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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. When destination network is not in the routing table - What are 2 actions the router might take?
Physical
FTP
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Fiber

2. What is the primary purpose of ARP?
The packets will be delivered and reassembled at destination.
Network address
Network Media Control
Resolve IPv4 addresses to MAC addresses.

3. 3 statements about routes and their use
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. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
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. router discards the packet b. router forwards the packet out the interface indicated in the route entry

4. What are 3 properties of contention-based media access for a shared media?
A. non-deterministic b. less overhead c. collisions exist
The address of the router that the host will use to 'get to the other side'.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Any device whose backoff timer expires first.

5. Which characteristics describe fiber optic cable?
It has expanded adressing capabilities.
It provides for the exchange of data over a common local media.
A. it has centralized administration b. security is easier to enforce
A. not affected by EMI of RFI b. most expensive type of LAN cabling

6. 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
Originate data flow.
Fiber
A. MTA b. SMTP
A. the router will discard the packet b. the router will send a time exceeded message to the source host

7. What event occurs during the 3-way handshake?
TCP initializes the sequence numbers for the sessions.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Transport
RJ-45

8. Which combination of keys can be used to interrupt a ping or traceroute process?
A. netstat -r b. route PRINT
As the commands are entered.
Transport
Ctrl + Shift + 6

9. What layer encapsulates segments into packets?
A. MTA b. SMTP
Is used by the server to resolve names.
The MAC protocol can be very simple.
Network Layer

10. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
Switch
Hosts return to listen-before-transmit mode.
UDP
As the commands are entered.

11. Which IP packet field will prevent endless loops?
Binary ANDing
A. HTTP b. HTTPS
A. MTA b. SMTP
Time-to-live (TTL)

12. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
When connecting a host to a switch.
0 to 1023
172.16.192.160
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

13. What are 2 forms of application layer software?
A. application b. services
Network portion
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Network

14. What can be a problem that is reduced by adding end-to-end addressing?
As the commands are entered.
Destination Network Address
It reduces unnecessary broadcasts.
Flash

15. Which portion of the network layer address does a router use to forward packets?
A. purpose b. geographic location c. ownership
Logical Link Control sublayer
DNS
Network portion

16. 3 factors that should be considered when implementing Layer 2 protocols
Flash
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Collisions can decrease network performance.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

17. What does the IEEE 802.2 standard represent in Ethernet technologies?
Originate data flow.
8
Logical Link Control sublayer
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

18. What is the purpose of a default gateway?
Source and Destination Ports
A. DNS b. SMTP c. POP
A. HTTP b. HTTPS
Identify the device that allows local network computers to communicate w/ devices in other networks.

19. What command can be used to determine if the router has experienced any input or output errors?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. next-hop b. metric/interface c. destination network address
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Show Interfaces

20. At which layers of the OSI model does ethernet operate?
A. physical layer b. DLL layer
MAC
UTP
No collisions will occur on this link.

21. What determines the method of media access control?
Logical Link Control sublayer
A. not affected by EMI of RFI b. most expensive type of LAN cabling
It has expanded adressing capabilities.
A. media sharing b. logical topology

22. 3 terms that define the forms of help available within the Cisco IOS
TCP initializes the sequence numbers for the sessions.
A. hot keys b. context-sensitive c. command syntax check
Network Access
A. application b. presentation c. session d. transmision e. network f. data link g. physical

23. 3 properties of peer-2-peer applications
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. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

24. How many bits make up an IPv4 address?
Router
RJ-45
A. router b. firewall
32 bits

25. What is the purpose of the TCP/IP Network Application Layer?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Network Media Control
Identify the device that allows local network computers to communicate w/ devices in other networks.
Twisting of the cables

26. If you have a full-duplex operational network - what can happen?
Supports error detection.
Identify processes or services that are communicating with end devices.
80 (HTTP)
No collisions will occur on this link.

27. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Network Media Control
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Window Size
Hosts return to listen-before-transmit mode.

28. 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?
Flash
2046
Is a layer of specific encapsulation.
It provides for the exchange of data over a common local media.

29. An admin needs to keep contents private - which access method should he use?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
SSH
Ctrl + Shift + 6
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

30. During a TCP session - if packets arrive out of order - what will happen?
The packets will be delivered and reassembled at destination.
Router
TCP initializes the sequence numbers for the sessions.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

31. 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. show startup-config b. show running-config
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Network

32. There are 4 different hosts connected to a hub - media is being transfered between 2 of them but the other 2 will also like to transfer media. What must the latest hosts do to transfer the media?
A. performance degradation b. security issues c. host identification
They must wait until the first hosts finish transfering the media.
A. application b. services
Switch

33. 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?
A. hot keys b. context-sensitive c. command syntax check
Physical
A. show startup-config b. show running-config
Hosts return to listen-before-transmit mode.

34. 3 statements of media acess control
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. 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
Supports error detection.
Network Layer Packet

35. What is a characteristic of a logical point-to-point topology?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Supports error detection.
The MAC protocol can be very simple.

36. What do end devices do?
A. it has centralized administration b. security is easier to enforce
Originate data flow.
When connecting a host to a switch.
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

37. What is a benefit of a WAN?
A. DNS b. SMTP c. POP
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. addressing b. error detection c. frame delimiting
Host mobility

38. What is a default gateway address?

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39. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
Identify the device that allows local network computers to communicate w/ devices in other networks.
Source and Destination IP address
A. Physical b. Data Link
A. servers b. routers c. network printers

40. When do changes take effect in a Cisco router?
As the commands are entered.
It does not support encryption.
A. next-hop b. metric/interface c. destination network address
Console

41. What is a characteristic of a single-mode fiber-optic cable?
It reduces unnecessary broadcasts.
Network
It uses lasers as the light source.
Destination is not contacted before a packet is sent.

42. What is the primary rope of the physical layer in transmitting data?
A. enable mode b. priviledge executive mode
Create signals that represent the bits in each frame for the media.
A. replace a switch w/ a router b. subnet the new networks
They must wait until the first hosts finish transfering the media.

43. What statements describe the logical token-passing topology?
A. media sharing b. logical topology
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
255.255.255.0
8

44. 2 most commonly used media types in ethernet networks
A. HTTP b. HTTPS
Minimal delays in data delivery.
A. copper UTP b. optical fiber
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

45. 3 measures of data transfer
Switch
IP is not properly installed
A. goodput b. throughput c. bandwidth
A. they initiate data exchanges b. they may upload data to servers

46. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
A. minimizing of collisions b. division into broadcast domains
A. show startup-config b. show running-config
Supports error detection.
The magnetic field around the adjacent pairs of wire.

47. What method of signal transmission uses radio waves to carry signals?
Router
A. next-hop b. metric/interface c. destination network address
Wireless
Identify the device that allows local network computers to communicate w/ devices in other networks.

48. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
255.255.255.224
SMB
Destination is not contacted before a packet is sent.
It has expanded adressing capabilities.

49. What information is added during encapsulation at OSI Layer 3?
Any device whose backoff timer expires first.
Signal loss can be experienced.
Source and Destination IP address
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

50. 2 characteristics of peer-2-peer
A. decentralized resources b. resource sharing w/o a dedicated server
To enable a receiving host to forward the data to the appropriate application.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Create signals that represent the bits in each frame for the media.