse indicates that the collision has cleared.
Configure the switch so that it has a lower priority than other switches in the network.
Network
Information about a route should never be sent back in the direction from which the original update came.

18. Which of the following correctly describe the various functions and virtues of a router?
Switches increase the number of collision domains in the network.
Packet switching - Packet filtering and Internetwork communication.
100 meters
A broadcast address will never be the source address of a frame

19. A host computer has been correctly configured with a static IP address - but the default gateway is incorrectly set. Which layer of the OSI model will be first effected by this configuration error?
Network
Switches increase the number of collision domains in the network.
Layer 3
HTTPS - SMTP - and TFTP

20. By default - which of the following factors determines the spanning-tree path cost?
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
It is the sum of the costs based on bandwidth
Certkiller B > trace
VTP

21. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
The Bridgeg ID and The bridge priority
The system is malfunctioning.
In an improperly implemented redundant topology
VTP will allow switches to share VLAN configuration information

22. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in the Certkiller LAN?
Switches - Bridges - and Routers
Data link
Fiber optic cable.
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.

23. Acknowledgements - sequencing - and flow control are functions that are handled by which layer of the OSI model?
Data link
The network layer
Layer 4
Application

24. 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
MAC Address and Bridge Priority
In an improperly implemented redundant topology
Switches - Bridges - and Routers

25. 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?
Learning - Listening - and Forwarding
Port security
100 meters
Show cdp neighbor detail

26. Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet?
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Congestion avoidance - Windowing and Buffering
It is the sum of the costs based on bandwidth
The switch that will share the VLAN information must be in the VTP Server mode. -The switches must be in the same VTP domain. - The switches must be configured to use the same STP version. and The switches must be connected over VLAN trunks.

27. Cisco is the leader in the router market space. What basic functions do their routers perform in a network?
Path selections and Packet switching.
The sequence number in the TCP header.
Telnet and FTP
ARP and ICMP

28. Which of the following are types of flow control?
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
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
Buffering - Cut-through - and Congestion avoidance
SMTP FTP and HTTP

29. When comparing and contrasting the similarities and differences between bridges and switches - which of the following are valid statements?
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
Fiber optic cable.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
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

30. Which Layer 4 protocol is used for a Telnet connections between two CK routers?
TCP
Layer 4
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

31. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
The Bridgeg ID and The bridge priority
STP
An electrical pulse indicates that the collision has cleared.
Transport

32. When you compare the differences between half-duplex and full-duplex Ethernet - which of the following characteristics are exclusive to half-duplex?
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
Switches - Bridges - and Routers
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
All switch and bridge ports are in either the forwarding or blocking state.

33. At which layer of the OSI model does the protocol that provides the information displayed by the 'show cdp neighbors' command operate?
Data link
A jam signal informs all devices that a collision occurred. - The devices that are involved in the collision stops transmitting for a short time. and The collision invokes a random back-off algorithm.
A cross-over cable
It is used to prevent switching loops in networks with redundant switched routes.

34. A Certkiller Ethernet switch receives a unicast frame with a destination MAC that IS listed in the switch table. What will this switch do with the frame?
The switch will forward the frame to a specific port
Network
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.
Path selections and Packet switching.

35. 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

36. Which of the following services use TCP?
Packet switching - Packet filtering and Internetwork communication.
Layer 4
SMTP FTP and HTTP
Learning - Listening - and Forwarding

37. Which of the protocols below use TCP at the transport layer?
The network layer
A cross-over cable
An electrical pulse indicates that the collision has cleared.
SMTP - FTP - HTTP - and HTTPS

38. Network equipment supporting the use of flow control mechanisms has been recently installed in the CK network. What is the purpose of flow control in a data network?
STP
It is the sum of the costs based on bandwidth
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
VLAN and Swtich

39. Which two of the following values does STP take into consideration when it elects the root bridge?
It is the sum of the costs based on bandwidth
The Bridgeg ID and The bridge priority
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
Sequence number - Window size - and Acknowledgment number

40. What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?
Layer 4
All switch and bridge ports are in either the forwarding or blocking state.
Auto - On - and Desirable
Congestion avoidance - Windowing and Buffering

41. 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
Switches increase the number of collision domains in the network.
The network layer
Packet switching - Packet filtering and Internetwork communication.
Fiber optic cable.

42. Which fields are included in the TCP header?
To prevent switching loops in networks with redundant switched paths.
Source Port - Acknowledgment Number - and Window
Congestion avoidance - Windowing and Buffering
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

43. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
All switch and bridge ports are in either the forwarding or blocking state.
Show arp and Show interface
Network
Layer 3

44. 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?
All switch and bridge ports are in either the forwarding or blocking state.
To prevent switching loops in networks with redundant switched paths.
Layer 3
To allow remote management of the switch.

45. Which of the following are true of Ethernet technology?
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Switches increase the number of collision domains in the network.
A hub and A repeater.
Hosts use a logical bus topology

46. CDP is being used trhoughout the CK network. What are two reasons why the CK network administrator would use CDP?
Path selections and Packet switching.
SMTP FTP and HTTP
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.
Telnet and FTP

47. A new switch is installed in the Certkiller network. This switch is to be configured so that VLAN information will be automatically distributed to all the other Cisco Catalyst switches in the network. Which of the conditions below have to be met in o
The switch that will share the VLAN information must be in the VTP Server mode. -The switches must be in the same VTP domain. - The switches must be configured to use the same STP version. and The switches must be connected over VLAN trunks.
Fiber optic cable.
Sequence number - Window size - and Acknowledgment number
Certkiller B > trace

48. 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?
Congestion avoidance - Windowing and Buffering
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Show arp and Show interface
Sequence number - Window size - and Acknowledgment number

49. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
Port security
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.
Auto - Desirable - and On
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

50. Certkiller has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
Layer 4
VTP
Switches - Bridges - and Routers
VTP will allow switches to share VLAN configuration information