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CCNA - 2

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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 type of network cable is used between a terminal and a console port?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Rollover cable
A. next-hop b. metric/interface c. destination network address
UDP

2. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
A. Physical b. Data Link
A. non-deterministic b. less overhead c. collisions exist
The magnetic field around the adjacent pairs of wire.
Application Layer

3. What type of routing uses information that is manually entered into the routing table?
A. flow control b. session establishment c. numbering and sequencing
Static
DNS
Network Layer

4. 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?
2046
A. netstat -r b. route PRINT
Hosts return to listen-before-transmit mode.
Wireless

5. What are 2 email components used to forward mail between servers?
Window Size
Identify the device that allows local network computers to communicate w/ devices in other networks.
Host mobility
A. MTA b. SMTP

6. 3 features of IPv6
A. minimizing of collisions b. division into broadcast domains
The packets will be delivered and reassembled at destination.
A. larger address space b. data types and classes of service c. authentication and encryption
Network

7. During encapsulation - what happens in the Data Link Layer?
The physical address is added.
It provides for the exchange of data over a common local media.
Transport
A default gateway (router).

8. What are 2 commands used to view a host routing table?
To prevent the receiver from being overwhelmed by incoming data.
A. netstat -r b. route PRINT
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

9. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
A. HTTP b. HTTPS
OTDR
IP is not properly installed
To enable a receiving host to forward the data to the appropriate application.

10. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
A. larger address space b. data types and classes of service c. authentication and encryption
A. HTTP b. HTTPS
Transport
Fiber

11. 2 features that make switches preferable to hubs
A backbone cable.
A. minimizing of collisions b. division into broadcast domains
Hub
255.255.255.0

12. Group of hosts that have identical bit patterns in the high order bits of their addresses
Network Media Control
It provides interface between applications on either end of the network.
Network
A. media sharing b. logical topology

13. What info is found in the TCP and UDP header info?
32 bits
Source and Destination Ports
80 (HTTP)
A. non-deterministic b. less overhead c. collisions exist

14. When do changes take effect in a Cisco router?
Twisting of the cables
As the commands are entered.
255.255.255.0
Network Media Control

15. What is the purpose of the preamble in an ethernet frame?
Network Media Control
To facilitate the entry and exit of data on media.
MAC
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

16. An admin needs to keep contents private - which access method should he use?
Logical Link Control sublayer
A. next-hop b. metric/interface c. destination network address
It has expanded adressing capabilities.
SSH

17. What is the purpose of resource records in DNS?
Next-Hop Address
A. decentralized resources b. resource sharing w/o a dedicated server
Wireless
Is used by the server to resolve names.

18. 2 characteristics of clients in data networks
Switch
A. media sharing b. logical topology
A. they initiate data exchanges b. they may upload data to servers
It uses lasers as the light source.

19. What describes the purpose of default route?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
8
Console interface
TCP initializes the sequence numbers for the sessions.

20. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
80 (HTTP)
A. HTTP b. HTTPS
A. enable mode b. priviledge executive mode
A. identifies the communicating applications b. identifies multiple conversations between the hosts

21. What information is added during encapsulation at OSI Layer 3?
Source and Destination IP address
A. next-hop b. metric/interface c. destination network address
It reduces unnecessary broadcasts.
SMB

22. 3 properties of peer-2-peer applications
Wireless
Static
Router(config)# hostname Costas
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

23. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Hub
MAC
UDP
A. application b. presentation c. session d. transmision e. network f. data link g. physical

24. 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
Logical Link Control sublayer
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

25. What can be a problem that is reduced by adding end-to-end addressing?
To prevent the receiver from being overwhelmed by incoming data.
A. flow control b. session establishment c. numbering and sequencing
Is used by the server to resolve names.
It reduces unnecessary broadcasts.

26. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Network Layer Packet
Physical
Network

27. 2 characteristics of peer-2-peer
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. decentralized resources b. resource sharing w/o a dedicated server
Ctrl + Shift + 6
A backbone cable.

28. 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?
Network
8
It provides for the exchange of data over a common local media.
To facilitate the entry and exit of data on media.

29. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Binary ANDing
A. physical layer b. DLL layer
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Network address

30. What do end devices do?
A. flow control b. session establishment c. numbering and sequencing
A. they initiate data exchanges b. they may upload data to servers
32 bits
Originate data flow.

31. In business LANs - which connector is used w/ twisted-pair networking cable?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. application b. services
RJ-45
A. Cat5 UTP b. Cat6 UTP

32. What is the primary purpose of Layer 4?
172.16.192.160
Identify processes or services that are communicating with end devices.
Destination is not contacted before a packet is sent.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

33. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
UDP
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. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

34. What makes fiber preferable to copper for interconnecting buildings?
Binary ANDing
A. HTTP b. HTTPS
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
It has expanded adressing capabilities.

35. Which type of cable is most often associated w/ fiber-optic cable?
A. enable mode b. priviledge executive mode
A backbone cable.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. performance degradation b. security issues c. host identification

36. Which characteristics describe fiber optic cable?
Host mobility
A. flow control b. session establishment c. numbering and sequencing
A. media sharing b. logical topology
A. not affected by EMI of RFI b. most expensive type of LAN cabling

37. 3 protocols that operate in the application layer
Network Access
A. DNS b. SMTP c. POP
A. flow control b. session establishment c. numbering and sequencing
The address of the router that the host will use to 'get to the other side'.

38. There are 4 different hosts connected to a hub - media is being transfered between 2 of them but the other 2 will also like to transfer media. What must the latest hosts do to transfer the media?
Physical
Host A
They must wait until the first hosts finish transfering the media.
Source Port

39. 3 terms that define the forms of help available within the Cisco IOS
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
The MAC protocol can be very simple.
A. hot keys b. context-sensitive c. command syntax check
OTDR

40. There are too many broadcasts on switches - what can be done?
TCP initializes the sequence numbers for the sessions.
A. show startup-config b. show running-config
Host A
A. replace a switch w/ a router b. subnet the new networks

41. What 2 type of cables would most commonly be used for new runs?
Next-Hop Address
A. low overhead b. connectionless
A. Cat5 UTP b. Cat6 UTP
TCP initializes the sequence numbers for the sessions.

42. Which IP packet field will prevent endless loops?
Time-to-live (TTL)
Is a layer of specific encapsulation.
Source and Destination Ports
Transport

43. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
The physical address is added.
A. next-hop b. metric/interface c. destination network address
A. application b. services
80 (HTTP)

44. What are 2 forms of application layer software?
Ctrl + Shift + 6
8
A. application b. services
A. low overhead b. connectionless

45. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Transport
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Resolve IPv4 addresses to MAC addresses.

46. What is a characteristic of a logical point-to-point topology?
The MAC protocol can be very simple.
OTDR
A backbone cable.
A. enable mode b. priviledge executive mode

47. In a connectionless system - What is correct?
A. enable mode b. priviledge executive mode
Twisting of the cables
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Destination is not contacted before a packet is sent.

48. If there is a graphic representation of a company network wiring and equipment - What is this called?
A. minimizing of collisions b. division into broadcast domains
2046
A physical topology.
Next-Hop Address

49. Intermediary devices used to implement security between networks
A. router b. firewall
A. Physical b. Data Link
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
SMB

50. Which 2 options represent Layer 4 addressing?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
To prevent the receiver from being overwhelmed by incoming data.
Network
Supports error detection.

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CCNA - 2

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