Data Communications and Networks Test
Bank
Course Introduction
Data Communications and Networks introduces students to the fundamental principles of data transmission, networking protocols, and network architectures. The course covers essential topics such as the OSI and TCP/IP models, network hardware, wireless and wired communication, error detection and correction, packet switching, routing algorithms, and network security. Students will explore how different types of networks local area networks (LANs), wide area networks (WANs), and the Internet are designed, implemented, and managed. Through practical assignments and laboratory exercises, learners will develop skills in network configuration, troubleshooting, and performance analysis, preparing them for careers in IT, computer science, and related fields.
Recommended Textbook
CWNA Guide to Wireless LANs Networking 2nd Edition by Mark Ciampa
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12 Chapters
504 Verified Questions
504 Flashcards
Source URL: https://quizplus.com/study-set/1032
Page 2
Chapter 1: Its a Wireless World
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41 Verified Questions
41 Flashcards
Source URL: https://quizplus.com/quiz/20462
Sample Questions
Q1) A Bluetooth network that contains one master and at least one slave device forms a
A) winet
B) subnet
C) piconet
D) cycle
Answer: C
Q2) Public ____________________ are locations where wireless data services are available.
Answer: hotspots
Q3) ____ is a low-power wireless data and voice transmission technology.
A) Bluetooth
B) AP
C) WAP
D) Wi-Fi
Answer: A
Q4) Many hospitals use laptop computers on mobile carts with barcode scanners or ____________________ readers and a wireless network interface card.
Answer: RFID
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Chapter 2: Wireless LAN Devices and Standards
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41 Verified Questions
41 Flashcards
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Sample Questions
Q1) Which IEEE committee establishes standards for wireless wide area networks?
A) 802.3
B) 802.11
C) 802.13
D) 802.16
Answer: D
Q2) What are the responsibilities of the FCC?
Answer: The FCC's responsibilities are very broad. In addition to developing and implementing regulatory programs, they also process applications for licenses and other filings, analyze complaints, conduct investigations, and take part in congressional hearings. They also represent the United States in negotiations with other nations about telecommunications issues.
Q3) The 802.11b standard can support wireless devices that are up to ____ meters apart.
A) 30
B) 90
C) 115
D) 130
Answer: C
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Page 4
Chapter 3: How Wireless Works
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41 Verified Questions
41 Flashcards
Source URL: https://quizplus.com/quiz/20464
Sample Questions
Q1) Highly-directional antennas are generally concave dish-shaped devices.
A)True
B)False
Answer: True
Q2) What is the shape of a Fresnel zone?
A) Circular
B) Rectangular
C) Ellipsoidal
D) Elliptical
Answer: C
Q3) The maximum EIRP for IEEE 802.11b WLANs is ____ mW.
A) 10
B) 100
C) 1000
D) 10,000
Answer: B
Q4) In a wireless transmission data travels on invisible radio waves.
A)True
B)False
Answer: True
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Chapter 4: IEEE 80211 Physical Layer Standards
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41 Verified Questions
41 Flashcards
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Sample Questions
Q1) What are the advantages to using DSSS with a chipping code?
Q2) What is a disadvantage of narrowband transmissions?
Q3) Users can upgrade from an 802.11b network to a faster 802.11g network simply by replacing the ____________________.
Q4) Into which layers are WLAN features isolated by IEEE standards?
A) PHY and PMD
B) MAX and PLCP
C) PHY and MAC
D) PMD and PLCP
Q5) There are two disadvantages to using U-NII. What are they?
Q6) Because wireless technology has advanced at such a rapid pace, the earliest WLANs are now essentially obsolete.
A)True
B)False
Q7) The modulation techniques used to encode the 802.11a data vary depending upon the speed. Describe the techniques used to transmit at 24 Mbps.
Q8) What are the fields that make up a PLCP frame?
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Q9) The 802.11g standard outlines two mandatory modes along with one optional mode. Describe each mode.
Chapter 5: IEEE 80211 Media Access Control and Network
Layer Standards
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41 Verified Questions
41 Flashcards
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Sample Questions
Q1) CSMA/CA eliminates the possibility of collisions.
A)True
B)False
Q2) Describe IP addresses and explain how they are allocated and used.
Q3) With MobileIP, the ____ assigns the mobile computer a new (but temporary) IP number.
A) local AP
B) foreign AP
C) foreign agent
D) roamed network
Q4) Why is CSMA/CD unsuitable for wireless networks?
A) Hidden node problem
B) difficult to detect collisions
C) difficult to synchronize backoff times
D) Both A and B
Q5) How does open system authentication work?
Q6) CSMA/CA reduces collisions is by using explicit frame acknowledgment. Describe how frame acknowledgment works.
Q8) What is a Basic Service Set? Page 7
Q7) Describe the three interframe spaces (IFS) defined in the 802.11 standard.
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Page 8
Chapter 6: Planning and Deploying a Wireless LAN
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41 Verified Questions
41 Flashcards
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Sample Questions
Q1) What are thin access points? Describe some of the benefits of using them.
Q2) Several vendors are working on comprehensive network management solutions that integrate wireless networks into the same deployment, operations, and management as a wired network.
A)True
B)False
Q3) The basic steps in planning include assessing needs, weighing the benefits, and calculating the ____________________.
Q4) Establishing and staffing an internal help desk is one of the most effective means of support.
A)True
B)False
Q5) What are some suggestions for preparing the help desk to deal with a wireless LAN deployment?
Q6) Wireless ____________________ provide a single mechanism for managing and monitoring the wireless network.
Q7) Early adopters of wireless LANs were sometimes called "racehorses".
A)True
B)False
9
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Chapter 7: Conducting a Site Survey
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41 Verified Questions
41 Flashcards
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Sample Questions
Q1) What are some of the times at which a site survey should be conducted?
Q2) When is the best time to perform a site survey?
A) quarterly
B) monthly
C) daily
D) prior to installing a WLAN
Q3) A drawback of spectrum analyzers is that the information is displayed in graphical form and not as raw data.
A)True
B)False
Q4) What is a spectrum analyzer?
Q5) The coverage ____________________ is the area in which the signal can be received from the AP.
Q6) What are the parts of a site survey report?
A) introduction section, graphical section
B) narrative section, graphical section
C) data section, conclusion section
D) data section, recommendation section
Q7) In addition to access points, what wireless tool(s) are required for a site survey?
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Chapter 8: Wireless LAN Security and Vulnerabilities
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41 Verified Questions
41 Flashcards
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Sample Questions
Q1) Cryptography is a new invention of the 20th Century.
A)True
B)False
Q2) RC4 is a ____ cipher that accepts keys up to 128 bits in length.
A) stream
B) key
C) cyclic
D) logical
Q3) Describe a man-in-the-middle attack.
Q4) Access ____________________ is intended to guard one of the three CIA characteristics of information, namely the availability of information.
Q5) On wireless networks, ____ attacks are commonly done by attackers setting up a "fake" access point.
A) spoof
B) weak key
C) DoS
D) man-in-the-middle
Q6) Describe at least four weaknesses of open system authentication.
Q7) What is a cracker?
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Chapter 9: Implementing Wireless Lan Security
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41 Verified Questions
41 Flashcards
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Sample Questions
Q1) ____ replaces CRC in WPA.
A) MIC
B) MRC
C) CMR
D) CMC
Q2) Most consumer access points are in reality wireless ____________________, because they combine the functions of an access point, router, network address translator, firewall, and switch.
Q3) Describe pre-shared key authentication.
Q4) The 802.11i standard addresses both ____.
A) encryption and confidentiality
B) integrity and confidentiality
C) authentication and direction
D) encryption and authentication
Q5) Pre-shared key (PSK) authentication uses a passphrase that is automatically generated to generate the encryption key.
A)True
B)False
Q6) Describe Advanced Encryption Standard (AES).
Q7) Describe Kerberos.
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Chapter 10: Managing a Wireless LAN
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41 Verified Questions
41 Flashcards
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Sample Questions
Q1) When updating firmware in an enterprise-level access point, the Receiving AP must be able to hear the IP ____ issued by the Distribution AP.
A) multicast
B) unicast
C) broadcast
D) netcast
Q2) What is Remote Monitoring?
Q3) Although data from the access point and devices can be beneficial, there are drawbacks to relying solely on these sources of information. What are the drawbacks?
Q4) Describe a sectorized antenna.
Q5) When conducting a security audit, ____ should determine vulnerabilities.
A) a highly-paid consultant
B) a wireless system administrator employed by the company
C) a junior administrator
D) a team with diverse backgrounds
Q6) What is an RF amplifier?
Q7) ____________________ engineering relies on tricking or deceiving someone to give a hacker access to a system.
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Chapter 11: Network Settings and Wireless LAN
Troubleshooting
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41 Verified Questions
41 Flashcards
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Sample Questions
Q1) When enabling Ethernet Timeout, the value in the Seconds field is generally set to between 30 and ____.
A) 40
B) 60
C) 90
D) 255
Q2) Dividing a wired network into ____ makes network management easier and decreases the spread of broadcast packets throughout the network.
A) segments
B) subnets
C) systems
D) routes
Q3) The Default IP Address and Default IP Subnet Mask fields are used only when ____ is enabled for the network.
A) DHCP
B) MAC
C) Mobile IP
D) Advanced IP
Q4) What is the purpose of the Ethernet Timeout setting on an access point?
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Chapter 12: Personal, Metropolitan, and Wide Area Wireless
Networks
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41 Verified Questions
41 Flashcards
Source URL: https://quizplus.com/quiz/20473
Sample Questions
Q1) What are the two different types of RFID tags?
Q2) There are several advantages of free space optics (FSO) compared to fiber optic and RF systems. List and describe them.
Q3) Describe wireless personal area networks.
Q4) The ZigBee group has drafted standards relating to network configuration, security, and other higher-level features that are not covered by the IEEE 802.15.4 standard.
A)True
B)False
Q5) Describe a geosynchronous earth orbit.
Q6) What type of wireless network is used for portable or stationary devices that are within 107 meters (350 feet) of each other or a centrally located access point?
A) WPAN
B) WLAN
C) WMAN
D) WWAN
Q7) In a cellular telephone network all of the transmitters and cell phones operate at a(n) ____________________ power level.
Page 15
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