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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. 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?
The port is experiencing errors
Switches increase the number of collision domains in the network.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
TCP

2. You need to perform some initial configuration tasks on a new Certkiller switch. What are the possible trunking modes for this switch port?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Auto - On - and Desirable
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
Device Identifiers - Capabilities list - Platform

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?
Switches increase the number of collision domains in the network.
Device Identifiers - Capabilities list - Platform
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Configure the switch so that it has lower priority than other switches in the network

4. What is the IEEE standard associated with Gigabit Ethernet?
802.3ab and 802.3z
Port security
SMTP - FTP - HTTP - and HTTPS
It is the sum of the costs based on bandwidth

5. With regard to Ethernet media access methods - which of the following are true?
Network
Application
802.1Q and ISL
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.

6. 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.
All switch and bridge ports are in either the forwarding or blocking state.
A broadcast address will never be the source address of a frame
Switches - Bridges - and Routers

7. 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.
In an improperly implemented redundant topology
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
SMTP FTP and HTTP

8. 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 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.
HTTPS
The network layer
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.

9. Which Layer 4 protocol is used for a Telnet connections between two CK routers?
TCP
An electrical pulse indicates that the collision has cleared.
Switches increase the number of collision domains in the network.
It is used to prevent switching loops in networks with redundant switched routes.

10. 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)
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Buffering - Cut-through - and Congestion avoidance
100 meters
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

11. When comparing and contrasting the similarities and differences between bridges and switches - which of the following are valid statements?
A cross-over cable
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.
The network layer

12. 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?
Switches increase the number of collision domains in the network.
Physical Layer and Datalink Layer
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.
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

13. 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
Duplex mismatch
Sequence number - Window size - and Acknowledgment number
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
The interfaces must be configured for NAT.

14. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
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.
Network
MAC Address and Bridge Priority
802.1Q and ISL

15. 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.
VLAN and Swtich
Encapsulations PPP and authentication CHAP
An electrical pulse indicates that the collision has cleared.

16. 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
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Sequence number - Window size - and Acknowledgment number
CertK Switch(config)# ip default-gateway 192.168.1.115

17. 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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18. Which OSI layer header contains the address of a destination host that is on another network?
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Fiber optic cable.
TCP
Network

19. 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
SMTP - FTP - HTTP - and HTTPS
SMTP FTP and HTTP
Layer 4

20. 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?
MAC Address and Bridge Priority
Layer 3
Configure the switch so that it has a lower priority than other switches in the 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

21. 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?
802.3ab and 802.3z
VLAN and Swtich
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.

22. 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?
Path selections and Packet switching.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
An additional broadcast domain will be created.
ARP and ICMP

23. What are two characteristics of 'store and forward' switching?
Duplex mismatch
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
A broadcast address will never be the source address of a frame

24. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Telnet and FTP
Source Port - Acknowledgment Number - and Window
Packet switching - Packet filtering and Internetwork communication.

25. 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?
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Data link
Port security
Switches increase the number of collision domains in the network.

26. 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
All switch and bridge ports are in either the forwarding or blocking state.
The sequence number in the TCP header.
Certkiller B > trace
HTTPS - SMTP - and TFTP

27. Which fields are included in the TCP header?
A broadcast address will never be the source address of a frame
802.3ab and 802.3z
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

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?
The switch will forward the frame to a specific port
SMTP - FTP - HTTP - and HTTPS
A broadcast address will never be the source address of a frame
802.3ab and 802.3z

29. Which two of the following values does STP take into consideration when it elects the root bridge?
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 Bridgeg ID and The bridge priority
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 switch will forward the frame to a specific port

30. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Layer 4
Port security
Telnet and FTP

31. 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.
It is used to prevent switching loops in networks with redundant switched routes.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
SMTP - FTP - HTTP - and HTTPS

32. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
Auto - On - and Desirable
In an improperly implemented redundant topology
Serial0/1 is down - line protocol is down
Encapsulations PPP and authentication CHAP

33. Cisco is the leader in the router market space. What basic functions do their routers perform in a network?
Network
A broadcast address will never be the source address of a frame
Path selections and Packet switching.
Transport

34. Which of the following are types of flow control?
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Buffering - Cut-through - and Congestion avoidance
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

35. 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 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.
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 increase the number of collision domains in the network.
Application

36. 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
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Fiber optic cable.
ARP and ICMP
Layer 3

37. 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.)
MAC Address and Bridge Priority
802.1Q and ISL
This is an Ethernet port operating at half duplex
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.

38. 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
Switches increase the number of collision domains in the network.
Certkiller B > trace
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.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

39. Which three of the protocols below belong to the application layer? (Select three answer choices)
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.
Duplex mismatch
STP
HTTPS - SMTP - and TFTP

40. 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?
All switch and bridge ports are in either the forwarding or blocking state.
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
The interfaces must be configured for NAT.

41. 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
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.
VLAN and Swtich
Packet switching - Packet filtering and Internetwork communication.
Layer 4

42. 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 port is experiencing errors
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.
Network

43. What kind of cable should be used to establish a trunked line between two Catalyst switches?
Show cdp neighbor detail
A cross-over cable
It is used to prevent switching loops in networks with redundant switched routes.
The network layer

44. 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?
A hub and A repeater.
An additional broadcast domain will be created.
The switch will forward the frame to a specific port
Switches - Bridges - and Routers

45. At which layer of the OSI model does the protocol that provides the information displayed by the 'show cdp neighbors' command operate?
802.1Q and ISL
The sequence number in the TCP header.
TCP
Data link

46. 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
Certkiller B > trace
Switches increase the number of collision domains in the network.
Duplex mismatch

47. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
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.
Port security
Network
Configure the switch so that it has lower priority than other switches in the network

48. 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?
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.
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Hosts use a logical bus topology

49. 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
Network
Network
Duplex mismatch

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?
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.
It will prevent segment 1's broadcasts from getting to segment 2.
The Bridgeg ID and The 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.