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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. After an ethernet collision - which device has priority to transmit data?
When connecting a host to a switch.
Any device whose backoff timer expires first.
The physical address is added.
To facilitate the entry and exit of data on media.

2. 3 common problems w/ a large network
8
It does not support encryption.
A. performance degradation b. security issues c. host identification
32 bits

3. What can get you to an outside network?
It has expanded adressing capabilities.
A default gateway (router).
Console
A. they initiate data exchanges b. they may upload data to servers

4. What is the purpose of resource records in DNS?
Physical
A. decentralized resources b. resource sharing w/o a dedicated server
A. Cat5 UTP b. Cat6 UTP
Is used by the server to resolve names.

5. What device can check for faults - integrity and performance of media?
OTDR
Physical
A. servers b. routers c. network printers
A. the router will discard the packet b. the router will send a time exceeded message to the source host

6. What is the function of the DLL?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Host A
A. performance degradation b. security issues c. host identification
It provides for the exchange of data over a common local media.

7. What is the primary function of encapsulating packets into frames?
Physical
255.255.255.0
A. enable mode b. priviledge executive mode
To facilitate the entry and exit of data on media.

8. What is dinamically selected by the source host when forwarding data?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Source Port
It does not support encryption.
A. HTTP b. HTTPS

9. 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?
Rollover cable
DNS
255.255.255.0
Host A

10. What are key considering factors when grouping hosts into common networks?
A. purpose b. geographic location c. ownership
Router(config)# interface FastEthernet 0/1
Resolve IPv4 addresses to MAC addresses.
Minimal delays in data delivery.

11. Group of hosts that have identical bit patterns in the high order bits of their addresses
A backbone cable.
172.16.192.160
It uses lasers as the light source.
Network

12. Which type of cable is most often associated w/ fiber-optic cable?
A backbone cable.
A. router b. firewall
Transport
No collisions will occur on this link.

13. What is the primary purpose of Layer 4?
Identify processes or services that are communicating with end devices.
Router
Resolve IPv4 addresses to MAC addresses.
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

14. What is the purpose of a default gateway?
To prevent the receiver from being overwhelmed by incoming data.
Host A
Identify the device that allows local network computers to communicate w/ devices in other networks.
80 (HTTP)

15. What is a component of a routing table entry?
Next-Hop Address
Any device whose backoff timer expires first.
A. performance degradation b. security issues c. host identification
255.255.255.224

16. What is the primary reason for developing IPv6?
Show Interfaces
It has expanded adressing capabilities.
A. router b. firewall
A. they initiate data exchanges b. they may upload data to servers

17. 2 characteristics of clients in data networks
Create signals that represent the bits in each frame for the media.
8
A. netstat -r b. route PRINT
A. they initiate data exchanges b. they may upload data to servers

18. What are 2 forms of application layer software?
To prevent the receiver from being overwhelmed by incoming data.
A. application b. services
A. identifies the communicating applications b. identifies multiple conversations between the hosts
It reduces unnecessary broadcasts.

19. Which combination of keys can be used to interrupt a ping or traceroute process?
Ctrl + Shift + 6
Time-to-live (TTL)
Console interface
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

20. What is a protocol that provides connectionless network layer services?
To enable a receiving host to forward the data to the appropriate application.
Show Interfaces
IP Protocol
80 (HTTP)

21. What is an automated service that matches resource names w/ required IP addresses?
Window Size
They must wait until the first hosts finish transfering the media.
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
DNS

22. 3 terms that define the forms of help available within the Cisco IOS
Destination is not contacted before a packet is sent.
A. hot keys b. context-sensitive c. command syntax check
Network Layer Packet
Hub

23. 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?
A backbone cable.
Is a layer of specific encapsulation.
Rollover cable
2046

24. What 2 type of cables would most commonly be used for new runs?
A. Cat5 UTP b. Cat6 UTP
A. identifies pieces of data as part of the same communication b. ensures the data pieces can be directed to the correct receiving end device
Hosts return to listen-before-transmit mode.
Transport

25. 3 facts about the network portion of an IPv4 address
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. router b. firewall
RJ-45
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

26. After a routers ends its boot sequence - the admin wants to check the routers config. From the EXEC mode - which commands can the admin use?
Console interface
Signal loss can be experienced.
When connecting a host to a switch.
A. show startup-config b. show running-config

27. What is the purpose of the TCP/IP Network Application Layer?
Network Media Control
Physical
A. physical layer b. DLL layer
Logical Link Control sublayer

28. What are 3 common problems w/ large networks?
A. perform degradation b. security issues c. host identification
A. Cat5 UTP b. Cat6 UTP
Console
MAC

29. In business LANs - which connector is used w/ twisted-pair networking cable?
It provides interface between applications on either end of the network.
A. netstat -r b. route PRINT
A. application b. presentation c. session d. transmision e. network f. data link g. physical
RJ-45

30. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
MAC
A. media sharing b. logical topology
Window Size

31. 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
Show Interfaces
Originate data flow.
Window Size

32. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. Cat5 UTP b. Cat6 UTP
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
SSH

33. What can be a problem that is reduced by adding end-to-end addressing?
It reduces unnecessary broadcasts.
A. replace a switch w/ a router b. subnet the new networks
Resolve IPv4 addresses to MAC addresses.
Supports error detection.

34. What connectors are commonly associated w/ Cisco's V.35 serial cables?
DNS
A. it has centralized administration b. security is easier to enforce
A. DB 60 b. Winchester 15-pin c. smart serial
Minimal delays in data delivery.

35. What type of routing uses information that is manually entered into the routing table?
When connecting a host to a switch.
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
It does not support encryption.
Static

36. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Fiber
Window Size
Flash
A. flow control b. session establishment c. numbering and sequencing

37. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
It does not support encryption.
32 bits
A. enable mode b. priviledge executive mode
80 (HTTP)

38. What method of signal transmission uses radio waves to carry signals?
Wireless
Network Layer
A. not affected by EMI of RFI b. most expensive type of LAN cabling
172.16.192.160

39. Where is the IOS file stored at?
UDP
Network Access
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Flash

40. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Rollover cable
Binary ANDing
A. non-deterministic b. less overhead c. collisions exist
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

41. What describes the purpose of default route?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
No collisions will occur on this link.
Console interface
It has expanded adressing capabilities.

42. Intermediary devices used to implement security between networks
255.255.255.224
80 (HTTP)
Destination is not contacted before a packet is sent.
A. router b. firewall

43. 2 most commonly used media types in ethernet networks
DNS
Is a layer of specific encapsulation.
A. copper UTP b. optical fiber
Originate data flow.

44. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Router
Switch
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
Identify processes or services that are communicating with end devices.

45. What are 3 pieces of info about a route contained in a routing table?
A. non-deterministic b. less overhead c. collisions exist
A. next-hop b. metric/interface c. destination network address
To enable a receiving host to forward the data to the appropriate application.
IP Protocol

46. What info is found in the TCP and UDP header info?
Source and Destination Ports
Show Interfaces
Signal loss can be experienced.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

47. 3 statements about routes and their use
IP Protocol
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. hot keys b. context-sensitive c. command syntax check
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

48. At which layer of the TCP/IP model does ethernet operate?
The destination host address.
Network Media Control
Resolve IPv4 addresses to MAC addresses.
Network Access

49. 3 factors that should be considered when implementing Layer 2 protocols
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Resolve IPv4 addresses to MAC addresses.
Console interface
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

50. If you have a full-duplex operational network - what can happen?
UTP
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
No collisions will occur on this link.
Ctrl + Shift + 6

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CCNA - 2

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