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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 a device is moved from one network to the other...?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
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. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Host A

2. What is the primary rope of the physical layer in transmitting data?
Create signals that represent the bits in each frame for the media.
Binary ANDing
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Time-to-live (TTL)

3. During a TCP session - if packets arrive out of order - what will happen?
A. router b. firewall
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
Signal loss can be experienced.
The packets will be delivered and reassembled at destination.

4. Which layer supplies services and allows user interface?
A. low overhead b. connectionless
Application Layer
8
A. performance degradation b. security issues c. host identification

5. 2 characteristics of clients in data networks
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. copper UTP b. optical fiber
Host mobility
A. they initiate data exchanges b. they may upload data to servers

6. There are too many broadcasts on switches - what can be done?
A. performance degradation b. security issues c. host identification
A. replace a switch w/ a router b. subnet the new networks
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
FTP

7. Network Protocols
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. identifies the communicating applications b. identifies multiple conversations between the hosts
OTDR
Host mobility

8. What is a characteristic of a logical point-to-point topology?
Originate data flow.
Minimal delays in data delivery.
The MAC protocol can be very simple.
A. HTTP b. HTTPS

9. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
It uses support from the lower layers to distinguish between connections to the service.
Network address
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. non-deterministic b. less overhead c. collisions exist

10. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Binary ANDing
Hub
A. they initiate data exchanges b. they may upload data to servers
Is used by the server to resolve names.

11. 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. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Application Layer
Source Port
2046

12. What is a characteristic of a single-mode fiber-optic cable?
Next-Hop Address
Originate data flow.
It uses lasers as the light source.
Hub

13. What networking devices are recommended to be assigned static IP addresses?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. Physical b. Data Link
A. servers b. routers c. network printers

14. What can you identify when you examine the Network Layer header?
The destination host address.
Network address
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

15. At which layer of the TCP/IP model does ethernet operate?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Host mobility
Destination Network Address
Network Access

16. Which combination of keys can be used to interrupt a ping or traceroute process?
RJ-45
The physical address is added.
Router(config)# hostname Costas
Ctrl + Shift + 6

17. 2 characteristics of peer-2-peer
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. decentralized resources b. resource sharing w/o a dedicated server
To enable a receiving host to forward the data to the appropriate application.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

18. When destination network is not in the routing table - What are 2 actions the router might take?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Originate data flow.
255.255.255.0
A. it has centralized administration b. security is easier to enforce

19. Why are port numbers included in the TCP header of a segment?
To enable a receiving host to forward the data to the appropriate application.
A. show startup-config b. show running-config
Static
Router

20. Which device is used to create or divide broadcast domains?
A. hot keys b. context-sensitive c. command syntax check
IP Protocol
Router
The packets will be delivered and reassembled at destination.

21. 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. show startup-config b. show running-config
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Network address

22. When a network service fails - which port is most often used to access a router for management purposes?
A. enable mode b. priviledge executive mode
Console
2046
8

23. Why is flow control used for TCP data transfer?
A. show startup-config b. show running-config
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
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
To prevent the receiver from being overwhelmed by incoming data.

24. What 2 type of cables would most commonly be used for new runs?
Router(config)# hostname Costas
80 (HTTP)
OTDR
A. Cat5 UTP b. Cat6 UTP

25. An admin needs to keep contents private - which access method should he use?
SSH
UTP
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. netstat -r b. route PRINT

26. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
A. minimizing of collisions b. division into broadcast domains
Identify processes or services that are communicating with end devices.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Network Layer Packet

27. Important characteristic of UDP
It reduces unnecessary broadcasts.
Minimal delays in data delivery.
SMB
It uses lasers as the light source.

28. What is the primary function of encapsulating packets into frames?
To facilitate the entry and exit of data on media.
A. show startup-config b. show running-config
The destination host address.
Is used by the server to resolve names.

29. 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. show startup-config b. show running-config
Identify processes or services that are communicating with end devices.
DNS
A. minimizing of collisions b. division into broadcast domains

30. What is a default gateway address?

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31. What command is used to change the default name to 'Costas'?
Router(config)# hostname Costas
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Network Layer
Console interface

32. What is a protocol that provides connectionless network layer services?
To enable a receiving host to forward the data to the appropriate application.
A. hot keys b. context-sensitive c. command syntax check
IP Protocol
A. flow control b. session establishment c. numbering and sequencing

33. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
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
MAC
A. show startup-config b. show running-config
Is used by the server to resolve names.

34. What can be a problem that is reduced by adding end-to-end addressing?
It reduces unnecessary broadcasts.
0 to 1023
32 bits
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

35. What do the intermediary devices in the network do?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
172.16.192.160
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. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

36. What is PDU?
Is a layer of specific encapsulation.
Identify processes or services that are communicating with end devices.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
172.16.192.160

37. Which type of cable is most often associated w/ fiber-optic cable?
The MAC protocol can be very simple.
A backbone cable.
Is used by the server to resolve names.
8

38. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
Source and Destination Ports
TCP initializes the sequence numbers for the sessions.
The physical address is added.
A. Physical b. Data Link

39. What describes the purpose of default route?
Time-to-live (TTL)
Identify the device that allows local network computers to communicate w/ devices in other networks.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

40. statements of IP adressing
They must wait until the first hosts finish transfering the media.
Identify the device that allows local network computers to communicate w/ devices in other networks.
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. goodput b. throughput c. bandwidth

41. What type of routing uses information that is manually entered into the routing table?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
OTDR
Static
255.255.255.0

42. Intermediary devices used to implement security between networks
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
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. router b. firewall
A random delay helps prevent the stations from experiencing another collision during transmission.

43. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Destination Network Address
A. hot keys b. context-sensitive c. command syntax check
Switch
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

44. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. enable mode b. priviledge executive mode
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

45. If there is a graphic representation of a company network wiring and equipment - What is this called?
Is used by the server to resolve names.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
The destination host address.
A physical topology.

46. What is a component of a routing table entry?
Next-Hop Address
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
Source Port
Source and Destination IP address

47. 3 features that allow TCP to realibly and accurately track the transmission of data
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
SSH
UTP

48. 3 features of IPv6
The MAC protocol can be very simple.
Window Size
2046
A. larger address space b. data types and classes of service c. authentication and encryption

49. When do changes take effect in a Cisco router?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
The destination host address.
As the commands are entered.
80 (HTTP)

50. What determines the method of media access control?
The magnetic field around the adjacent pairs of wire.
A. media sharing b. logical topology
Show Interfaces
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions