Test your basic knowledge |

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. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Switch
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
172.16.192.160

2. What are 2 email components used to forward mail between servers?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. MTA b. SMTP
SMB
A. purpose b. geographic location c. ownership

3. 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?
32 bits
A. show startup-config b. show running-config
Rollover cable
Network Layer Packet

4. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
Switch
172.16.192.160
A. enable mode b. priviledge executive mode
A. decentralized resources b. resource sharing w/o a dedicated server

5. What are key considering factors when grouping hosts into common networks?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
32 bits
Console
A. purpose b. geographic location c. ownership

6. What information is added during encapsulation at OSI Layer 3?
Hub
Source and Destination IP address
A. physical layer b. DLL layer
Router(config)# hostname Costas

7. Statements that describe LAN
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. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. servers b. routers c. network printers

8. 3 functions of the upper data link sublayer in the OSI model
The physical address is added.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Network
Time-to-live (TTL)

9. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
TCP initializes the sequence numbers for the sessions.
UTP
Flash
8

10. What type of network cable is used between a terminal and a console port?
Rollover cable
Destination is not contacted before a packet is sent.
It uses lasers as the light source.
Console

11. If you have a full-duplex operational network - what can happen?
No collisions will occur on this link.
It provides interface between applications on either end of the network.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
The destination host address.

12. There are too many broadcasts on switches - what can be done?
A. replace a switch w/ a router b. subnet the new networks
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. HTTP b. HTTPS
No collisions will occur on this link.

13. Why are port numbers included in the TCP header of a segment?
Rollover cable
To enable a receiving host to forward the data to the appropriate application.
Logical Link Control sublayer
Destination is not contacted before a packet is sent.

14. What is the role of MTA in handling email?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
The physical address is added.
Collisions can decrease network performance.
Time-to-live (TTL)

15. Which layer supplies services and allows user interface?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Application Layer
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. performance degradation b. security issues c. host identification

16. At which layers of the OSI model does ethernet operate?
Flash
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
255.255.255.224
A. physical layer b. DLL layer

17. 3 properties of peer-2-peer applications
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. router b. firewall
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
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

18. What is the purpose of the preamble in an ethernet frame?
A. addressing b. error detection c. frame delimiting
A. next-hop b. metric/interface c. destination network address
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Transport

19. What is an effect of improperly applying a network cable connector?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
It provides interface between applications on either end of the network.
A. next-hop b. metric/interface c. destination network address
Signal loss can be experienced.

20. What info is found in the TCP and UDP header info?
Source and Destination Ports
A. application b. services
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
Network

21. What statements describe the logical token-passing topology?
A. they initiate data exchanges b. they may upload data to servers
172.16.192.160
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Minimal delays in data delivery.

22. What is a component of a routing table entry?
Is used by the server to resolve names.
Static
Next-Hop Address
A. identifies the communicating applications b. identifies multiple conversations between the hosts

23. What method of signal transmission uses radio waves to carry signals?
Transport
When connecting a host to a switch.
Destination is not contacted before a packet is sent.
Wireless

24. What is the function of the DLL?
It provides for the exchange of data over a common local media.
Source and Destination IP address
A. physical layer b. DLL layer
A. copper UTP b. optical fiber

25. During a TCP session - if packets arrive out of order - what will happen?
Wireless
A. HTTP b. HTTPS
The packets will be delivered and reassembled at destination.
A. netstat -r b. route PRINT

26. What are 2 forms of application layer software?
It reduces unnecessary broadcasts.
A. application b. services
Destination is not contacted before a packet is sent.
To facilitate the entry and exit of data on media.

27. What can get you to an outside network?
A default gateway (router).
A. addressing b. error detection c. frame delimiting
A. DB 60 b. Winchester 15-pin c. smart serial
IP is not properly installed

28. If you have a small network w/ 3 computers...
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
Router
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
It reduces unnecessary broadcasts.

29. What is the primary reason for developing IPv6?
Create signals that represent the bits in each frame for the media.
172.16.192.160
Host mobility
It has expanded adressing capabilities.

30. In business LANs - which connector is used w/ twisted-pair networking cable?
A. router b. firewall
To enable a receiving host to forward the data to the appropriate application.
Is a layer of specific encapsulation.
RJ-45

31. What is the primary purpose of ARP?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
The packets will be delivered and reassembled at destination.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Resolve IPv4 addresses to MAC addresses.

32. What are 2 features of User Diagram Protocol (UDP)?
It uses lasers as the light source.
To facilitate the entry and exit of data on media.
A. low overhead b. connectionless
SSH

33. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Is used by the server to resolve names.
Window Size
Resolve IPv4 addresses to MAC addresses.
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

34. What characteristic of an UTP helps reduce interference?
Console interface
Destination is not contacted before a packet is sent.
Collisions can decrease network performance.
Twisting of the cables

35. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
0 to 1023
Is a layer of specific encapsulation.
Wireless
The destination host address.

36. Important characteristic of UDP
Show Interfaces
As the commands are entered.
Minimal delays in data delivery.
When connecting a host to a switch.

37. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
MAC
Rollover cable
Network Media Control
A. DB 60 b. Winchester 15-pin c. smart serial

38. What can you identify when you examine the Network Layer header?
DNS
UDP
It does not support encryption.
The destination host address.

39. What are 2 common characteristics associated w/ dynamic routing protocols?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
No collisions will occur on this link.
Fiber
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

40. 3 primary functions of the data link layer encapsulation
Identify processes or services that are communicating with end devices.
A default gateway (router).
0 to 1023
A. addressing b. error detection c. frame delimiting

41. Which combination of keys can be used to interrupt a ping or traceroute process?
The address of the router that the host will use to 'get to the other side'.
A. router b. firewall
Ctrl + Shift + 6
Network Layer

42. What does the IEEE 802.2 standard represent in Ethernet technologies?
Logical Link Control sublayer
When connecting a host to a switch.
Network Media Control
Identify the device that allows local network computers to communicate w/ devices in other networks.

43. 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. 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
Console
2046
80 (HTTP)

44. How many bits make up an IPv4 address?
32 bits
255.255.255.0
Network Media Control
Time-to-live (TTL)

45. 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?
Any device whose backoff timer expires first.
0 to 1023
Host A
32 bits

46. 3 statements about routes and their use
To facilitate the entry and exit of data on media.
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. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Wireless

47. When do changes take effect in a Cisco router?
8
Router
As the commands are entered.
When connecting a host to a switch.

48. Network Protocols
A. copper UTP b. optical fiber
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
To prevent the receiver from being overwhelmed by incoming data.

49. If you have a PC - 3 routers and a Laptop... How many unique CRC calculation will take place as traffic routes from the PC to the Laptop?
A. hot keys b. context-sensitive c. command syntax check
Any device whose backoff timer expires first.
Flash
8

50. What connectors are commonly associated w/ Cisco's V.35 serial cables?
It reduces unnecessary broadcasts.
A. DB 60 b. Winchester 15-pin c. smart serial
Resolve IPv4 addresses to MAC addresses.
A. non-deterministic b. less overhead c. collisions exist