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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. You need to perform some initial configuration tasks on a new Certkiller switch. What are the possible trunking modes for this switch port?
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.
Auto - On - and Desirable
Configure the switch so that it has lower priority than other switches in the 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.

2. At which layer of the OSI model does the protocol that provides the information displayed by the 'show cdp neighbors' command operate?
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.
Data link
VTP will allow switches to share VLAN configuration information
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.

3. 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?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
It operates without collisions and It provides faster data transfer
Switches - Bridges - and Routers

4. Why is full-duplex Ethernet superior to its single-duplex counterpart?
Path selections and Packet switching.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Physical Layer and Datalink Layer
It operates without collisions and It provides faster data transfer

5. 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 uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
A cross-over cable
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
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

6. Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet?
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
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.
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
In an improperly implemented redundant topology

7. CK1 is a switch in the Certkiller network. Why will CK1 never learn the broadcast address?
Transport
Serial0/1 is down - line protocol is down
Source Port - Acknowledgment Number - and Window
A broadcast address will never be the source address of a frame

8. 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?
Configure the switch so that it has lower priority than other switches in the network
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
Increased latency and Filtering of all frame errors
ARP and ICMP

9. 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
Configure the switch so that it has a lower priority than other switches in the network.
Layer 4
It will prevent segment 1's broadcasts from getting to segment 2.

10. 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?
An electrical pulse indicates that the collision has cleared.
It is used to prevent switching loops in networks with redundant switched routes.
Configure the switch so that it has a lower priority than other switches in the network.
Packet switching - Packet filtering and Internetwork communication.

11. 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?
An additional broadcast domain will be created.
The interfaces must be configured for NAT.
The port is experiencing errors
Application

12. Which protocol uses TCP port 443 at layer 4?
Decrease the window size.
Buffering - Cut-through - and Congestion avoidance
HTTPS
The system is malfunctioning.

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

14. 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)
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same 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.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
A broadcast address will never be the source address of a frame

15. Two stations on the Certkiller LAN transmit at the same time - resulting in a collision. What happens when a collision occurs on 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
100 meters
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.
SMTP - FTP - HTTP - and HTTPS

16. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
Learning - Listening - and Forwarding
Encapsulations PPP and authentication CHAP
Data link
The switch will forward the frame to a specific port

17. Certkiller has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
VTP will allow switches to share VLAN configuration information
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 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.

18. 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.
Application
VLAN and Swtich
SMTP FTP and HTTP
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

19. 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.
VTP will allow switches to share VLAN configuration information
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

20. CDP is running between two CK devices. What information is supplied by CDP?
Switches increase the number of collision domains in the network.
An additional broadcast domain will be created.
The Bridgeg ID and The bridge priority
Device Identifiers - Capabilities list - Platform

21. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
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
Layer 4
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
STP

22. 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?
Device Identifiers - Capabilities list - Platform
The interfaces must be configured for NAT.
The network layer
Physical Layer and Datalink Layer

23. Which of the following are spanning tree port states?
A hub and A repeater.
Learning - Listening - and Forwarding
VLAN and Swtich
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.

24. 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
Layer 3
Learning - Listening - and Forwarding
802.3ab and 802.3z
Show arp and Show interface

25. 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?
Application
Show cdp neighbor detail
The network layer
100 meters

26. Which of the following can lead to the contribution of LAN traffic congestion?
Path selections and Packet switching.
It is the sum of the costs based on bandwidth
Port security
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth

27. 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?
Port security
It will prevent segment 1's broadcasts from getting to segment 2.
VTP
Application

28. 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 cross-over cable
The network layer
A hub and A repeater.
The system is malfunctioning.

29. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
The system is malfunctioning.
Information about a route should never be sent back in the direction from which the original update came.
Port security
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

30. 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?
Congestion avoidance - Windowing and Buffering
An additional broadcast domain will be created.
SMTP - FTP - HTTP - and HTTPS
Show cdp neighbor detail

31. Which fields are included in the TCP header?
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
Source Port - Acknowledgment Number - and Window
SMTP FTP and HTTP
CertK Switch(config)# ip default-gateway 192.168.1.115

32. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
802.1Q and ISL
The network layer
Path selections and Packet switching.
The network layer

33. 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
To allow remote management of the switch.
It is the sum of the costs based on bandwidth
An additional broadcast domain will be created.

34. In a switched LAN network - What is the Spanning-Tree algorithm used for?
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
It is used to prevent switching loops in networks with redundant switched routes.
HTTPS - SMTP - and TFTP
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

35. Which layer of the OSI reference model is responsible for ensuring reliable end to end delivery of data?
SMTP FTP and HTTP
SMTP - FTP - HTTP - and HTTPS
Show arp and Show interface
Transport

36. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
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.
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Learning - Listening - and Forwarding
Switches increase the number of collision domains in the network.

37. 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?
Encapsulations PPP and authentication CHAP
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.
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

38. What is the IEEE standard associated with Gigabit Ethernet?
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
802.3ab and 802.3z
Increased latency and Filtering of all frame errors
Serial0/1 is down - line protocol is down

39. 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?
Certkiller B > trace
The port is experiencing errors
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

40. 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?
The network layer
Data link
Telnet and FTP
Hosts use a logical bus topology

41. 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
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
VLAN and Swtich
A hub and A repeater.

42. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in the Certkiller LAN?
In an improperly implemented redundant topology
VTP will allow switches to share VLAN configuration information
Switches increase the number of collision domains in the network.
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.

43. 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?
Network
VTP will allow switches to share VLAN configuration information
All switch and bridge ports are in either the forwarding or blocking state.
Certkiller B > trace

44. 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
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.
All switch and bridge ports are in either the forwarding or blocking state.
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.

45. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
Layer 4
Physical Layer and Datalink Layer
Learning - Listening - and Forwarding
Port security

46. 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?
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Learning - Listening - and Forwarding
MAC Address and Bridge Priority
The network layer

47. You want to upgrade the Certkiller LAN so that all ports operate in full duplex mode. Which statement is true about full-duplex Ethernet when comparing to half-duplex Ethernet?
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
100 meters
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
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.

48. Which of the protocols below use TCP at the transport layer?
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.
Show arp and Show interface
SMTP - FTP - HTTP - and HTTPS
An additional broadcast domain will be created.

49. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
Duplex mismatch
STP
Hosts use a logical bus topology
Network

50. By default - which of the following factors determines the spanning-tree path cost?
Physical Layer and Datalink Layer
It is the sum of the costs based on bandwidth
In an improperly implemented redundant topology
Switches increase the number of collision domains in the network.