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. Which of the following can lead to the contribution of LAN traffic congestion?
The interfaces must be configured for NAT.
The network layer
Application
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth

2. What kind of cable should be used to establish a trunked line between two Catalyst switches?
A cross-over cable
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
The network layer

3. What is the purpose of the spanning-tree algorithm in a switched LAN?
Transport
To prevent switching loops in networks with redundant switched paths.
Information about a route should never be sent back in the direction from which the original update came.
Switches increase the number of collision domains in the network.

4. A Certkiller switch is configured with all ports assigned to VLAN 2. In addition - all ports are configured as full-duplex FastEthernet. What is the effect of adding switch ports to a new VLAN on this switch?
An additional broadcast domain will be created.
It operates without collisions and It provides faster data transfer
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 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.

5. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
The interfaces must be configured for NAT.
Increased latency and Filtering of all frame errors
STP
Port security

6. 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?
A hub and A repeater.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
The interfaces must be configured for NAT.
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.

7. Which fields are included in the TCP header?
VTP
A broadcast address will never be the source address of a frame
It is used to prevent switching loops in networks with redundant switched routes.
Source Port - Acknowledgment Number - and Window

8. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
Learning - Listening - and Forwarding
Network
SMTP - FTP - HTTP - and HTTPS
It operates without collisions and It provides faster data transfer

9. Certkiller has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
The system is malfunctioning.
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
VTP will allow switches to share VLAN configuration information

10. when files are transferred between a host and an FTP server - the data is divided into smaller pieces of transmission. As these pieces arrive at the destination host they must be reassembled to reconstruct the original file. What provides for the rea
The sequence number in the TCP header.
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
The Bridgeg ID and The bridge priority
In an improperly implemented redundant topology

11. While troubleshooting a connectivity problem on the network - you issure the ping command from your PC command prompt - but the output shows 'request times out' At which OSI layer is this problem associated with?
Transport
The network layer
ARP and ICMP
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.

12. 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?
Layer 3
Application
VTP
Packet switching - Packet filtering and Internetwork communication.

13. 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?
Auto - On - and Desirable
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
Buffering - Cut-through - and Congestion avoidance
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. Split horizon has been enabled within the Certkiller routed network. Which one of the following statements best explains the split horizon rule?
Information about a route should never be sent back in the direction from which the original update came.
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
100 meters
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.

15. 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?
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
Physical Layer and Datalink Layer
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 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.

16. You need to configure two Certkiller switches to exchange VLAN information. Which protocol provides a method of sharing VLAN configuration information between these two switches?
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
VTP
It is used to prevent switching loops in networks with redundant switched routes.

17. Certkiller users have noticed extremely slow network performance - intermittent connectivity - and connection losses. After entering the 'show interfaces' command - you notice that the Ethernet interface is configured as 100 Mbps full-duplex and that
Physical Layer and Datalink Layer
Duplex mismatch
Fiber optic cable.
VTP will allow switches to share VLAN configuration information

18. Which of the following are spanning tree port states?
Learning - Listening - and Forwarding
HTTPS - SMTP - and TFTP
Duplex mismatch
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

19. 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
It operates without collisions and It provides faster data transfer
The network layer
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.
Buffering - Cut-through - and Congestion avoidance

20. A network administrator wants to control which user hosts can access the network based on their MAC address. What will prevent workstations with unauthorized MAC addresses from connecting to the network through a switch?
Port security
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
STP
Buffering - Cut-through - and Congestion avoidance

21. Although TCP segments are similar to UDP segments - TCP packets contains some additional fields. Which of the following are found in a TCP header - but not in a UDP header?
TCP
Sequence number - Window size - and Acknowledgment number
A broadcast address will never be the source address of a frame
CertK Switch(config)# ip default-gateway 192.168.1.115

22. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
Data link
The system is malfunctioning.
All switch and bridge ports are in either the forwarding or blocking state.
Auto - On - and Desirable

23. In a switched LAN network - What is the Spanning-Tree algorithm used for?
It is the sum of the costs based on bandwidth
Show arp and Show interface
802.3ab and 802.3z
It is used to prevent switching loops in networks with redundant switched routes.

24. 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?
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Source Port - Acknowledgment Number - and Window
Telnet and FTP
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

25. 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?
Encapsulations PPP and authentication CHAP
Congestion avoidance - Windowing and Buffering
Packet switching - Packet filtering and Internetwork communication.
Physical Layer and Datalink Layer

26. Which IOS user EXEC command will allow a network technician to determine which router in the path to an unreachable network host should be examined more closely for the cause of the network failure?
Layer 4
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
Port security
Certkiller B > trace

27. Which two statements describe the operation of the CSMA/CD access method - which is in use on the Certkiller network?
Increased latency and Filtering of all frame errors
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
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Auto - On - and Desirable

28. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in the Certkiller LAN?
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
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.
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.
An electrical pulse indicates that the collision has cleared.

29. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
Information about a route should never be sent back in the direction from which the original update came.
The sequence number in the TCP header.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
Encapsulations PPP and authentication CHAP

30. 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?
An additional broadcast domain will be created.
100 meters
Congestion avoidance - Windowing and Buffering
Layer 3

31. Two buildings on the London campus of a CK corporation must be connected to use Ethernet with a bandwidth of at least 100 Mbps. CK is concerned about possible problems from voltage potential differences between the two buldings. Which media type shou
The Bridgeg ID and The bridge priority
It is used to prevent switching loops in networks with redundant switched routes.
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Fiber optic cable.

32. CK1 is a switch in the Certkiller network. Why will CK1 never learn the broadcast address?
MAC Address and Bridge Priority
Learning - Listening - and Forwarding
SMTP - FTP - HTTP - and HTTPS
A broadcast address will never be the source address of a frame

33. With regard to Ethernet media access methods - which of the following are true?
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.
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.
SMTP FTP and HTTP
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth

34. Two stations on the Certkiller LAN transmit at the same time - resulting in a collision. What happens when a collision occurs on the network?
802.3ab and 802.3z
MAC Address and Bridge Priority
Show cdp neighbor detail
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.

35. Which OSI layer header contains the address of a destination host that is on another network?
The Bridgeg ID and The bridge priority
Auto - On - and Desirable
802.1Q and ISL
Network

36. 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
Layer 4
VLAN and Swtich
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
HTTPS - SMTP - and TFTP

37. 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

38. The Certkiller LAN is upgrading all devices to operate in full duplex. Which statement is true about full-duplex Ethernet in comparison to half-duplex Ethernet?
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Show cdp neighbor detail
It will prevent segment 1's broadcasts from getting to segment 2.

39. As a Certkiller trainee you are required to set the default gateway on a Cisco switch to the IP address of 192.168.1.115. Which IOS command should you use?
Fiber optic cable.
CertK Switch(config)# ip default-gateway 192.168.1.115
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
The switch will forward the frame to a specific port

40. 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
Network
Configure the switch so that it has a lower priority than other switches in the network.
Transport
Show arp and Show interface

41. Why is full-duplex Ethernet superior to its single-duplex counterpart?
It operates without collisions and It provides faster data transfer
Auto - On - and Desirable
Configure the switch so that it has a lower priority than other switches in the network.
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.

42. 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 switch will forward the frame to a specific port
TCP
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.

43. Which of the following are true of Ethernet technology?
100 meters
Hosts use a logical bus topology
An electrical pulse indicates that the collision has cleared.
Application

44. 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.
Hosts use a logical bus topology
Certkiller B > trace
Information about a route should never be sent back in the direction from which the original update came.

45. While troubleshooting a connectivity problem - the Certkiller network administrator notices that a port status LED on a Cisco Catalyst Series switch is alternating between green and amber. Which condition could this indicate?
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
The port is experiencing errors
A cross-over cable
Fiber optic cable.

46. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Auto - Desirable - and On
Source Port - Acknowledgment Number - and Window
Buffering - Cut-through - and Congestion avoidance

47. What is the IEEE standard associated with Gigabit Ethernet?
Layer 4
The interfaces must be configured for NAT.
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
802.3ab and 802.3z

48. 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?
Switches increase the number of collision domains in the network.
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
An electrical pulse indicates that the collision has cleared.
Configure the switch so that it has lower priority than other switches in the network

49. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
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.
To allow remote management of the switch.
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Source Port - Acknowledgment Number - and Window

50. The Certkiller network administrator wants to use a router named CK1 to segment the local network. What are some of the advantages of using CK1 to segment the network? (Choose two)
Serial0/1 is down - line protocol is down
Physical Layer and Datalink Layer
Configure the switch so that it has lower priority than other switches in the network
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router