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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. How many bits make up an IPv4 address?
The physical address is added.
Network address
A. enable mode b. priviledge executive mode
32 bits

2. What is the purpose of a default gateway?
To enable a receiving host to forward the data to the appropriate application.
Router(config)# interface FastEthernet 0/1
To facilitate the entry and exit of data on media.
Identify the device that allows local network computers to communicate w/ devices in other networks.

3. 2 features that make switches preferable to hubs
A. DB 60 b. Winchester 15-pin c. smart serial
A. minimizing of collisions b. division into broadcast domains
Console interface
Flash

4. 2 functions of encapsulation
Application Layer
172.16.192.160
A. Physical b. Data Link
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

5. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Ctrl + Shift + 6
IP Protocol
Network Layer Packet
A. HTTP b. HTTPS

6. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Router(config)# interface FastEthernet 0/1
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. media sharing b. logical topology
OTDR

7. Why is flow control used for TCP data transfer?
To prevent the receiver from being overwhelmed by incoming data.
OTDR
The address of the router that the host will use to 'get to the other side'.
FTP

8. 3 features of IPv6
IP Protocol
A. larger address space b. data types and classes of service c. authentication and encryption
The packets will be delivered and reassembled at destination.
A. application b. presentation c. session d. transmision e. network f. data link g. physical

9. What can get you to an outside network?
A default gateway (router).
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. servers b. routers c. network printers
Network portion

10. Which 2 options represent Layer 4 addressing?
Router(config)# interface FastEthernet 0/1
A. identifies the communicating applications b. identifies multiple conversations between the hosts
To facilitate the entry and exit of data on media.
Switch

11. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Show Interfaces
IP is not properly installed
Fiber

12. Group of hosts that have identical bit patterns in the high order bits of their addresses
Source Port
Network
Transport
A. minimizing of collisions b. division into broadcast domains

13. What is a disadvantage of Telnet?
FTP
The physical address is added.
It does not support encryption.
Time-to-live (TTL)

14. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
80 (HTTP)
Console
Switch
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

15. What is the primary purpose of Layer 4?
Originate data flow.
Identify processes or services that are communicating with end devices.
Is used by the server to resolve names.
A. larger address space b. data types and classes of service c. authentication and encryption

16. What are 2 protocols for transfering web resources?
Console interface
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. HTTP b. HTTPS

17. At which layers of the OSI model does ethernet operate?
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
A. physical layer b. DLL layer
Static
Identify processes or services that are communicating with end devices.

18. What type of network cable is used between a terminal and a console port?
Identify the device that allows local network computers to communicate w/ devices in other networks.
The MAC protocol can be very simple.
Rollover cable
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

19. What do end devices do?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Window Size
A physical topology.
Originate data flow.

20. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
A. performance degradation b. security issues c. host identification
Network address
A backbone cable.
A. DNS b. SMTP c. POP

21. What is the function of the DLL?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
It provides for the exchange of data over a common local media.
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. Physical b. Data Link

22. An admin needs to keep contents private - which access method should he use?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
SSH
It uses lasers as the light source.
Static

23. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
Destination Network Address
Wireless
Supports error detection.
Network Media Control

24. If there is a graphic representation of a company network wiring and equipment - What is this called?
UTP
Twisting of the cables
A. MTA b. SMTP
A physical topology.

25. What is dinamically selected by the source host when forwarding data?
RJ-45
Source Port
The MAC protocol can be very simple.
DNS

26. What device can check for faults - integrity and performance of media?
No collisions will occur on this link.
OTDR
Show Interfaces
Flash

27. What is a protocol that provides connectionless network layer services?
IP Protocol
When connecting a host to a switch.
Next-Hop Address
Any device whose backoff timer expires first.

28. 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 physical topology.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
255.255.255.0
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

29. When do changes take effect in a Cisco router?
Is used by the server to resolve names.
0 to 1023
As the commands are entered.
A. low overhead b. connectionless

30. In a connectionless system - What is correct?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Collisions can decrease network performance.
Destination is not contacted before a packet is sent.
Network address

31. What makes fiber preferable to copper for interconnecting buildings?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Hosts return to listen-before-transmit mode.
The destination host address.
A. identifies the communicating applications b. identifies multiple conversations between the hosts

32. What type of routing uses information that is manually entered into the routing table?
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
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. show startup-config b. show running-config
Static

33. 3 characteristics of valid Ethernet Layer 2 addresses
A. copper UTP b. optical fiber
Destination Network Address
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
172.16.192.160

34. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
FTP
UTP
A. DB 60 b. Winchester 15-pin c. smart serial
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

35. Which characteristics describe fiber optic cable?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Signal loss can be experienced.
Destination Network Address
TCP initializes the sequence numbers for the sessions.

36. What method of signal transmission uses radio waves to carry signals?
Router(config)# interface FastEthernet 0/1
TCP initializes the sequence numbers for the sessions.
SSH
Wireless

37. 3 common problems w/ a large network
Switch
0 to 1023
Signal loss can be experienced.
A. performance degradation b. security issues c. host identification

38. What can be a problem that is reduced by adding end-to-end addressing?
The physical address is added.
It reduces unnecessary broadcasts.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A random delay helps prevent the stations from experiencing another collision during transmission.

39. What is a characteristic of a logical point-to-point topology?
Window Size
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. decentralized resources b. resource sharing w/o a dedicated server
The MAC protocol can be very simple.

40. 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
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Next-Hop Address
UDP

41. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
A. addressing b. error detection c. frame delimiting
Time-to-live (TTL)
The magnetic field around the adjacent pairs of wire.
Binary ANDing

42. Which portion of the network layer address does a router use to forward packets?
Transport
8
Network portion
A. the router will discard the packet b. the router will send a time exceeded message to the source host

43. There are too many broadcasts on switches - what can be done?
A. non-deterministic b. less overhead c. collisions exist
A. performance degradation b. security issues c. host identification
Resolve IPv4 addresses to MAC addresses.
A. replace a switch w/ a router b. subnet the new networks

44. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
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
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Identify the device that allows local network computers to communicate w/ devices in other networks.
0 to 1023

45. What are 3 pieces of info about a route contained in a routing table?
172.16.192.160
No collisions will occur on this link.
A. next-hop b. metric/interface c. destination network address
The physical address is added.

46. 3 statements about routes and their use
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Router
A. purpose b. geographic location c. ownership
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

47. To make a console connection from a comp to a Cisco router - what cable should be used?
Rollover cable
A. flow control b. session establishment c. numbering and sequencing
RJ-45
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

48. In business LANs - which connector is used w/ twisted-pair networking cable?
Is used by the server to resolve names.
A backbone cable.
A. Physical b. Data Link
RJ-45

49. What correctly describes a MAC address?
Network
32 bits
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Hosts return to listen-before-transmit mode.

50. 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?
Minimal delays in data delivery.
MAC
FTP
2046