EC-COUNCIL EC-COUNCIL Certifications 312-38 Questions & Answers

• Question 321:

  Which of the following IEEE standards adds QoS features and multimedia support?

  A. 802.11b

  B. 802.11e

  C. 802.5

  D. 802.11a

  Correct Answer: B

• Question 322:

  In which of the following transmission modes is data sent and received alternatively?

  A. Simplex mode

  B. Bridge mode

  C. Half-duplex mode

  D. Full-duplex mode

  Correct Answer: C

• Question 323:

  Which of the following OSI layers is sometimes called the syntax layer?

  A. Presentation layer

  B. Application layer

  C. Physical layer

  D. Data link layer

  Correct Answer: A

• Question 324:

  Which of the following key features limits the rate a sender transfers data to guarantee reliable delivery?

  A. Ordered data transfer

  B. Error-free data transfer

  C. Flow control

  D. Congestion control

  Correct Answer: C

• Question 325:

  Which of the following protocols sends a jam signal when a collision is detected?

  A. ALOHA

  B. CSMA/CA

  C. CSMA/CD

  D. CSMA

  Correct Answer: C

• Question 326:

  Which of the following layers provides communication session management between host computers?

  A. Application layer

  B. Internet layer

  C. Transport layer

  D. Link layer

  Correct Answer: C

• Question 327:

  Which of the following layers of the OSI model provides physical addressing?

  A. Application layer

  B. Network layer

  C. Physical layer

  D. Data link layer

  Correct Answer: D

• Question 328:

  Which of the following IEEE standards defines the token passing ring topology?

  A. 802.4

  B. 802.5

  C. 802.3

  D. 802.7

  Correct Answer: B

• Question 329:

  Which of the following layers is closest to the end user?

  A. Application layer

  B. Physical layer

  C. Session layer

  D. Presentation layer

  Correct Answer: A

• Question 330:

  Which of the following flags is set when a closed port responds to an Xmas tree scan?

  A. RST

  B. ACK

  C. PUSH

  D. FIN

  Correct Answer: A