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Test your basic knowledge |
CCNA Hard
Start Test
Study First
Subjects
:
cisco
,
it-skills
,
ccna
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. 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 will forward the frame to a specific port
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
802.1Q and ISL
2. Which of the following are true of Ethernet technology?
Fiber optic cable.
Hosts use a logical bus topology
All switch and bridge ports are in either the forwarding or blocking state.
HTTPS
3. 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?
Auto - On - and Desirable
Information about a route should never be sent back in the direction from which the original update came.
An additional broadcast domain will be created.
CertK Switch(config)# ip default-gateway 192.168.1.115
4. Which of the following can lead to the contribution of LAN traffic congestion?
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
TCP
SMTP - FTP - HTTP - and HTTPS
Layer 3
5. CDP is running between two CK devices. What information is supplied by CDP?
Device Identifiers - Capabilities list - Platform
Encapsulations PPP and authentication CHAP
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
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.
6. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
Sequence number - Window size - and Acknowledgment number
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.
Serial0/1 is down - line protocol is down
7. 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
Switches increase the number of collision domains in the network.
Source Port - Acknowledgment Number - and Window
Fiber optic cable.
8. 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
Certkiller B > trace
An additional broadcast domain will be created.
The system is malfunctioning.
9. 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?
Auto - Desirable - and On
STP
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Certkiller B > trace
10. Which protocol uses TCP port 443 at layer 4?
Serial0/1 is down - line protocol is down
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
VTP
11. 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?
Application
HTTPS
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
VTP
12. 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?
CertK Switch(config)# ip default-gateway 192.168.1.115
Network
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Show arp and Show interface
13. 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?
HTTPS - SMTP - and TFTP
VLAN and Swtich
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.
An electrical pulse indicates that the collision has cleared.
14. 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?
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
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
Show cdp neighbor detail
SMTP - FTP - HTTP - and HTTPS
15. Acknowledgements - sequencing - and flow control are functions that are handled by which layer of the OSI model?
The system is malfunctioning.
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
It is used to prevent switching loops in networks with redundant switched routes.
Layer 4
16. Which OSI layer header contains the address of a destination host that is on another network?
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Network
Fiber optic cable.
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
17. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
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
Congestion avoidance - Windowing and Buffering
Show arp and Show interface
The system is malfunctioning.
18. Which Layer 4 protocol is used for a Telnet connections between two CK routers?
Increased latency and Filtering of all frame errors
TCP
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 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.
19. Which of the protocols below use TCP at the transport layer?
TCP
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
Layer 4
SMTP - FTP - HTTP - and HTTPS
20. 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.)
Buffering - Cut-through - and Congestion avoidance
Switches - Bridges - and Routers
MAC Address and Bridge Priority
A broadcast address will never be the source address of a frame
21. 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 interfaces must be configured for NAT.
Switches increase the number of collision domains in the network.
Layer 3
Fiber optic cable.
22. You need to perform some initial configuration tasks on a new Certkiller switch. What is the purpose of assigning an IP address to a switch?
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Fiber optic cable.
To allow remote management of the switch.
Network
23. What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
VTP
The port is experiencing errors
All switch and bridge ports are in either the forwarding or blocking state.
24. 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?
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.
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.
CertK Switch(config)# ip default-gateway 192.168.1.115
The network layer
25. Which two of the following values does STP take into consideration when it elects the root bridge?
Auto - Desirable - and On
The Bridgeg ID and The bridge priority
Encapsulations PPP and authentication CHAP
An electrical pulse indicates that the collision has cleared.
26. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
SMTP FTP and HTTP
Congestion avoidance - Windowing and Buffering
STP
27. 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
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
Show arp and Show interface
All switch and bridge ports are in either the forwarding or blocking state.
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
28. Although TCP segments are similar to UDP segments - TCP packets contains some additional fields. Which of the following are found in a TCP header - but not in a UDP header?
Sequence number - Window size - and Acknowledgment number
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
VTP
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
29. 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?
Switches - Bridges - and Routers
MAC Address and Bridge Priority
HTTPS
The switch will forward the frame to a specific port
30. 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?
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
VLAN and Swtich
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
31. What is the IEEE standard associated with Gigabit Ethernet?
802.3ab and 802.3z
Hosts use a logical bus topology
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
Physical Layer and Datalink Layer
32. 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 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.
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 4
Device Identifiers - Capabilities list - Platform
33. 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?
This is an Ethernet port operating at half duplex
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Duplex mismatch
Transport
34. 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?
Configure the switch so that it has a lower priority than other switches in the network.
Learning - Listening - and Forwarding
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
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
35. 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)
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
Data link
The port is experiencing errors
36. CK1 is a switch in the Certkiller network. Why will CK1 never learn the broadcast address?
Show cdp neighbor detail
A broadcast address will never be the source address of a frame
An additional broadcast domain will be created.
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
37. 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.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Application
Layer 4
38. 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
Port security
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.
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
39. A Certkiller technician is troubleshooting connectivity problems between two routers that are directly connected through the serial line. The technician notices that the serial line is up but cannot see any neighbors displayed in the output of the sh
Layer 3
A broadcast address will never be the source address of a frame
Data link
Application
40. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Buffering - Cut-through - and Congestion avoidance
Transport
802.1Q and ISL
41. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
ARP and ICMP
Encapsulations PPP and authentication CHAP
Congestion avoidance - Windowing and Buffering
It operates without collisions and It provides faster data transfer
42. Which one of the following characterisitcs is true regardigin the use of the hubs and switches?
Encapsulations PPP and authentication CHAP
Switches increase the number of collision domains in the network.
The port is experiencing errors
Serial0/1 is down - line protocol is down
43. 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?
Data link
HTTPS - SMTP - and TFTP
A hub and A repeater.
100 meters
44. 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
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.
A hub and A repeater.
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.
Duplex mismatch
45. CDP is being used trhoughout the CK network. What are two reasons why the CK network administrator would use CDP?
HTTPS
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.
Decrease the window size.
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
46. By default - which of the following factors determines the spanning-tree path cost?
It is the sum of the costs based on bandwidth
The network layer
Device Identifiers - Capabilities list - Platform
Decrease the window size.
47. 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.
Application
HTTPS - SMTP - and TFTP
It is used to prevent switching loops in networks with redundant switched routes.
48. Which of the following correctly describe steps in the OSI date encapsulation process?
To allow remote management of the switch.
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 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
ARP and ICMP
49. 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?
Certkiller B > trace
The interfaces must be configured for NAT.
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 hub and A repeater.
50. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
Layer 4
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Path selections and Packet switching.
TCP