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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 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
To allow remote management of the switch.
The interfaces must be configured for NAT.
Switches increase the number of collision domains in the network.

2. CDP is being used trhoughout the CK network. What are two reasons why the CK network administrator would use CDP?
CertK Switch(config)# ip default-gateway 192.168.1.115
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 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 hub and A repeater.

3. 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?
The system is malfunctioning.
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.

4. 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 network layer
Encapsulations PPP and authentication CHAP
Fiber optic cable.
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth

5. Which protocol uses TCP port 443 at layer 4?
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
HTTPS
Configure the switch so that it has lower priority than other switches in the network
STP

6. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in the Certkiller LAN?
The Bridgeg ID and The bridge priority
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.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
802.1Q and ISL

7. 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
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.
This is an Ethernet port operating at half duplex
CertK Switch(config)# ip default-gateway 192.168.1.115

8. CK1 is a switch in the Certkiller network. Why will CK1 never learn the broadcast address?
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Duplex mismatch
STP
A broadcast address will never be the source address of a frame

9. 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
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
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
Source Port - Acknowledgment Number - and Window

10. At which layer of the OSI model does the protocol that provides the information displayed by the 'show cdp neighbors' command operate?
Layer 3
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Data link
VTP

11. Which of the following are types of flow control?
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
HTTPS
Data link
Buffering - Cut-through - and Congestion avoidance

12. 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.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Duplex mismatch
Layer 4

13. Which of the following are spanning tree port states?
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
Learning - Listening - and Forwarding
Data link
Certkiller B > trace

14. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
To allow remote management of the switch.
TCP
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Layer 4

15. 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?
MAC Address and Bridge Priority
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.
Layer 3
Duplex mismatch

16. 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
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
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.
Telnet and FTP

17. ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Layer 4
An electrical pulse indicates that the collision has cleared.

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.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
802.3ab and 802.3z
Application
CertK Switch(config)# ip default-gateway 192.168.1.115

19. Which of the following are true of Ethernet technology?
Decrease the window size.
Fiber optic cable.
Hosts use a logical bus topology
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth

20. Which of the protocols below use TCP at the transport layer?
SMTP - FTP - HTTP - and HTTPS
To allow remote management of the switch.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
The port is experiencing errors

21. 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 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.
The Bridgeg ID and The bridge priority
Switches increase the number of collision domains in the network.
The switch will forward the frame to a specific port

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

23. CDP is running between two CK devices. What information is supplied by CDP?
Device Identifiers - Capabilities list - Platform
Data link
The system is malfunctioning.
Application

24. When comparing and contrasting the similarities and differences between bridges and switches - which of the following are valid statements?
Device Identifiers - Capabilities list - Platform
A broadcast address will never be the source address of a frame
The system is malfunctioning.
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.

25. 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?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
The network layer

26. 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?
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.
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Decrease the window size.
It is the sum of the costs based on bandwidth

27. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
802.1Q and ISL
Layer 3
The interfaces must be configured for NAT.
The system is malfunctioning.

28. Which of the following correctly describe steps in the OSI date encapsulation process?
Physical Layer and Datalink 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.
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.

29. 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
Hosts use a logical bus topology
ARP and ICMP
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
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.

30. 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?
Network
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.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Learning - Listening - and Forwarding

31. 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?
All switch and bridge ports are in either the forwarding or blocking state.
Switches increase the number of collision domains in the network.
Physical Layer and Datalink Layer
Congestion avoidance - Windowing and Buffering

32. 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?
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.
Encapsulations PPP and authentication CHAP
VTP will allow switches to share VLAN configuration information
The interfaces must be configured for NAT.

33. 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?
This is an Ethernet port operating at half duplex
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
In an improperly implemented redundant topology
CertK Switch(config)# ip default-gateway 192.168.1.115

34. 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?
Configure the switch so that it has a lower priority than other switches in the network.
Encapsulations PPP and authentication CHAP
ARP and ICMP
To prevent switching loops in networks with redundant switched paths.

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?

36. 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 receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Encapsulations PPP and authentication CHAP
The network layer
Learning - Listening - and Forwarding

37. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
Encapsulations PPP and authentication CHAP
To allow remote management of the switch.
The network layer
VTP

38. You need to perform some initial configuration tasks on a new Certkiller switch. What are the possible trunking modes for this switch port?
Auto - On - and Desirable
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
Congestion avoidance - Windowing and Buffering
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.

39. Which of the following correctly describe the various functions and virtues of a router?
Packet switching - Packet filtering and Internetwork communication.
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
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.
Decrease the window size.

40. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
STP
The switch will forward the frame to a specific port
Decrease the window size.

41. 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?
The switch will forward the frame to a specific port
It operates without collisions and It provides faster data transfer
The port is experiencing errors
A broadcast address will never be the source address of a frame

42. Which of the following services use TCP?
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.
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
To prevent switching loops in networks with redundant switched paths.
SMTP FTP and HTTP

43. 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?
Network
Auto - On - and Desirable
Telnet and FTP
The network layer

44. By default - which of the following factors determines the spanning-tree path cost?
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
100 meters
It is the sum of the costs based on bandwidth
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.

45. What kind of cable should be used to establish a trunked line between two Catalyst switches?
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.
Increased latency and Filtering of all frame errors
Application
A cross-over cable

46. What is the IEEE standard associated with Gigabit Ethernet?
Layer 4
Increased latency and Filtering of all frame errors
Telnet and FTP
802.3ab and 802.3z

47. 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)
Packet switching - Packet filtering and Internetwork communication.
Learning - Listening - and Forwarding
The system is malfunctioning.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

48. 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?
Configure the switch so that it has a lower priority than other switches in the network.
The network layer
Application
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth

49. Two stations on the Certkiller LAN transmit at the same time - resulting in a collision. What happens when a collision occurs on the network?
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
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.
All switch and bridge ports are in either the forwarding or blocking state.
The system is malfunctioning.

50. Which layer of the OSI reference model is responsible for ensuring reliable end to end delivery of data?
Transport
Path selections and Packet switching.
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.
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth