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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 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.
All switch and bridge ports are in either the forwarding or blocking state.
Transport
The port is experiencing errors
Application

2. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
Network
In an improperly implemented redundant topology
STP
Port security

3. 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
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
It is the sum of the costs based on bandwidth
MAC Address and Bridge Priority

4. 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
Decrease the window size.
SMTP - FTP - HTTP - and HTTPS
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.

5. 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?
Network
Device Identifiers - Capabilities list - Platform
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.

6. Which of the following devices can the Certkiller network administrator use to segment the 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 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
HTTPS

7. 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?
A hub and A repeater.
Congestion avoidance - Windowing and Buffering
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.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

8. What are two characteristics of 'store and forward' switching?
Auto - Desirable - and On
Data link
In an improperly implemented redundant topology
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

9. 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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10. 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
Fiber optic cable.
Layer 3
Layer 4

11. 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
To allow remote management of the switch.
Network
In an improperly implemented redundant topology

12. Certkiller has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
Network
The interfaces must be configured for NAT.
VTP will allow switches to share VLAN configuration information
Configure the switch so that it has a lower priority than other switches in the network.

13. 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?
Layer 3
An additional broadcast domain will be created.
Layer 4
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

14. Which of the following services use TCP?
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.
Certkiller B > trace
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
SMTP FTP and HTTP

15. 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?
Transport
Port security
Network
The Bridgeg ID and The bridge priority

16. Which of the following are spanning tree port states?
The switch will forward the frame to a specific port
Learning - Listening - and Forwarding
100 meters
Encapsulations PPP and authentication CHAP

17. 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?
In an improperly implemented redundant topology
VTP
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

18. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in 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.
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
Increased latency and Filtering of all frame errors
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

19. At which layer of the OSI model does the protocol that provides the information displayed by the 'show cdp neighbors' command operate?
Data link
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 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
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth

20. 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.
SMTP FTP and HTTP
VTP
Sequence number - Window size - and Acknowledgment number

21. Which protocol uses TCP port 443 at layer 4?
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
HTTPS
Application
Increased latency and Filtering of all frame errors

22. 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.
Data link
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

23. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
Auto - Desirable - and On
Switches increase the number of collision domains in the network.
SMTP - FTP - HTTP - and HTTPS
The network layer

24. Two stations on the Certkiller LAN transmit at the same time - resulting in a collision. What happens when a collision occurs on the network?
Application
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 will prevent segment 1's broadcasts from getting to segment 2.
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.

25. Which of the protocols below use TCP at the transport layer?
Telnet and FTP
The network layer
Transport
SMTP - FTP - HTTP - and HTTPS

26. 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?
Congestion avoidance - Windowing and Buffering
Telnet and FTP
The switch will forward the frame to a specific port
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.

27. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
Auto - Desirable - and On
In an improperly implemented redundant topology
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
SMTP - FTP - HTTP - and HTTPS

28. Which of the following correctly describe the various functions and virtues of a router?
MAC Address and Bridge Priority
Certkiller B > trace
The Bridgeg ID and The bridge priority
Packet switching - Packet filtering and Internetwork communication.

29. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
It is used to prevent switching loops in networks with redundant switched routes.
Auto - On - and Desirable
Encapsulations PPP and authentication CHAP
Switches - Bridges - and Routers

30. 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 port is experiencing errors
Show arp and Show interface
SMTP FTP and HTTP
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth

31. With regard to Ethernet media access methods - which of the following are true?
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 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.
Layer 3
Layer 4

32. Cisco is the leader in the router market space. What basic functions do their routers perform in a network?
Path selections and Packet switching.
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.
Hosts use a logical bus topology
HTTPS - SMTP - and TFTP

33. 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
VLAN and Swtich
Switches - Bridges - and Routers
SMTP - FTP - HTTP - and HTTPS
Physical Layer and Datalink Layer

34. 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
Configure the switch so that it has lower priority than other switches in the network
The sequence number in the TCP header.
Buffering - Cut-through - and Congestion avoidance
It will prevent segment 1's broadcasts from getting to segment 2.

35. What kind of cable should be used to establish a trunked line between two Catalyst switches?
100 meters
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
All switch and bridge ports are in either the forwarding or blocking state.
A cross-over cable

36. 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
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.
Decrease the window size.
Sequence number - Window size - and Acknowledgment number

37. Which of the following are types of flow control?
It will prevent segment 1's broadcasts from getting to segment 2.
This is an Ethernet port operating at half duplex
Buffering - Cut-through - and Congestion avoidance
CertK Switch(config)# ip default-gateway 192.168.1.115

38. Which layer of the OSI reference model is responsible for ensuring reliable end to end delivery of data?
VTP
Transport
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
The system is malfunctioning.

39. Split horizon has been enabled within the Certkiller routed network. Which one of the following statements best explains the split horizon rule?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
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.
SMTP FTP and HTTP
Information about a route should never be sent back in the direction from which the original update came.

40. 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.)
Increased latency and Filtering of all frame errors
Encapsulations PPP and authentication CHAP
Switches - Bridges - and Routers
MAC Address and Bridge Priority

41. Some of the older Certkiller switches store the entire frame before forwarding it to the destination. What are two effects on network performance of configuring a switch to do this?
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Increased latency and Filtering of all frame errors
A broadcast address will never be the source address of a frame
Learning - Listening - and Forwarding

42. CDP is being used trhoughout the CK network. What are two reasons why the CK network administrator would use CDP?
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
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.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
VLAN and Swtich

43. A new switch is installed in the Certkiller network. This switch is to be configured so that VLAN information will be automatically distributed to all the other Cisco Catalyst switches in the network. Which of the conditions below have to be met in o
Duplex mismatch
ARP and ICMP
Application
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.

44. 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?
Decrease the window size.
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
HTTPS - SMTP - and TFTP
Configure the switch so that it has lower priority than other switches in the network

45. 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?
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
An electrical pulse indicates that the collision has cleared.
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
It is used to prevent switching loops in networks with redundant switched routes.

46. 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?
Auto - Desirable - and On
ARP and ICMP
A broadcast address will never be the source address of a frame
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.

47. Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet?
MAC Address and Bridge Priority
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
The sequence number in the TCP header.
The system is malfunctioning.

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?
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Configure the switch so that it has a lower priority than other switches in the network.
In an improperly implemented redundant topology
It will prevent segment 1's broadcasts from getting to segment 2.

49. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
Network
The switch will forward the frame to a specific port
Physical Layer and Datalink Layer
This is an Ethernet port operating at half duplex

50. What is the purpose of the spanning-tree algorithm in a switched LAN?
HTTPS - SMTP - and TFTP
Device Identifiers - Capabilities list - Platform
Sequence number - Window size - and Acknowledgment number
To prevent switching loops in networks with redundant switched paths.