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. 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)
In an improperly implemented redundant topology
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
The system is malfunctioning.
ARP and ICMP

2. 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.
Port security
Layer 4
In an improperly implemented redundant topology

3. What are two characteristics of 'store and forward' switching?
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
The interfaces must be configured for NAT.
The system is malfunctioning.
The Bridgeg ID and The bridge priority

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

5. 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?
Physical Layer and Datalink Layer
CertK Switch(config)# ip default-gateway 192.168.1.115
Switches - Bridges - and Routers
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth

6. 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 will prevent segment 1's broadcasts from getting to segment 2.
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
802.1Q and ISL

7. 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.
Learning - Listening - and Forwarding
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
ARP and ICMP

8. 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
Packet switching - Packet filtering and Internetwork communication.
Switches - Bridges - and Routers
The sequence number in the TCP header.
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.

9. 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?
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.
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
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.

10. 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
SMTP - FTP - HTTP - and HTTPS
Sequence number - Window size - and Acknowledgment number
Hosts use a logical bus topology

11. 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?
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Layer 4
Decrease the window size.
Switches increase the number of collision domains in the network.

12. 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?
Switches increase the number of collision domains in the network.
HTTPS
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
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.

13. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
STP
SMTP FTP and HTTP
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.
Information about a route should never be sent back in the direction from which the original update came.

14. 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
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Fiber optic cable.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Duplex mismatch

15. While troubleshooting an issue in the Certkiller LAN you notice that a network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement - What is known about the network interface port?
Layer 4
Show arp and Show interface
100 meters
This is an Ethernet port operating at half duplex

16. 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?
Physical Layer and Datalink Layer
Network
The network layer
802.1Q and ISL

17. ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets?
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
802.3ab and 802.3z
The port is experiencing errors
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.

18. Which of the following are true of Ethernet technology?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Data link
Hosts use a logical bus topology
Transport

19. 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?
The sequence number in the TCP header.
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.
Auto - Desirable - and On

20. 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
Fiber optic cable.
Source Port - Acknowledgment Number - and Window
The port is experiencing errors

21. 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?
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
The network layer
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

22. Which of the following devices can the Certkiller network administrator use to segment the LAN?
STP
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Switches - Bridges - and Routers
VLAN and Swtich

23. Which one of the following characterisitcs is true regardigin the use of the hubs and switches?
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Switches increase the number of collision domains in the network.
The Bridgeg ID and The bridge priority
100 meters

24. Which protocol uses TCP port 443 at layer 4?
Congestion avoidance - Windowing and Buffering
HTTPS
Port security
CertK Switch(config)# ip default-gateway 192.168.1.115

25. 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?
802.1Q and ISL
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
The Bridgeg ID and The bridge priority
Packet switching - Packet filtering and Internetwork communication.

26. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
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
Switches increase the number of collision domains in the network.
Show arp and Show interface
Auto - Desirable - and On

27. What is the IEEE standard associated with Gigabit Ethernet?
STP
802.3ab and 802.3z
VLAN and Swtich
Configure the switch so that it has lower priority than other switches in the network

28. 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?
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Show arp and Show interface
The switch will forward the frame to a specific port
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

29. 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
Configure the switch so that it has lower priority than other switches in the network
Buffering - Cut-through - and Congestion avoidance
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.

30. 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
An additional broadcast domain will be created.
Congestion avoidance - Windowing and Buffering
802.1Q and ISL

31. 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.
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
MAC Address and Bridge Priority
Telnet and FTP

32. 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?
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
Certkiller B > trace
Configure the switch so that it has a lower priority than other switches in the network.
Show arp and Show interface

33. Which of the following can lead to the contribution of LAN traffic congestion?
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
It is the sum of the costs based on bandwidth
An additional broadcast domain will be created.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth

34. 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
Configure the switch so that it has a lower priority than other switches in the network.
VLAN and Swtich
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.
Congestion avoidance - Windowing and Buffering

35. 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 sequence number in the TCP header.
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Telnet and FTP
VTP

36. 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?
The system is malfunctioning.
Application
The network layer
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

37. Cisco is the leader in the router market space. What basic functions do their routers perform in a network?
Path selections and Packet switching.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
100 meters
Layer 4

38. 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.
The switch will forward the frame to a specific port
Application
Port security
HTTPS

39. 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?
Telnet and FTP
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Fiber optic cable.
Increased latency and Filtering of all frame errors

40. 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
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 sequence number in the TCP header.
Switches increase the number of collision domains in the network.

41. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
The system is malfunctioning.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Configure the switch so that it has a lower priority than other switches in the network.
Show cdp neighbor detail

42. 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?
To prevent switching loops in networks with redundant switched paths.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Physical Layer and Datalink Layer
HTTPS

43. Which of the protocols below use TCP at the transport layer?
Sequence number - Window size - and Acknowledgment number
In an improperly implemented redundant topology
Application
SMTP - FTP - HTTP - and HTTPS

44. CDP is running between two CK devices. What information is supplied by CDP?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Device Identifiers - Capabilities list - Platform
Auto - Desirable - and On
ARP and ICMP

45. Which of the following correctly describe the various functions and virtues of a router?
To prevent switching loops in networks with redundant switched paths.
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
802.3ab and 802.3z
Packet switching - Packet filtering and Internetwork communication.

46. 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?
Show cdp neighbor detail
The system is malfunctioning.
The interfaces must be configured for NAT.
The network layer

47. You want to influence the root bridge selection within the Certkiller LAN. Which two values are used by spanning tree protocol to elect a root bridge? (Choose two.)
Path selections and Packet switching.
Information about a route should never be sent back in the direction from which the original update came.
MAC Address and Bridge Priority
It is used to prevent switching loops in networks with redundant switched routes.

48. 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?
Sequence number - Window size - and Acknowledgment number
ARP and ICMP
A hub and A repeater.
Auto - On - and Desirable

49. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
It operates without collisions and It provides faster data transfer
The interfaces must be configured for NAT.
Layer 4
The network layer

50. Two stations on the Certkiller LAN transmit at the same time - resulting in a collision. What happens when a collision occurs on the network?
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Layer 4
Network
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.