Test your basic knowledge |

CCNA - 2

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. What are key considering factors when grouping hosts into common networks?
A. purpose b. geographic location c. ownership
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

2. How many bits make up an IPv4 address?
2046
A. DB 60 b. Winchester 15-pin c. smart serial
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
32 bits

3. What characteristic of an UTP helps reduce interference?
Twisting of the cables
To facilitate the entry and exit of data on media.
Is a layer of specific encapsulation.
The magnetic field around the adjacent pairs of wire.

4. 2 things that will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Next-Hop Address
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. hot keys b. context-sensitive c. command syntax check

5. What do you need to use for an initial configuration on a Cisco router?
As the commands are entered.
It does not support encryption.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Console interface

6. What correctly describes a MAC address?
It does not support encryption.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Router
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

7. 3 measures of data transfer
A. goodput b. throughput c. bandwidth
Next-Hop Address
Rollover cable
Flash

8. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
Physical
Create signals that represent the bits in each frame for the media.
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

9. What type of routing uses information that is manually entered into the routing table?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Supports error detection.
Static
32 bits

10. What is an automated service that matches resource names w/ required IP addresses?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Source and Destination Ports
DNS
Destination is not contacted before a packet is sent.

11. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
It provides for the exchange of data over a common local media.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. the router will discard the packet b. the router will send a time exceeded message to the source host

12. What causes crosstalk within cable pairs when using UTP?
The packets will be delivered and reassembled at destination.
Flash
A. MTA b. SMTP
The magnetic field around the adjacent pairs of wire.

13. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
IP is not properly installed
Window Size
It has expanded adressing capabilities.
A. decentralized resources b. resource sharing w/o a dedicated server

14. If host A's DG is 10.0.0.1 and host B's DG is 10.0.0.2 - when the router's IP address is 10.0.0.1. Which one will go through?
Window Size
A. goodput b. throughput c. bandwidth
A. they initiate data exchanges b. they may upload data to servers
Host A

15. What command is used to change the default name to 'Costas'?
The address of the router that the host will use to 'get to the other side'.
32 bits
Router(config)# hostname Costas
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

16. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Network portion
UTP
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Transport

17. What is the primary rope of the physical layer in transmitting data?
A. larger address space b. data types and classes of service c. authentication and encryption
Create signals that represent the bits in each frame for the media.
Any device whose backoff timer expires first.
When connecting a host to a switch.

18. Which portion of the network layer address does a router use to forward packets?
The magnetic field around the adjacent pairs of wire.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Network portion
To prevent the receiver from being overwhelmed by incoming data.

19. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
A. performance degradation b. security issues c. host identification
255.255.255.224
Switch
As the commands are entered.

20. What type of network cable is used between a terminal and a console port?
When connecting a host to a switch.
Rollover cable
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Fiber

21. statements of IP adressing
It has expanded adressing capabilities.
A. private addresses are blocked from public internet by routers b. the ip address 127.0.0.1 is the loopback - directs traffic to itself
It provides interface between applications on either end of the network.
Console interface

22. At which layer of the TCP/IP model does ethernet operate?
Network Access
Switch
0 to 1023
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

23. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
Console interface
A. next-hop b. metric/interface c. destination network address
DNS
SMB

24. What is the proper order of the OSI Layers?
Network Access
A. application b. presentation c. session d. transmision e. network f. data link g. physical
When connecting a host to a switch.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

25. What determines the method of media access control?
Signal loss can be experienced.
A. if destination network is directly connected - router forwards packet to destination host b. if no route exists for the destination and the default route is present - packet if fowarded to the next-hop c. if the originating host has a default gate
A. media sharing b. logical topology
Originate data flow.

26. What kind of problems are caused by excessive broadcast traffic on network segments?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. acts as both client and server w/ same communication b. hybrid mode includes a centralized directory of files c. can be used in client-server networks
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
It uses support from the lower layers to distinguish between connections to the service.

27. 3 properties of peer-2-peer applications
A. acts as both client and server w/ same communication b. hybrid mode includes a centralized directory of files c. can be used in client-server networks
Source and Destination IP address
Network portion
A. DNS b. SMTP c. POP

28. What do end devices do?
Originate data flow.
Is a layer of specific encapsulation.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Network portion

29. There are too many broadcasts on switches - what can be done?
A. replace a switch w/ a router b. subnet the new networks
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. minimizing of collisions b. division into broadcast domains
They must wait until the first hosts finish transfering the media.

30. What is the primary function of encapsulating packets into frames?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
IP Protocol
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
To facilitate the entry and exit of data on media.

31. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
Hosts return to listen-before-transmit mode.
8
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

32. When destination network is not in the routing table - What are 2 actions the router might take?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A physical topology.
8
A. show startup-config b. show running-config

33. 3 factors that should be considered when implementing Layer 2 protocols
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Ctrl + Shift + 6
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

34. 2 most commonly used media types in ethernet networks
A. copper UTP b. optical fiber
A. the device will still operate at the same Layer 2 address (the address it had before) b. Layer 3 address must me reassigned for it to communicate w/ the network
A. security is difficult to enforce b. if one of the computers is responding to file sharing requests - that computer is functioning as a server
The packets will be delivered and reassembled at destination.

35. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
UTP
A. media sharing b. logical topology
Supports error detection.
A physical topology.

36. 3 functions of the upper data link sublayer in the OSI model
It uses support from the lower layers to distinguish between connections to the service.
Network
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
It provides interface between applications on either end of the network.

37. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Network address
Flash
A. application b. presentation c. session d. transmision e. network f. data link g. physical
8

38. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
A. DNS b. SMTP c. POP
A physical topology.
A. show startup-config b. show running-config
UDP

39. 3 common problems w/ a large network
Hub
A. performance degradation b. security issues c. host identification
A. router b. firewall
Signal loss can be experienced.

40. Default Gateway is incorrect on the host - What is the impact on the communications?
DNS
A backbone cable.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A random delay helps prevent the stations from experiencing another collision during transmission.

41. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
SSH
A. performance degradation b. security issues c. host identification
TCP initializes the sequence numbers for the sessions.
Window Size

42. Which combination of keys can be used to interrupt a ping or traceroute process?
Router
A. private addresses are blocked from public internet by routers b. the ip address 127.0.0.1 is the loopback - directs traffic to itself
It uses lasers as the light source.
Ctrl + Shift + 6

43. When do changes take effect in a Cisco router?
A. Physical b. Data Link
As the commands are entered.
TCP initializes the sequence numbers for the sessions.
Network Access

44. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
The packets will be delivered and reassembled at destination.
Resolve IPv4 addresses to MAC addresses.
UTP

45. What do the intermediary devices in the network do?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. performance degradation b. security issues c. host identification
OTDR
To facilitate the entry and exit of data on media.

46. What method of signal transmission uses radio waves to carry signals?
OTDR
Wireless
Create signals that represent the bits in each frame for the media.
Signal loss can be experienced.

47. In a connectionless system - What is correct?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. next-hop b. metric/interface c. destination network address
Destination is not contacted before a packet is sent.
Hosts return to listen-before-transmit mode.

48. What is the role of the OSI Application Layer?
A. servers b. routers c. network printers
It provides interface between applications on either end of the network.
32 bits
It provides for the exchange of data over a common local media.

49. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
The destination host address.
A random delay helps prevent the stations from experiencing another collision during transmission.
Application Layer

50. What is a component of a routing table entry?
A. application b. services
OTDR
Next-Hop Address
2046