Tài liệu Trắc nghiệm Mạng Máy Tính pdf

a Application b Session c Transport d Network e Data Link f Physical 17 What topology provides each device with a point-to-point connection to every other device in the network?. a

1) IP, and IPX operate at what layer?

a) Presentation

b) Application

c) Session

d) Transport

e) Network

f) Data Link

2) What is, or is becoming the topology of choice for networks?

a) Bus

b) Star

c) Hierarchical

d) Mesh

3) If computers are connected along a single cable this is called what type of topology?

a) Star

b) Bus

c) Hierarchical

d) Mesh

4) 1000Base-T is not a Category 5 cable

a) True

b) False

5) Mesh topologies are the least expensive and are easier to maintain

a) True

b) False

6) RJ-45 connectors are used with ?

a) Coax

b) Fiber-optic

c) 1000Base-LX

d) 10BASE-T

7) A repeater works at the physical layers

a) True

b) False

8) In a star topology, if a hub fails all computers connected to it will also be affected

a) True

b) False

9) What type of topology is this ?

a) Mesh

b) Star

c) Hierarchical

d) Bus

10) Fiber networks use what kind of connectors?

a) SC

b) BNC

c) RJ-45

d) RJ-11

11) SC and ST connectors offer the same features as far as distance and reliability

a) True

b) False

12) Which layer do Repeaters, Hubs, Transceivers, and Amplifiers operate?

a) Application

b) Session

c) Transport

d) Network

e) Data Link

f) Physical

13) What layer handles data frames between the Network and Physical layers?

a) Presentation

b) Session

c) Transport

d) Network

e) Data Link

f) Physical

14) The number of computers on a bus network will NOT affect network performance

a) True

b) False

15) A line break at any point along the trunk cable in a Bus network will result in total network failure

a) True

b) False

16) DNS, FTP, SNMP, SMTP, and TELNET are all protocols that use what layer?

a) Application

b) Session

c) Transport

d) Network

e) Data Link

f) Physical

17) What topology provides each device with a point-to-point connection to every other device in the network?

a) Star

b) Bus

c) Mesh

d) Hierarchical

18) What OSI layer encodes and converts user information into binary data Provides protocol conversion, encryption, and compression?

a) Application

b) Presentation

c) Session

d) Transport

e) Network

f) Data Link

19) In a basic Ring topology, if there is a line break, or if you are adding or removing a device anywhere in the ring this will bring down the network

a) True

b) False

20) This layer represents the services, that directly support the user applications such as software for file transfers, database access, and e-mail

a) Application

b) Session

c) Transport

d) Network

e) Data Link

f) Physical

21) RJ-45 connectors resemble telephone RJ-11 connectors, but are larger and house 12 wires

a) True

b) False

22) 10Base-2 is also refered too as ?

a) Thicknet

b) Thinnet

c) unshielded twisted-pair

d) Category 3

23) Defines cabling and connections

a) Presentation

b) Session

c) Transport

d) Network

e) Data Link

f) Physical

24) Ring topology is an?

a) active topology

b) static topology

c) passive topology

d) dynamic topology

25) This is an ?

a) BNC barrel connector

b) SC connector

c) ST connector

d) RJ-45 connector

26) A BNC connector is for ?

a) Coaxial

b) Fiber-optic

c) Category 5

d) 10Base-T

27) Ethernet is also known as?

a) 802.5

b) 803.2

c) 802.11b

d) 802.3

28) If one computer fails in a star topology the network will continue to function

a) True

b) False

29) The maximum segment length of 10Base-5 is ?

a) 500 m

b) 100 m

c) 2000 m

d) 187 m

30) This is an ?

a) RJ-45 connector

b) SC connector

c) ST connector

d) BNC connector

31) Ethernet uses the Carrier Sense Multiple Access with Collision Detection access method

a) True

b) False

32) Token Ring networks usually use coax cables

a) True

b) False

33) The maximum transfer speed of 10Base-5 is ?

a) 100 Mbps

b) 2 Mbps

c) 1 Gbps

d) 10 Mbps

34) TCP, and SPX operate at what layer ?

a) Presentation

b) Session

c) Transport

d) Network

e) Data Link

f) Physical

35) Standard telephone cable connectors, usually have 4-6 wires

a) True

b) False

36) The maximum segment length of 100Base-FX at half duplex is?

a) 200 meters

b) 500 meters

c) 1000 meters

d) 2000 meters

37) What type of topology is this ?

a) Mesh

b) Star

c) Hierarchical

d) Bus

38) STP cable protects signals from cross signaling that can result from other, nearby cables

a) True

b) False

39) Token Ring standards define services for the OSI, MAC sublayer of the data link layer, and what other layer ?

a) Application

b) Session

c) Physical

d) Network

40) Wireless Ethernet

a) 802.5

b) 803.2

c) 802.11b

d) 802.3

41) OSI layer that defines cables, NIC cards?

a) Presentation

b) Session

c) Application

d) Physical

e) Network

f) Transport

42) Fiber Distributed Data Interface, shares many of the same features as?

a) Ethernet

b) Token rings

c) Wireless Ethernet

43) A NIC works at the Data Link layer

a) True

b) False

44) The Data Link layer is really two separate layers what are they ?

a) Frame Access Control and Logical Link Control

b) Logical Link Control and Media Access Control

c) Link Control and Access Control

d) Data Link Control and Network Access Control

45) A BNC barrel connector is used to connect two cables together, and increase the signal

strength

a) True

b) False

46) Computers on a bus only listen for data being sent they do not move data from one computer

to the next, this is called ?

a) Active topology

b) passive topology

c) static topology

d) dynamic topology

47) A Bridge, and Switch work at what layer ?

a) Application

b) Presentation

c) Session

d) Network

e) Data Link

f) Physical

48) SC and ST connectors can be used in the same network with the use of adapters or couplers

a) True

b) False

49) Opens manages, and closes conversations between two computers, also performs name recognition and functions such as security, this describes what layer ?

a) Application

b) Presentation

c) Session

d) Transport

e) Network

f) Data Link

50) Most Bus networks use what kind of cables ?

a) unshielded twisted-pair

b) 10Base-T

c) 100Base-TX

d) coax

51) 1000Base-SX is a Fiber-optic cable

a) True

b) False

52) This is an?

a) T connector

b) SC connector

c) ST connector

d) RJ-45 connector

53) What OSI layer manages who can transmit data at a certain time and for how long?

a) Application

b) Presentation

c) Session

d) Transport

e) Network

f) Data Link

54) Redirectors operate at what layer?

a) Application

b) Presentation

c) Transport

d) Network

e) Data Link

f) Physical

55) A Gateway works at the Application, Presentation, Session, and Transport layers

a) True

b) False

56) Since most star topologies use twisted-pair cables, this makes the initial installation of star networks easier

a) True

b) False

57) NetBEUI operates at both the Network and Transport

a) True

b) False

58) What OSI layer translates logical network address and names to their physical address?

a) Application

b) Presentation

c) Session

d) Transport

e) Network

f) Data Link

59) What type of topology is this?

a) Mesh

b) Star

c) Hierarchical

d) Bus

60) Which RAID level is disk mirroring associated with ?

a) RAID0

b) RAID1

c) RAID2

d) RAID3

e) RAID4

f) RAID5

61) How does a server recognize the requested TCP/IP service of an IP-Packet ? a) MAC Address

b) Port number

c) Destination address

d) Source address

e) IP Address