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ACA Questions ( without answers ) part 1 1

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Introduction to Networking

1. Ethernet networks first used which of the following cable types:
A. Fiber Optics
B. Twisted Pair
C. Microwave
D. Coaxial Cable

2. The terminator used with coaxial cable prevents:
A. Cable breakage
B. Signal reflections
C. Tampering with the cable
D. Signal losses

3. The maximum distance a signal can travel using 10Base5 is:
A. 100 meters
B. 200 meters
C. 500 meters
D. 1000 meters

4. Which two topologies are configured as a physical star but operate as a logical bus? (Choose two.)
A. 10base2
B. 10baseT
C. 100baseTx
D. 100baseVG-AnyLAN

5. Which two LAN topologies will not function when a single wire is broken? (Choose two.)
A. bus
B. star
C. ring
D. mesh
E. star-bus

6. Which IEEE specification describes Token Ring?
A. 800.6
B. 802.3
C. 802.4
D. 802.5

7. Twisted pair wires are twisted to:
A. extend the life of the cable
B. provide for higher security
C. reduce the amount of electrical interference
D. ease cable installation and termination

8. Multimode fiber optic cable most often uses which of the following to represent binary information:
A. Twisted Pair
B. Cladding
C. LEDs
D. Laser light

9. The network topology that uses a single wire or cable to connect devices together is referred to as
A. Bus topology
B. Broadcast topology
C. Loop topology
D. Star topology

10. Which two items are associated with the 10baseT networking structure? (Choose two.)
A. BNC
B. AUI
C. RG58
D. CAT5
E. RJ-11
F. RJ-45

11. Which IEEE standard covers LANs using Carrier-Sense Multiple Access with Collision Detection (CSMA/CD)?
A. 802.3
B. 802.5
C. 802.11
D. 802.12

12. Which type of network has ten or fewer computers connected by cable for the direct sharing of file and hardware resources?
A. peer-to-peer
B. client/server
C. peer-to-server
D. server-to-server

13. The maximum data rate for thinnet and thicknet is:
A. 1 Mbps
B. 10 Mbps
C. 100 Mbps
D. 1 Gbps

14. A 10BaseT star topology uses which of the following to connect the computers?
A. Repeater
B. Hub
C. Bridge
D. MAU

15. The OSI model consists of:
A. 5 layers
B. 6 layers
C. 7 layers
D. 8 layers

16. Which two unlicensed frequencies are used for spread spectrum wireless Local-Area Network (LAN) devices? (Choose two.)
A. 860 Mhz
B. 915 Mhz
C. 2.412 Ghz
D. 2.842 Ghz
E. 5.630 Ghz

17. Which three work at Layer 2 of the OSI Model? (Choose three.)
A. bridge
B. switch
C. vampire tap
D. network interface card


18. Which two work at Layer 3 of the OSI Model? (Choose two.)
A. router
B. bridge
C. e-mail
D. Internet Protocol (IP)
E. Transmission Control Protocol (TCP)

19. An Intranet server is essentially a:
A. Print Server
B. File Server
C. Communication Server
D. Web Server

20. Which layer of the OSI Model is responsible for data compression?
A. Session Layer
B. Transport Layer
C. Network Layer
D. Presentation Layer

21. Which of the following is an example of a Transport Layer protocol?
A. Ethernet
B. IP
C. TCP
D. RS-232

22. Which of the layers below is most concerned with forwarding a packet through a network from the source host, through intermediate hops, to the final destination:
A. Transport
B. Network
C. Data Link
D. Physical

23. While a packet is traversing a network, the intermediate nodes between the source and destination will deal with which protocol layers:
A. From Presentation Layer down
B. From Session Layer down
C. From Transport Layer down
D. From Network Layer down

24. Which technology does 11 Mbit wireless devices use?
A. IEEE 802.1d
B. Frequency Modulation System
C. Amplitude Modulation System
D. Direct Sequence Spread Spectrum
E. Frequency Hopping Spread Spectrum

25. A message, packet, and a frame refer to which three layers (in order):
A. Presentation, Session, Transport
B. Session, Transport, Network
C. Transport, Network, Data Link
D. Network, Data Link, Physical

26. What enables you to segment separate collision domains on different physical locations?
A. bridge
B. gigabit switch
C. fast Ethernet hub
D. Virtual Local Area Network (VLAN)

27. What is an example of a Network Layer protocol?
A. Ethernet
B. IP
C. TCP
D. RS-232

28. What is the primary purpose of a Network Layer protocol?
A. Transmit bits across a physical link
B. Transmit frames across a physical link
C. Transmit packets across a network
D. Transmit frames across a network

29. A 50-pair cable runs between two buildings. What should you use to terminate the cable?
A. RJ-50
B. router
C. split 50 block
D. split 66 block

30. A 25-pair cable runs from a building's ninth floor to the tenth floor. What should you use to terminate the cable?
A. RJ-45
B. 66 block
C. 25 block
D. channel bank

31. Which two networking devices use a Spanning Tree algorithm to prevent active loops? (Choose two.)
A. hub
B. bridge
C. switch
D. gateway

32. One of the services provided by the Data Link Layer to the Network Layer is:
A. The delivery of the network layer information to the next node in the network
B. The delivery of the network layer information to the final destination in thenetwork
C. The delivery of the application layer information to the final destination in the network
D. The error-free delivery of the application data

33. The Network Layer is to packets as the Data Link Layer is to:
A. Frames
B. Signals
C. Protocol suites
D. Datagrams

34. Which of the following is an example of decapsulation?
A. Stripping the header and trailer from an incoming frame.
B. Putting a header and a trailer on an outgoing message.
C. Putting a header and a trailer on an outgoing frame.
D. Stripping a header and a trailer from an incoming message.

35. The purpose of a Data Link Layer protocol is to:
A. Transmit messages to the correct process
B. Transmit packets to the end node
C. Transmit frames to the next node
D. Transmit bits across a physical link

36. What part of a computer generates a frame by encapsulating a packet:
A. Media adapter unit
B. Node port
C. Network Interface Card
D. Hub

37. Which of the following is a concern at the physical layer?
A. Whether or not the data is ASCII or EBCDIC
B. How a binary zero is represented versus a binary one
C. The error free delivery of frames
D. The length of a packet

38. What is the primary purpose of a Physical Layer protocol?
A. Transmit bits across a physical link
B. Transmit frames across a physical link
C. Transmit packets across a network
D. Transmit bits across a network

39. The layer that is responsible for moving frames between NICs in a LAN is:
A. Physical
B. Data Link
C. Network
D. Transport

40. You have been tasked with setting up a LAN/WAN infrastructure. You have ten stand-alone PCs and a new Frame Relay circuit to the Internet Service Provider. Which two pieces of data networking equipment allow the ten PCs to share files and access the Internet? (Choose two.)
A. hub
B. router
C. bridge
D. repeater
E. Remote Access Server (RAS)

41. You need to interconnect offices on several floors of a large office building. The customer wants high-speed and reliable connections between floors. Which device should you use to interconnect the floors?
A. bridge
B. gateway
C. CSU/DSU
D. gigabit switch

42. Which of the following is a function of hubs and repeaters?
A. Provide for cable extension
B. Repeat digital signals
C. Interconnect different cable types
D. All of the above

43. Why shouldn't hubs and repeaters be used to interconnect LANs:
A. They are too expensive
B. They are too powerful
C. They do not manage traffic efficiently enough
D. They do not extend the physical segment adequately

44. An Ethernet switch normally operates at which layer of the OSI model?
A. Data Link
B. Application
C. Transport
D. Physical

45. A Layer 2 switch switches:
A. frames
B. packets
C. bits
D. sockets

46. Which items connect LANs at the Network Layer?
A. bridge
B. router
C. Data Service Unit (DSU)
D. Channel Service Unit (CSU)

47. Which device runs at Layer 3 of the Open Systems Interconnect (OSI) model?
A. hub
B. router
C. bridge
D. repeater

48. Which two data networking devices are the most protocol independent? (Choose two.)
A. bridge
B. router
C. brouter
D. repeater

49. Which Local-Area Network (LAN) device takes a network frame, reads its header, and then directs it to the proper port?
A. hub
B. switch
C. repeater
D. amplifier

50. In what two ways is the term gateway used:
A. as a router and a switch
B. as a router and a protocol converter
C. as a protocol converter and a switch
D. as a switch and a repeater

51. The Data Link Layer of the OSI Model has which two sublayers? (Choose two.)
A. Logical Link Control
B. Media Access Control
C. Network Link Control
D. Data Location Control
E. Media Access Connection

52. In a client/server arrangement, where are the requests normally generated:
A. Client
B. Server
C. Slave
D. Master

53. If an operating system is said to be peer-to-peer only, this means:
A. A dedicated server is not used
B. A dedicated server is used, but only for printer sharing
C. A dedicated server is only used for Email
D. A dedicated server is not used except for Internet access

54. File sharing between two nodes of equal power and functionality is referred to as:
A. Client/Server
B. Master Slave
C. Client/Peer
D. Peer-to-peer

55. Which statement correctly describes a network backbone?
A. The portion of a network where all devices are connected
B. The portion of a network that carries traffic between workgroups
C. The most congested part of the network
A. The least critical part of the network

56. What allows you to separate workstations into collision domains?
A. hub
B. bridge
C. repeater
D. CSU/DSU

57. Which IEEE specification describes Token Bus?
A. 802.2
B. 802.3
C. 802.4
D. 802.5
E. 802.11

58. Which two are components of a structured cabling system? (Choose two.)
A. RJ-45
B. mouse
C. 66 block
D. multiplexer
E. Primary Rate Interface (PRI) T-1
F. Plain Old Telephone Service (POTS) Line


 
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