Microsoft Microsoft Certifications 98-366 Questions & Answers

• Question 121:

  A VPN is a/an:

  A. Encrypted connection across the Internet.

  B. Virtual network within your local area network (LAN).

  C. Communication tunnel between VLANs.

  D. Personal network for your use only.

  Correct Answer: A

  VPN is a network that is constructed by using public wires -- usually the Internet -- to connect to a private network, such as a company's internal network.

  There are a number of systems that enable you to create networks using the Internet as the medium for transporting data. These systems use encryption and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.

• Question 122:

  Which technology provides the highest bit rate?

  A. T1

  B. El

  C. DS3

  D. ISDN

  Correct Answer: C

  A DS3 line (sometimes also referred to as T3) is a dedicated, high bandwidth, fiber circuit with a speed of 45 Mbps.

  Incorrect: Not A: T1, 1.544Mbps Not B: E1, 2.048Mbps Not D: SDN 30B+1D (all 64K) ~ E1: 1.930Mbps

• Question 123:

  What happens when an 802.11b node starts broadcasting within the range of an 802.llg access point?

  A. The access point will transmit, but the node will be unable to receive.

  B. A connection will be established.

  C. Both the node and the access point will be unable to transmit.

  D. The node will transmit, but the access point will be unable to receive.

  Correct Answer: B

  802.11g hardware is fully backward compatible with 802.11b hardware.

• Question 124:

  Which two are published IEEE 802.11 wireless transmission standards? (Choose two.)

  A. 802.1 If

  B. 802.11g

  C. 802.11k

  D. 802.11m

  E. 802.11n

  Correct Answer: BE

  The 802.11 family consists of a series of half-duplex over-the-air modulation techniques that use the same basic protocol. 802.11-1997 was the first wireless networking standard in the family, but 802.11b was the first widely accepted one, followed by 802.11a, 802.11g, 802.11n, and 802.11ac.

• Question 125:

  Which technology can you use to extend an internal network across shared or public networks?

  A. VLAN

  B. Microsoft ASP-NET

  C. Microsoft .NET Framework

  D. VPN

  Correct Answer: D

  VPN is a network that is constructed by using public wires -- usually the Internet -- to connect to a private network, such as a company's internal network.

• Question 126:

  In a physical star topology, the central device is referred to as a:

  A. Bridge

  B. Server

  C. segmenter

  D. Hub

  Correct Answer: D

  In local area networks with a star topology, each network host is connected to a central hub with a point-to-point connection.

• Question 127:

  In local area network (LAN) topologies, the primary media access methods are: (Choose two.)

  A. Contention

  B. Negotiation

  C. Kerberos

  D. Token passing

  Correct Answer: AD

  Media contention occurs when two or more network devices have data to send at the same time. Because multiple devices cannot talk on the network simultaneously, some type of method must be used to allow one device access to the network media at a time. This is done in two main ways: carrier sense multiple access collision detect (CSMA/CD) and token passing.

• Question 128:

  Which type of network covers the broadest area?

  A. WAN

  B. CAN

  C. LAN

  D. PAN

  Correct Answer: A

  A wide area network (WAN) is a network that covers a broad area (i.e., any telecommunications network that links across metropolitan, regional, national or international boundaries) using leased telecommunication lines.

• Question 129:

  Attenuation in a wireless network signal is a result of:

  A. Number of wireless nodes connected.

  B. Distance from the access point.

  C. Interference from cellular phones.

  D. Encryption of the signal.

  Correct Answer: B

  Solid objects greatly attenuate (reduce) Wi-Fi radio signals, so clear line of sight is best.

• Question 130:

  Which type of network is most vulnerable to intrusion?

  A. Dial-up

  B. Wireless

  C. Broadband

  D. Leased line

  Correct Answer: B

  Insecure Wi-Fi is the easiest way for people to access your home network, leech your internet, and cause you serious headaches with more malicious behavior.