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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. What are 3 pieces of info about a route contained in a routing table?
A. they initiate data exchanges b. they may upload data to servers
A. next-hop b. metric/interface c. destination network address
Switch
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

2. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. enable mode b. priviledge executive mode
A. larger address space b. data types and classes of service c. authentication and encryption

3. What is a component of a routing table entry?
Ctrl + Shift + 6
Network Access
MAC
Next-Hop Address

4. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. copper UTP b. optical fiber
A. larger address space b. data types and classes of service c. authentication and encryption
A. enable mode b. priviledge executive mode
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

5. What is the primary reason for developing IPv6?
It has expanded adressing capabilities.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
UTP
The physical address is added.

6. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Source and Destination Ports
Network
Network Layer
Network Layer Packet

7. 2 most commonly used media types in ethernet networks
Identify processes or services that are communicating with end devices.
Host A
A. copper UTP b. optical fiber
Application Layer

8. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Static
Console
Hub
Network Layer

9. Default Gateway is incorrect on the host - What is the impact on the communications?
8
Source and Destination IP address
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

10. 2 functions of encapsulation
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
0 to 1023
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
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

11. 3 primary functions of the data link layer encapsulation
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. DB 60 b. Winchester 15-pin c. smart serial
A. addressing b. error detection c. frame delimiting
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

12. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
OTDR
Network address
It provides for the exchange of data over a common local media.
Switch

13. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
Window Size
A. purpose b. geographic location c. ownership
A. enable mode b. priviledge executive mode
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

14. Where is the IOS file stored at?
To prevent the receiver from being overwhelmed by incoming data.
A. decentralized resources b. resource sharing w/o a dedicated server
Identify the device that allows local network computers to communicate w/ devices in other networks.
Flash

15. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
Network address
255.255.255.224
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
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

16. What is the primary purpose of ARP?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Resolve IPv4 addresses to MAC addresses.
It provides interface between applications on either end of the network.
MAC

17. What is the primary rope of the physical layer in transmitting data?
A. purpose b. geographic location c. ownership
Create signals that represent the bits in each frame for the media.
Show Interfaces
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

18. What are 2 features of User Diagram Protocol (UDP)?
Console
A. low overhead b. connectionless
Any device whose backoff timer expires first.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

19. How many bits make up an IPv4 address?
8
32 bits
80 (HTTP)
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

20. When is a straight-through cable used in a network?
When connecting a host to a switch.
Router(config)# interface FastEthernet 0/1
Destination Network Address
80 (HTTP)

21. 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
To facilitate the entry and exit of data on media.
Source and Destination IP address
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Application Layer

22. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
It reduces unnecessary broadcasts.
Originate data flow.
Binary ANDing
A. purpose b. geographic location c. ownership

23. 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. not affected by EMI of RFI b. most expensive type of LAN cabling
Time-to-live (TTL)
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

24. 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
SMB
Identify processes or services that are communicating with end devices.

25. 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?
FTP
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. DNS b. SMTP c. POP
2046

26. At which layers of the OSI model does ethernet operate?
A. copper UTP b. optical fiber
A. physical layer b. DLL layer
Ctrl + Shift + 6
RJ-45

27. What type of routing uses information that is manually entered into the routing table?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
255.255.255.224
No collisions will occur on this link.
Static

28. What is a characteristic of a logical point-to-point topology?
The MAC protocol can be very simple.
Switch
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Network address

29. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
MAC
A. larger address space b. data types and classes of service c. authentication and encryption
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

30. 3 common problems w/ a large network
A. servers b. routers c. network printers
Router(config)# hostname Costas
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. performance degradation b. security issues c. host identification

31. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
Router(config)# hostname Costas
Source and Destination IP address
UTP
Destination is not contacted before a packet is sent.

32. What command can be used to determine if the router has experienced any input or output errors?
Source and Destination IP address
It reduces unnecessary broadcasts.
Show Interfaces
Console

33. Which type of cable is most often associated w/ fiber-optic cable?
A. decentralized resources b. resource sharing w/o a dedicated server
To enable a receiving host to forward the data to the appropriate application.
Supports error detection.
A backbone cable.

34. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
A. non-deterministic b. less overhead c. collisions exist
Source and Destination Ports
A. Physical b. Data Link
No collisions will occur on this link.

35. What makes fiber preferable to copper for interconnecting buildings?
MAC
Host A
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Source and Destination IP address

36. Why is flow control used for TCP data transfer?
To prevent the receiver from being overwhelmed by incoming data.
It has expanded adressing capabilities.
A. Cat5 UTP b. Cat6 UTP
Originate data flow.

37. If there is a graphic representation of a company network wiring and equipment - What is this called?
A physical topology.
A. Physical b. Data Link
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. servers b. routers c. network printers

38. What application layer protocol is used to support file transfers between client and server?
Identify the device that allows local network computers to communicate w/ devices in other networks.
32 bits
FTP
It uses lasers as the light source.

39. 2 characteristics of peer-2-peer
A. minimizing of collisions b. division into broadcast domains
A. decentralized resources b. resource sharing w/o a dedicated server
It uses support from the lower layers to distinguish between connections to the service.
Is used by the server to resolve names.

40. statements of IP adressing
A. copper UTP b. optical fiber
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
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. goodput b. throughput c. bandwidth

41. Which 2 options represent Layer 4 addressing?
DNS
TCP initializes the sequence numbers for the sessions.
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. identifies the communicating applications b. identifies multiple conversations between the hosts

42. What are the advantages of using a client-server model?
Ctrl + Shift + 6
Destination Network Address
A. it has centralized administration b. security is easier to enforce
It does not support encryption.

43. When destination network is not in the routing table - What are 2 actions the router might take?
32 bits
255.255.255.224
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Minimal delays in data delivery.

44. What connectors are commonly associated w/ Cisco's V.35 serial cables?
It uses support from the lower layers to distinguish between connections to the service.
A. replace a switch w/ a router b. subnet the new networks
Host A
A. DB 60 b. Winchester 15-pin c. smart serial

45. 3 features that allow TCP to realibly and accurately track the transmission of data
A. flow control b. session establishment c. numbering and sequencing
Identify processes or services that are communicating with end devices.
A. purpose b. geographic location c. ownership
80 (HTTP)

46. Which device is used to create or divide broadcast domains?
Router
It provides interface between applications on either end of the network.
80 (HTTP)
A. larger address space b. data types and classes of service c. authentication and encryption

47. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
A. addressing b. error detection c. frame delimiting
Router(config)# interface FastEthernet 0/1
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A backbone cable.

48. During encapsulation - what happens in the Data Link Layer?
2046
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. decentralized resources b. resource sharing w/o a dedicated server
The physical address is added.

49. 3 measures of data transfer
Network Layer Packet
A. flow control b. session establishment c. numbering and sequencing
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. goodput b. throughput c. bandwidth

50. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
They must wait until the first hosts finish transfering the media.
80 (HTTP)
Physical