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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. 3 statements of media acess control
Destination is not contacted before a packet is sent.
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
Wireless
No collisions will occur on this link.

2. What is the primary purpose of ARP?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Binary ANDing
Resolve IPv4 addresses to MAC addresses.
The magnetic field around the adjacent pairs of wire.

3. What causes crosstalk within cable pairs when using UTP?
Destination Network Address
Supports error detection.
The magnetic field around the adjacent pairs of wire.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

4. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Source and Destination IP address
A. decentralized resources b. resource sharing w/o a dedicated server
Fiber
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

5. If you have a small network w/ 3 computers...
A. flow control b. session establishment c. numbering and sequencing
Source and Destination Ports
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
The packets will be delivered and reassembled at destination.

6. What is the purpose of a default gateway?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
They must wait until the first hosts finish transfering the media.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Identify the device that allows local network computers to communicate w/ devices in other networks.

7. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
Network Layer Packet
A. DNS b. SMTP c. POP
Supports error detection.
The magnetic field around the adjacent pairs of wire.

8. What is the purpose of the preamble in an ethernet frame?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Any device whose backoff timer expires first.
A backbone cable.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

9. What type of network cable is used between a terminal and a console port?
A. performance degradation b. security issues c. host identification
A. replace a switch w/ a router b. subnet the new networks
Rollover cable
A. physical layer b. DLL layer

10. 3 features that allow TCP to realibly and accurately track the transmission of data
The magnetic field around the adjacent pairs of wire.
32 bits
A. flow control b. session establishment c. numbering and sequencing
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

11. What are 2 commands used to view a host routing table?
A. netstat -r b. route PRINT
No collisions will occur on this link.
Network Layer Packet
A. show startup-config b. show running-config

12. Which portion of the network layer address does a router use to forward packets?
OTDR
Is a layer of specific encapsulation.
Network portion
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

13. What statements describe the logical token-passing topology?
To enable a receiving host to forward the data to the appropriate application.
IP Protocol
IP is not properly installed
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

14. 2 features that make switches preferable to hubs
A. minimizing of collisions b. division into broadcast domains
Network
Network address
A. copper UTP b. optical fiber

15. Intermediary devices used to implement security between networks
Host A
A. router b. firewall
UDP
As the commands are entered.

16. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Show Interfaces
As the commands are entered.
It uses lasers as the light source.

17. What networking devices are recommended to be assigned static IP addresses?
A. servers b. routers c. network printers
Originate data flow.
SSH
It reduces unnecessary broadcasts.

18. What can get you to an outside network?
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
Collisions can decrease network performance.
Binary ANDing
A default gateway (router).

19. How many bits make up an IPv4 address?
DNS
A. flow control b. session establishment c. numbering and sequencing
Destination Network Address
32 bits

20. What type of routing uses information that is manually entered into the routing table?
Static
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
SMB
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

21. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
When connecting a host to a switch.
A. it has centralized administration b. security is easier to enforce
255.255.255.224
A. addressing b. error detection c. frame delimiting

22. What are 3 properties of contention-based media access for a shared media?
Network Layer
A. non-deterministic b. less overhead c. collisions exist
To facilitate the entry and exit of data on media.
When connecting a host to a switch.

23. 2 functions of encapsulation
A. copper UTP b. optical fiber
A. MTA b. SMTP
A backbone cable.
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

24. Which 2 options represent Layer 4 addressing?
Rollover cable
Static
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. Physical b. Data Link

25. In business LANs - which connector is used w/ twisted-pair networking cable?
Switch
Rollover cable
A. copper UTP b. optical fiber
RJ-45

26. During encapsulation - what happens in the Data Link Layer?
The physical address is added.
SMB
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

27. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Logical Link Control sublayer
Console
Binary ANDing
0 to 1023

28. What are 3 pieces of info about a route contained in a routing table?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. next-hop b. metric/interface c. destination network address
RJ-45
80 (HTTP)

29. What event occurs during the 3-way handshake?
It provides for the exchange of data over a common local media.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
TCP initializes the sequence numbers for the sessions.

30. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
A. DB 60 b. Winchester 15-pin c. smart serial
SSH
To facilitate the entry and exit of data on media.
IP is not properly installed

31. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. enable mode b. priviledge executive mode
Network Layer Packet
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Destination is not contacted before a packet is sent.

32. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Transport
A physical topology.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Network Access

33. What are 2 features of User Diagram Protocol (UDP)?
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. low overhead b. connectionless
Create signals that represent the bits in each frame for the media.
Network Media Control

34. What 2 type of cables would most commonly be used for new runs?
SSH
A. goodput b. throughput c. bandwidth
The physical address is added.
A. Cat5 UTP b. Cat6 UTP

35. If there is a graphic representation of a company network wiring and equipment - What is this called?
FTP
A physical topology.
Network Media Control
Ctrl + Shift + 6

36. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Hub
Originate data flow.
Network
SMB

37. What is a characteristic of a single-mode fiber-optic cable?
Twisting of the cables
It uses lasers as the light source.
A. Cat5 UTP b. Cat6 UTP
A. show startup-config b. show running-config

38. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
Console
Twisting of the cables
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
MAC

39. What is a benefit of a WAN?
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
A. media sharing b. logical topology
Host mobility

40. What is a component of a routing table entry?
32 bits
A. netstat -r b. route PRINT
A. minimizing of collisions b. division into broadcast domains
Next-Hop Address

41. At which layers of the OSI model does ethernet operate?
A. netstat -r b. route PRINT
TCP initializes the sequence numbers for the sessions.
Network Layer Packet
A. physical layer b. DLL layer

42. To make a console connection from a comp to a Cisco router - what cable should be used?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Rollover cable
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
The packets will be delivered and reassembled at destination.

43. What is a characteristic of a logical point-to-point topology?
The MAC protocol can be very simple.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
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
Logical Link Control sublayer

44. When do changes take effect in a Cisco router?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. physical layer b. DLL 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)
As the commands are entered.

45. 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. netstat -r b. route PRINT
80 (HTTP)
2046
UDP

46. What is the role of the OSI Application Layer?
0 to 1023
A. netstat -r b. route PRINT
UDP
It provides interface between applications on either end of the network.

47. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
Minimal delays in data delivery.
A. larger address space b. data types and classes of service c. authentication and encryption
80 (HTTP)
FTP

48. 2 characteristics of clients in data networks
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. they initiate data exchanges b. they may upload data to servers
A. media sharing b. logical topology
A. identifies the communicating applications b. identifies multiple conversations between the hosts

49. What describes the purpose of default route?
8
Physical
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

50. What command is used to change the default name to 'Costas'?
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(config)# hostname Costas
As the commands are entered.
It provides interface between applications on either end of the network.