Microsoft Microsoft Certifications 98-366 Questions & Answers

• Question 51:

  For which two reasons should you use IPsec between computers? (Choose two.)

  A. Data compression

  B. Data integrity

  C. Data redundancy

  D. Data confidentiality

  Correct Answer: BD

  IPSEC (Internet Protocol Security) is a security protocol that provides encryption and authentication over the Internet. IPSEC supports network-level data integrity, data confidentiality, data origin authentication, and replay protection.

• Question 52:

  What are three advantages of VLANs? (Choose three.)

  A. They can logically address packets by using IP.

  B. They require a router to connect to VLANs on another switch.

  C. They compartmentalize a network and isolate traffic.

  D. They are efficient because a single switch can implement only a single VLAN.

  E. They act as though they are on the same LAN regardless of physical location.

  Correct Answer: BCE

  VLANs provide the following advantages:

  *

  (E) VLANs enable logical grouping of end-stations that are physically dispersed on a network. ...

  *

  VLANs reduce the need to have routers deployed on a network to contain broadcast traffic. ...

  *

  (C) Confinement of broadcast domains on a network significantly reduces traffic.

  By confining the broadcast domains, end-stations on a VLAN are prevented from listening to or receiving broadcasts not intended for them.

  *

  (B) If a router is not connected between the VLANs, the end-stations of a VLAN cannot communicate with the end-stations of the other VLANs.

• Question 53:

  Which feature of Category 5e STP cable reduces external interference?

  A. Crosstalk

  B. Shielding

  C. Length

  D. Twisting

  Correct Answer: D

  Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of canceling out electromagnetic interference (EMI) from external sources.

• Question 54:

  What is the bit rate for a North American T3 circuit?

  A. 6.312 Mbit/s

  B. 44.736 Mbit/s

  C. 274.176 Mbit/s

  D. 400.352 Mbit/s

  Correct Answer: B

  Data Rates. DS3/T3 = 44.7 Mbps

• Question 55:

  Which IEEE 802.11 Wi-Fi networking standard requires dual antennas so it can run in all of its supported frequencies?

  A. 802.11a

  B. 802.11b

  C. 802.11g

  D. 802.11n

  Correct Answer: D

  IEEE 802.11n-2009, commonly shortened to 802.11n, is a wireless networking standard that uses multiple antennas to increase data rates.

• Question 56:

  You run the ipconfig command. The output is shown in the following image:

  

  From these settings, you can tell that the computer:

  A. Will have limited Internet access

  B. Will have full Internet access

  C. Will not be able to access the Internet

  D. Will not be able to access the local network

  Correct Answer: A

• Question 57:

  This question requires that you evaluate the underlined text to determine if it is correct.

  The loopback address of your computer is "127.0.0.1".

  Select the correct answer if the underlined text does not make the statement correct. Select 'No change is needed" if the underlined text makes the statement correct.

  A. 10.0.1.1

  B. 169.254.0.5

  C. 192168.1.1

  D. No change is needed

  Correct Answer: D

  127.0.0.1 is the IPv4 loopback address.

• Question 58:

  This question requires that you evaluate the underlined text to determine if it is correct.

  "A/anvirtual private network (VPN)" protects a network's perimeter by monitoring traffic as it enters and leaves.

  Select the correct answer if the underlined text does not make the statement correct. Select 'No change is needed" if the underlined text makes the statement correct.

  A. Extranet

  B. Firewall

  C. Intranet

  D. No change is needed

  Correct Answer: B

  A firewall is software or hardware that checks information coming from the Internet or a network, and then either blocks it or allows it to pass through to your computer, depending on your firewall settings.

• Question 59:

  A node within a local area network (LAN) must have which two of the following? (Choose two.)

  A. Username and password

  B. Share name

  C. NIC

  D. IP address

  E. Table of all network nodes

  Correct Answer: CD

  A node must be able to access the LAN through a network interface. A node must also have an IP address.

• Question 60:

  This question requires that you evaluate the underlined text to determine if it is correct.

  When a client computer is unable to reach a DHCP server, it will automatically assign an IP address in the "10.0.0.0 -10.0.0.255" range.

  Select the correct answer if the underlined text does not make the statement correct. Select 'No change is needed" if the underlined text makes the statement correct.

  A. 127.0.0.0-127.0.0.255

  B. 169.254.0.0-169.254.255.255

  C. 192168.100.0 -192.168.100.255

  D. No change is needed

  Correct Answer: B

  169.254.0.0 - 169.254.255.255 is the APIPA address range. An APIPA address is used when the DHCP server is not available.