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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 two statements describe the operation of the CSMA/CD access method - which is in use on the Certkiller network?
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.
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
VTP will allow switches to share VLAN configuration information
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.

2. Which of the following are true of Ethernet technology?
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.
Hosts use a logical bus topology
An additional broadcast domain will be created.
ARP and ICMP

3. 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?
SMTP - FTP - HTTP - and HTTPS
100 meters
The port is experiencing errors
Increased latency and Filtering of all frame errors

4. In a switched LAN network - What is the Spanning-Tree algorithm used for?
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
It is used to prevent switching loops in networks with redundant switched routes.
To prevent switching loops in networks with redundant switched paths.
HTTPS

5. Which of the following services use TCP?
Application
SMTP FTP and HTTP
Network
An electrical pulse indicates that the collision has cleared.

6. You download a file from an FTP site on the Internet. What is the highest layer in the OSI model used in this FTP operations?
Application
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Packet switching - Packet filtering and Internetwork communication.
The interfaces must be configured for NAT.

7. 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?
Application
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
Layer 3
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth

8. 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
VTP will allow switches to share VLAN configuration information
802.3ab and 802.3z
A broadcast address will never be the source address of a frame

9. 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)
100 meters
The switch will forward the frame to a specific port
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
SMTP FTP and HTTP

10. Two stations on the Certkiller LAN transmit at the same time - resulting in a collision. What happens when a collision occurs on the network?
VLAN and Swtich
It is used to prevent switching loops in networks with redundant switched routes.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
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.

11. 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?
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.
A hub and A repeater.
Increased latency and Filtering of all frame errors
Certkiller B > trace

12. 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 switch will forward the frame to a specific port
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
Source Port - Acknowledgment Number - and Window
The network layer

13. 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?
Hosts use a logical bus topology
Sequence number - Window size - and Acknowledgment number
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.
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.

14. Which of the protocols below use TCP at the transport layer?
SMTP - FTP - HTTP - and HTTPS
CertK Switch(config)# ip default-gateway 192.168.1.115
A broadcast address will never be the source address of a frame
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.

15. 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?
Show cdp neighbor detail
Switches increase the number of collision domains in the network.
Increased latency and Filtering of all frame errors
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

16. Which layer of the OSI reference model is responsible for ensuring reliable end to end delivery of data?
Transport
Duplex mismatch
VLAN and Swtich
The port is experiencing errors

17. Which of the following correctly describe steps in the OSI date encapsulation process?
The network layer
CertK Switch(config)# ip default-gateway 192.168.1.115
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.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

18. 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?
It is used to prevent switching loops in networks with redundant switched routes.
Fiber optic cable.
MAC Address and Bridge Priority
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.

19. What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?
Encapsulations PPP and authentication CHAP
All switch and bridge ports are in either the forwarding or blocking state.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Telnet and FTP

20. 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?
ARP and ICMP
Path selections and Packet switching.
Physical Layer and Datalink Layer
It operates without collisions and It provides faster data transfer

21. Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet?
An electrical pulse indicates that the collision has cleared.
A hub and A repeater.
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
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

22. On a half-duplex Ethernet LAN - two hosts attempt to send data simultaneously - resulting in a collision. Following this collision - what will the hosts do?
Application
Encapsulations PPP and authentication CHAP
Packet switching - Packet filtering and Internetwork communication.
An electrical pulse indicates that the collision has cleared.

23. 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?
TCP
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
802.1Q and ISL
ARP and ICMP

24. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
In an improperly implemented redundant topology
Device Identifiers - Capabilities list - Platform
It is the sum of the costs based on bandwidth
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. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
HTTPS
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Information about a route should never be sent back in the direction from which the original update came.
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

26. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
The system is malfunctioning.
Transport
802.3ab and 802.3z
Encapsulations PPP and authentication CHAP

27. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
Switches increase the number of collision domains in the network.
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
Layer 4
VLAN and Swtich

28. 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?

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29. 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?
Application
Show arp and Show interface
Auto - On - and Desirable
An additional broadcast domain will be created.

30. 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?
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.
To allow remote management of the switch.
Source Port - Acknowledgment Number - and Window
Port security

31. 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?
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
Application
Switches increase the number of collision domains in the network.
Duplex mismatch

32. Which three of the protocols below belong to the application layer? (Select three answer choices)
HTTPS - SMTP - and TFTP
Device Identifiers - Capabilities list - Platform
Application
100 meters

33. Which of the following are spanning tree port states?
Sequence number - Window size - and Acknowledgment number
Learning - Listening - and Forwarding
Source Port - Acknowledgment Number - and Window
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.

34. 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
A cross-over cable
VTP
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.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

35. Which fields are included in the TCP header?
The network layer
Source Port - Acknowledgment Number - and Window
The sequence number in the TCP header.
Layer 4

36. Acknowledgements - sequencing - and flow control are functions that are handled by which layer of the OSI model?
Certkiller B > trace
Layer 4
Path selections and Packet switching.
Decrease the window size.

37. What is the purpose of the spanning-tree algorithm in a switched LAN?
Packet switching - Packet filtering and Internetwork communication.
To prevent switching loops in networks with redundant switched paths.
The network layer
Telnet and FTP

38. 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
Certkiller B > trace
The sequence number in the TCP header.
It will prevent segment 1's broadcasts from getting to segment 2.
Network

39. What are two characteristics of 'store and forward' switching?
Path selections and Packet switching.
Encapsulations PPP and authentication CHAP
Learning - Listening - and Forwarding
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

40. 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
A hub and A repeater.
TCP
Show cdp neighbor detail

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

42. 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?
The network layer
Show arp and Show interface
A broadcast address will never be the source address of a frame
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

43. Why is full-duplex Ethernet superior to its single-duplex counterpart?
Telnet and FTP
To prevent switching loops in networks with redundant switched paths.
It operates without collisions and It provides faster data transfer
Show cdp neighbor detail

44. 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?
Certkiller B > trace
The network layer
Show cdp neighbor detail
STP

45. By default - which of the following factors determines the spanning-tree path cost?
Increased latency and Filtering of all frame errors
Buffering - Cut-through - and Congestion avoidance
It is the sum of the costs based on bandwidth
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

46. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
Encapsulations PPP and authentication CHAP
Fiber optic cable.
Network
Auto - On - and Desirable

47. 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?
The system is malfunctioning.
VTP
A cross-over cable
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

48. When you compare the differences between half-duplex and full-duplex Ethernet - which of the following characteristics are exclusive to half-duplex?
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Switches - Bridges - and Routers
SMTP - FTP - HTTP - and HTTPS
Fiber optic cable.

49. What kind of cable should be used to establish a trunked line between two Catalyst switches?
Packet switching - Packet filtering and Internetwork communication.
A cross-over cable
Switches increase the number of collision domains in the network.
A hub and A repeater.

50. Which two of the following values does STP take into consideration when it elects the root bridge?
The network layer
Port security
This is an Ethernet port operating at half duplex
The Bridgeg ID and The bridge priority