HP HP Certifications HPE3-U01 Questions & Answers

• Question 1:

  What is the binary equivalent of the Hexadecimal number 17?

  A. 11001

  B. 10111

  C. 10001

  D. 1110001

  Correct Answer: B

• Question 2:

  What is a characteristic of IPv4 addresses?

  A. It is 32 bits long

  B. It is 128 bits long

  C. 12 hex-digit notation

  D. Has zero compression rule

  Correct Answer: A

• Question 3:

  Which protocols operate on the Management Plane? (Select two.)

  A. Transmission Control Protocol

  B. Address Resolution Protocol

  C. Spanning Tree Protocol

  D. Hypertext Transfer Protocol Secure

  E. Secure Shell

  Correct Answer: CE

• Question 4:

  What are the key differences between L2 switches and routers? (Select two.)

  A. Switches build an ARP table, while routers build a port table.

  B. Switches build a MAC table while routers build a routing table.

  C. Switches are considered L2 devices, while routers are L4.

  D. Switches offer a considerably higher port density than routers.

  E. Routers offer a considerably higher port density than switches.

  Correct Answer: BD

• Question 5:

  What is considered a Layer 2 component?

  A. Router

  B. Switch

  C. Transceiver

  D. UTP cable

  Correct Answer: B

• Question 6:

  Which unit of measurement is recommended for expressing radio frequency power due to its logarithmic nature?

  A. lumens

  B. decibel relative to isotrope (dBi)

  C. milliwatt (mW)

  D. decibel relative to milliwatt (dBm)

  Correct Answer: D

  Decibel (dB)Decibel is a logarithmic unit of measure used to express the ratio of two values of the same measure. This unit is not included to the System International of units (SI), but it is widely used in communication systems and many other technical fields, as it allows to compare two values of any nature, provided that these values are expressed in the same unit. Decibel is a decile of the main, larger unit -- Bel. Bel is a common logarithm of the ratio of two energies. But in practice Bel was a far too big value, therefore its tenth part is used ?decibel. The logarithmic method of presentation of numbers often can be very useful, as it allows to replace multiplication with addition, division with subtraction, raising to power with multiplication, and extracting a root with the division. What is measured in dB in the MRFC: Gain constant Sound level Signal/noise ratio Signal attenuation

  https://en.cyclopedia.ifcg.ru/wiki/Radiofrequency_characteristics

• Question 7:

  What is part of the 5 GHz band?

  A. Channel 12 and 13

  B. U-NII 5

  C. Channels 149 to 161

  D. Channel14

  Correct Answer: C

• Question 8:

  What are the nonoverlapping channels for Wi-Fi communications in the 2.4 Ghz band?

  A. 1,6,11,andl3

  B. 1,6, and 11

  C. 1.7,11, and 14

  D. 1,7, and 13

  Correct Answer: B

• Question 9:

  Which organization is in charge of determining the International Standards?

  A. Institute of Electrical and Electronics Engineers

  B. Wi-Fi Alliance

  C. Federal Communications Commission

  D. Internet Engineering Task Force

  Correct Answer: D

• Question 10:

  Which protocol provides frame delivery using physical addressing and error detection using frame check sequence?

  A. Link Layer Discovery Protocol

  B. Ethernet

  C. TCP/IP

  D. User Datagram Protocol

  Correct Answer: A