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CCNA - 2

Instructions:

Answer 50 questions in 15 minutes.
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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. statements of IP adressing
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
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
The magnetic field around the adjacent pairs of wire.

2. What command can be used to determine if the router has experienced any input or output errors?
8
A. netstat -r b. route PRINT
Show Interfaces
Wireless

3. Important characteristic of UDP
It does not support encryption.
Minimal delays in data delivery.
Time-to-live (TTL)
IP is not properly installed

4. What are 3 pieces of info about a route contained in a routing table?
The physical address is added.
Application Layer
A. minimizing of collisions b. division into broadcast domains
A. next-hop b. metric/interface c. destination network address

5. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
Window Size
SMB
IP Protocol
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

6. During encapsulation - what happens in the Data Link Layer?
Source Port
A. replace a switch w/ a router b. subnet the new networks
A backbone cable.
The physical address is added.

7. What are 2 email components used to forward mail between servers?
It uses lasers as the light source.
A. it has centralized administration b. security is easier to enforce
A. MTA b. SMTP
IP Protocol

8. What do you need to use for an initial configuration on a Cisco router?
When connecting a host to a switch.
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Application Layer
Console interface

9. What application layer protocol is used to support file transfers between client and server?
Router
A. show startup-config b. show running-config
FTP
IP is not properly installed

10. What is a default gateway address?

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11. During a TCP session - if packets arrive out of order - what will happen?
Resolve IPv4 addresses to MAC addresses.
0 to 1023
A. DNS b. SMTP c. POP
The packets will be delivered and reassembled at destination.

12. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Binary ANDing
Switch
Flash

13. What is the primary function of encapsulating packets into frames?
80 (HTTP)
To enable a receiving host to forward the data to the appropriate application.
To facilitate the entry and exit of data on media.
Next-Hop Address

14. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
A. hot keys b. context-sensitive c. command syntax check
Router
255.255.255.0
2046

15. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
A. flow control b. session establishment c. numbering and sequencing
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. media sharing b. logical topology
Window Size

16. What method of signal transmission uses radio waves to carry signals?
Switch
Static
Wireless
Source and Destination IP address

17. An admin needs to keep contents private - which access method should he use?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Router(config)# hostname Costas
SSH
A. non-deterministic b. less overhead c. collisions exist

18. At which layer of the TCP/IP model does ethernet operate?
Twisting of the cables
Static
Network Access
Hosts return to listen-before-transmit mode.

19. What characteristic of an UTP helps reduce interference?
A. replace a switch w/ a router b. subnet the new networks
A. MTA b. SMTP
Twisting of the cables
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

20. 3 characteristics of valid Ethernet Layer 2 addresses
Router(config)# hostname Costas
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Destination is not contacted before a packet is sent.
A. physical layer b. DLL layer

21. 3 properties of peer-2-peer applications
Ctrl + Shift + 6
It provides for the exchange of data over a common local media.
A. addressing b. error detection c. frame delimiting
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

22. Default Gateway is incorrect on the host - What is the impact on the communications?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Originate data flow.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

23. What causes crosstalk within cable pairs when using UTP?
A. show startup-config b. show running-config
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
The magnetic field around the adjacent pairs of wire.
Signal loss can be experienced.

24. What are 2 protocols for transfering web resources?
Is used by the server to resolve names.
A. HTTP b. HTTPS
FTP
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

25. 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?
Host A
Minimal delays in data delivery.
Show Interfaces
0 to 1023

26. How many host addresses can be assigned to a subnetwork when using the 130.68.0.0 network address w/ a subnet mask of 255.255.248.0?
2046
Destination Network Address
A. decentralized resources b. resource sharing w/o a dedicated server
Binary ANDing

27. When is a straight-through cable used in a network?
A physical topology.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
When connecting a host to a switch.
A. ethernet utilizes CSMA/CD b. defined as placement of data frames on the media c. DLL protocols define the rules for access to different media

28. After an ethernet collision - which device has priority to transmit data?
SSH
Any device whose backoff timer expires first.
A. replace a switch w/ a router b. subnet the new networks
A. they initiate data exchanges b. they may upload data to servers

29. What is the proper order of the OSI Layers?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. performance degradation b. security issues c. host identification
8
It has expanded adressing capabilities.

30. What are the advantages of using a client-server model?
A. non-deterministic b. less overhead c. collisions exist
Console interface
A. Physical b. Data Link
A. it has centralized administration b. security is easier to enforce

31. What are 3 properties of contention-based media access for a shared media?
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
No collisions will occur on this link.
A. non-deterministic b. less overhead c. collisions exist
To prevent the receiver from being overwhelmed by incoming data.

32. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
2046
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
MAC
Hub

33. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Transport
A. servers b. routers c. network printers
A. media sharing b. logical topology
A. router b. firewall

34. What type of network cable is used between a terminal and a console port?
0 to 1023
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Source and Destination IP address
Rollover cable

35. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
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
The MAC protocol can be very simple.
Physical
TCP initializes the sequence numbers for the sessions.

36. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Binary ANDing
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

37. What is the primary purpose of ARP?
As the commands are entered.
Binary ANDing
UDP
Resolve IPv4 addresses to MAC addresses.

38. 3 facts about the network portion of an IPv4 address
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Binary ANDing
Minimal delays in data delivery.
It has expanded adressing capabilities.

39. What statements describe the logical token-passing topology?
The address of the router that the host will use to 'get to the other side'.
Host A
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Source Port

40. What is dinamically selected by the source host when forwarding data?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. media sharing b. logical topology
Source Port
IP Protocol

41. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Identify the device that allows local network computers to communicate w/ devices in other networks.
0 to 1023
A. copper UTP b. optical fiber

42. What is the purpose of resource records in DNS?
Is used by the server to resolve names.
A. minimizing of collisions b. division into broadcast domains
A. router b. firewall
A. physical layer b. DLL layer

43. What is the purpose of the TCP/IP Network Application Layer?
TCP initializes the sequence numbers for the sessions.
Network Media Control
Router(config)# interface FastEthernet 0/1
Network Layer Packet

44. What is the primary purpose of Layer 4?
It provides for the exchange of data over a common local media.
Identify processes or services that are communicating with end devices.
Source and Destination Ports
A. ethernet utilizes CSMA/CD b. defined as placement of data frames on the media c. DLL protocols define the rules for access to different media

45. What is a benefit of a WAN?
Network Media Control
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Host mobility
Collisions can decrease network performance.

46. What is a protocol that provides connectionless network layer services?
Router
Is a layer of specific encapsulation.
IP Protocol
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

47. What networking devices are recommended to be assigned static IP addresses?
A. servers b. routers c. network printers
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Network Layer Packet
Rollover cable

48. Which device is used to create or divide broadcast domains?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Network portion
Router
A. performance degradation b. security issues c. host identification

49. Intermediary devices used to implement security between networks
A. router b. firewall
8
Source and Destination Ports
0 to 1023

50. What are 3 common problems w/ large networks?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
It uses lasers as the light source.
Supports error detection.
A. perform degradation b. security issues c. host identification

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CCNA - 2

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