Testové otázky

35. On request acces method is a:

• Static method

• Stochaistic method

• Deterministic, Dynamic, distributed

• Deterministic, Dynamic, centralized

36. CSMA access method is a:

• Static method

• Stochastic method

• Deterministic, Dynamic, distributed

• Deterministic, Dynamic, centralized

• Half-duplex

• Shared ethernet

37. Manchester encoding 10 baseT bandwidth is at least:

• 5 MHz

• 10MHz

• 1MHz

• 20MHz (shanon-kotelnikuv theorem, čili dvojnasobek vstupní hodnoty)

38. Hubs in circuit switched networks

• Only Full duplex

• Only Half duplex

• Only simplex

• Any kind of communication

39. Hubs used in 10G Base technology is possible to use:

• 2

• 1

• 2 but within 1 m from one another

• None

40. What type of cables can be used in 100Base-TX

• 2 pairs of UTP

• 4 pairs of UTP

• 2 coaxial cables

• 2 pairs of UTP, one for uplink, one for downlink

41. What type of UTP cable can be used in 100Base-TX

• Cat 5

42. Transmission capacity of cables - fastest?

• Coaxial

• UTP cat7

• Optic cable

43. 4B5B is a method:

• 4bit to 5 bit conversion

44. Ethernet_II Mac frame

• Type of payload

• Physical address of destination and source network

• Physical address of destination and source hardware

• DATA

• Destination address

• Source address

45. Spanning tree

• The Spanning Tree Algorithm (STA) disables link loops, by making them backup links that can be used in case the primary (active) links become unavailable.

• 3 version: STP - IEEE 802.1d / Rapid STP 802.1w / Multiple STP VLAN

• Prevents bridge loops, loop-free topology

46. SAP in OSI is:

• Service Access Point

47. Connectionless service in telephone communication - is it possible?

• Yes

• No

• Yes on transport layer only

48. IPv4 length

• 4bytes/32 bits

50. IPv6 lengh is 128 bits (compared with 32 bits in IPv4)

51. Which method is better for traffic load transmission

• Stochastic methods

• Deterministic methods

52. Purpose of presentation layer

• Compression

• Encryption

53. Is packet switching network suitable for real time transmission?

• Yes

• No

• No because urgent services can steal traffic flow

• Yes if the connection is not being trasmitted through satelites

:)

HARS

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