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. What is the primary purpose of Layer 4?
Identify processes or services that are communicating with end devices.
Network
Rollover cable
A. flow control b. session establishment c. numbering and sequencing

2. Which type of cable is most often associated w/ fiber-optic cable?
Host mobility
A backbone cable.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

3. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Network Layer Packet
Show Interfaces
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Router(config)# hostname Costas

4. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Window Size
Identify processes or services that are communicating with end devices.
As the commands are entered.
Fiber

5. Which 2 options represent Layer 4 addressing?
Router
UTP
OTDR
A. identifies the communicating applications b. identifies multiple conversations between the hosts

6. 3 protocols that operate in the application layer
A. DNS b. SMTP c. POP
A. DB 60 b. Winchester 15-pin c. smart serial
Switch
Router

7. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
SMB
Destination Network Address
IP Protocol
UTP

8. What are 2 features of User Diagram Protocol (UDP)?
IP Protocol
It has expanded adressing capabilities.
A. low overhead b. connectionless
UDP

9. If you have a small network w/ 3 computers...
0 to 1023
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. show startup-config b. show running-config
It reduces unnecessary broadcasts.

10. If you have a full-duplex operational network - what can happen?
No collisions will occur on this link.
Host mobility
Router(config)# hostname Costas
Identify the device that allows local network computers to communicate w/ devices in other networks.

11. At which layer of the TCP/IP model does ethernet operate?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
When connecting a host to a switch.
Network Access
Minimal delays in data delivery.

12. When do changes take effect in a Cisco router?
As the commands are entered.
A. servers b. routers c. network printers
Identify the device that allows local network computers to communicate w/ devices in other networks.
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

13. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
It does not support encryption.
A. minimizing of collisions b. division into broadcast domains
Physical

14. What can be a problem that is reduced by adding end-to-end addressing?
Network address
It reduces unnecessary broadcasts.
SSH
Create signals that represent the bits in each frame for the media.

15. What characteristic of an UTP helps reduce interference?
A. copper UTP b. optical fiber
Network address
Twisting of the cables
Router(config)# interface FastEthernet 0/1

16. When is a straight-through cable used in a network?
When connecting a host to a switch.
They must wait until the first hosts finish transfering the media.
As the commands are entered.
SMB

17. What do you need to use for an initial configuration on a Cisco router?
Identify processes or services that are communicating with end devices.
Console interface
Application Layer
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

18. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
It uses lasers as the light source.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Network Access
255.255.255.0

19. At which layers of the OSI model does ethernet operate?
The address of the router that the host will use to 'get to the other side'.
To facilitate the entry and exit of data on media.
A. replace a switch w/ a router b. subnet the new networks
A. physical layer b. DLL layer

20. What do the intermediary devices in the network do?
They must wait until the first hosts finish transfering the media.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Network portion
172.16.192.160

21. What are key considering factors when grouping hosts into common networks?
A. purpose b. geographic location c. ownership
The address of the router that the host will use to 'get to the other side'.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
255.255.255.224

22. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
A. show startup-config b. show running-config
Router(config)# interface FastEthernet 0/1
It has expanded adressing capabilities.
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

23. What is a default gateway address?

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24. 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. enable mode b. priviledge executive mode
8
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
Host mobility

25. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
A. HTTP b. HTTPS
Resolve IPv4 addresses to MAC addresses.
Network address
The destination host address.

26. Where is the IOS file stored at?
Host mobility
Flash
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
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

27. Which combination of keys can be used to interrupt a ping or traceroute process?
Ctrl + Shift + 6
A. addressing b. error detection c. frame delimiting
It has expanded adressing capabilities.
A. goodput b. throughput c. bandwidth

28. During encapsulation - what happens in the Data Link Layer?
Host mobility
The physical address is added.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Source and Destination Ports

29. 2 characteristics of peer-2-peer
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. copper UTP b. optical fiber
A. decentralized resources b. resource sharing w/o a dedicated server

30. What connectors are commonly associated w/ Cisco's V.35 serial cables?
To facilitate the entry and exit of data on media.
A. DB 60 b. Winchester 15-pin c. smart serial
Network address
UTP

31. Which device is used to create or divide broadcast domains?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Next-Hop Address
Router
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

32. 3 facts about the network portion of an IPv4 address
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Transport
A. media sharing b. logical topology
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

33. 3 terms that define the forms of help available within the Cisco IOS
A. copper UTP b. optical fiber
A. hot keys b. context-sensitive c. command syntax check
Ctrl + Shift + 6
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

34. What is a characteristic of a logical point-to-point topology?
Signal loss can be experienced.
A. DNS b. SMTP c. POP
The MAC protocol can be very simple.
TCP initializes the sequence numbers for the sessions.

35. What are 2 commands used to view a host routing table?
A. router b. firewall
Destination Network Address
A. netstat -r b. route PRINT
Show Interfaces

36. Statements that describe LAN
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Physical
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. next-hop b. metric/interface c. destination network address

37. 3 common problems w/ a large network
Hosts return to listen-before-transmit mode.
Source and Destination Ports
A. performance degradation b. security issues c. host identification
Network Access

38. In business LANs - which connector is used w/ twisted-pair networking cable?
A. flow control b. session establishment c. numbering and sequencing
A. DNS b. SMTP c. POP
They must wait until the first hosts finish transfering the media.
RJ-45

39. 3 measures of data transfer
0 to 1023
Network Media Control
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. goodput b. throughput c. bandwidth

40. What is the purpose of the TCP/IP Network Application Layer?
Console interface
A. MTA b. SMTP
Flash
Network Media Control

41. What correctly describes a MAC address?
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
255.255.255.224
It provides for the exchange of data over a common local media.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

42. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. physical layer b. DLL layer
Hub
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

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. addressing b. error detection c. frame delimiting
2046
It has expanded adressing capabilities.
When connecting a host to a switch.

44. What is the purpose of the preamble in an ethernet frame?
8
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. goodput b. throughput c. bandwidth
A default gateway (router).

45. What are 3 properties of contention-based media access for a shared 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. non-deterministic b. less overhead c. collisions exist
Hosts return to listen-before-transmit mode.
A. low overhead b. connectionless

46. What are the advantages of using a client-server model?
Identify processes or services that are communicating with end devices.
A. goodput b. throughput c. bandwidth
As the commands are entered.
A. it has centralized administration b. security is easier to enforce

47. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
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. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Network Access
0 to 1023

48. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
IP Protocol
Transport
They must wait until the first hosts finish transfering the media.
255.255.255.224

49. statements of IP adressing
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
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
Network Media Control
A default gateway (router).

50. When destination network is not in the routing table - What are 2 actions the router might take?
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. 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. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)