CCNA试题40-59答案
40. [OxNx] Which of the following layers sends and receives binary information?
a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1
Answer
g) Physical Layer 1
41. [OxNx] Which of the following layers provides end to end connections?
a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1
Answer
d) Transport Layer 4
42. [OxNx] Which of the following layers would most likely provide connection oriented service.
a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1
Answer
d) Transport Layer 4
43. [OxNx] Which of the following layers controls access to the media?
a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1
Answer
f) Data Link Layer 2
44. [OxNx] Which of the following layers defines network addressing and determines the best path?
a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1
Answer
e) Network Layer 3
45. [OxNx] Raw data is converted to segments at which layer?
a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1
Answer
d) Transport Layer 4
46. [OxNx] Segments are converted to Datagrams at which layer?
a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1
Answer
e) Network Layer 3
47. [OxNx] Datagrams are converted to frames at which layer?
a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1
Answer
f) Data Link Layer 2
48. [OxNx] Frames are converted to Bits at which layer?
a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1
Answer
g) Physical Layer 1
49. [OxNx] Which of the following could be a feature of a connection-oriented service?
a) Flow Control
b) "Three-Way" hand shake
c) Error checking
d) Windowing
e) All of the above
Answer
e) All of the above
50. [OxNx] With a connection-oriented service a host will ACK (Acknowledge) with: (Answer all that apply)
a) The last (SEQ) sequence number received from the remote host
b) The next expected (SEQ) sequence number from the remote host
c) The last ACK number from the remote host
d) The current SEQ number from the remote host "plus" 1
e) None of the above
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