Network Administration
Pre-Test Questions
Course Introduction
Network Administration is a comprehensive course that introduces students to the principles and practices of managing computer networks within organizations. It covers essential topics such as network architecture, configuration, maintenance, troubleshooting, and security. Students will gain hands-on experience with network operating systems, user and resource management, and network services such as DNS, DHCP, and file sharing. Emphasis is placed on both wired and wireless network environments, enabling students to design, implement, and monitor network infrastructure effectively. By the end of the course, students will be prepared to support and optimize organizational networks, ensuring efficient and secure connectivity.
Recommended Textbook
CWNA Guide to Wireless LANs 3rd Edition by Mark Ciampa
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13 Chapters
535 Verified Questions
535 Flashcards
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Chapter 1: The World of Wireless
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40 Verified Questions
40 Flashcards
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Sample Questions
Q1) Latency is a phenomenon with wireless networks that cause packets to move through a wireless network faster than on a wired network.
A)True
B)False
Answer: False
Q2) Which is a solution to the last mile connection problem?
A) backhaul connection
B) fiber-optic LAN
C) coaxial cable network
D) wireless ISP
Answer: D
Q3) Which of the following is least likely to have a built-in wireless connection?
A) tablet
B) smartphone
C) server
D) laptop
Answer: C
Q4) Public ____________________ are locations where wireless data services are available.
Answer: hotspots
Page 3
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Chapter 2: Wireless Local Area Networks
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40 Flashcards
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Sample Questions
Q1) Which IEEE standard added speeds of 5.5 and 11 Mbps to the WLAN standards?
A) 802.11a
B) 802.11b
C) 802.11g
D) 802.11i
Answer: B
Q2) If you are installing an access point on a ceiling,but find there are no electrical outlets nearby to provide power to the AP,what technology should you deploy?
A) WCN
B) SoftAP
C) POE
D) Virtual Wifi
Answer: C
Q3) What are the two functions of an access point?
Answer: First, the access point acts as the base station for the wireless network. Any device with a wireless NIC transmits its signal to an AP, which can then redirect the signal, if necessary, to other wireless devices. The second function of an AP is to act as a bridge between the wireless and wired networks.
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4
Chapter 3: Radio Frequency Fundamentals
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41 Flashcards
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Sample Questions
Q1) Power of an electromagnetic signal such as one used in WLANs is measured by which unit?
A) millivolts
B) milliamps
C) milliohms
D) milliwatts
Answer: D
Q2) Which of the following are used to describe the behaviors of waves as they propagate? (Choose all that apply.)
A)diffraction
B)scattering
C)resistance
D)absorption
Answer: A, B, D
Q3) Whenever a wave moves to the maximum voltage,then down to the minimum voltage,and then returns back to the starting point,it has finished two cycles.
A)True
B)False
Answer: False
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Page 5
Chapter 4: Antennas
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Sample Questions
Q1) Which technique uses a process in which the sending device codes or assigns weights to the signals before sending them which results in improved reliability?
A) spatial diversity
B) maixmal ratio combining C) transmit beam forming
D) spatial multiplexing
Q2) Which type of antenna is used for long-distance point-to-point wireless links?
A) omnidirectional
B) unidirectional
C) semidirectional
D) highly-directional
Q3) The strength of a signal from an omnidirectional antenna flows out 90 degrees from the antenna's orientation.
A)True
B)False
Q4) What are highly-directional antennas typically used for?
Q5) What does an antenna's beamwidth indicate?
Q6) List the four singaling processing techniques employe by MIMO to achieve high throughput.
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Chapter 5: Physical Layer Standards
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Sample Questions
Q1) Name and describe the fields that make up a PLCP frame?
Q2) Narrowband transmissions require significant power for the signal to be transmitted because the signal must exceed the ____________________,or the total amount of outside interference,by a substantial margin.
Q3) In FHSS,the amount of time needed to move from one frequency to another is the ____ time.
A) dwell
B) switch
C) lift
D) hop
Q4) A 1 Mbps transmission rate is achieved by sending a single symbol every microsecond.
A)True
B)False
Q5) Because of the relatively high speeds achieved with FHSS,it is widely implemented in WLAN systems.
A)True
B)False
Q6) What are the two basic concepts involved with OFDM?
Q7) From top to bottom,list the 7 layers of the OSI model.
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Chapter 6: Medium Access Control Layer Standards
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Sample Questions
Q1) Define Extended Service Set.
Q2) Describe passive scanning.
Q3) Which is true about wireless authentication methods?
A) open system authentication is an optional secure authentication method
B) shared key authentication requires manual key installation
C) open system authentication uses a 128-bit encryption key
D) only the SSID must be known when using shared key authentication
Q4) A major function of the MAC layer involves defining procedures for a wireless device to discover the WLAN.
A)True
B)False
Q5) In which access method does the access point serve as the polling device?
A) PCF
B) DCF
C) CSMA/CA
D) contention
Q6) ____________________ is a means of reducing collisions and involves dividing the data to be transmitted from one large frame into several smaller ones.
Q7) Describe Mobile IP.
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Chapter 7: WLAN Management and Architectures
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Sample Questions
Q1) Which is true of a wireless mesh network?
A) they use only autonomous APs
B) each AP communicates directly to the wired network
C) only one AP must be connected to the wired network
D) a maximum of 10 APs can be on each network
Q2) Access points that support wireless ______________ may support 16 or more multiple SSIDs.
Q3) The capability to prioritize different types of frame is know as _________________.
Q4) Which technology works by inserting a tag header within the existing Ethernet packet?
A) enhanced distributed channel access
B) 802.1Q trunking
C) Wi-Fi Multimedia
D) Point Coordinated Function
Q5) What are the advantages and limitations of autonomous access points?
Q6) BSS and ESS service set configurations remain the preferred choice for homes and SOHOs.
A)True
B)False
Page 9
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Chapter 8: Conducting a Site Survey
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Sample Questions
Q1) Describe a predictive site survey.
Q2) RSSI should not be relied on as a valid indicator of signal strength because of which reason?
A) they only give an approximation of the information needed for a site survey
B) RSSI values always display the strength of the signal in mW
C) RSSI indicators are only available on Windows systems
D) you have to logon to the AP to find the RSSI value at your current location
Q3) Which of the following are times when you should conduct a site survey? (Choose all that apply.)
A) prior to installing a WLAN
B) when there are major changes in personnel
C) after an electrical storm
D) when there are changes to the building
Q4) Why is it important to document existing wired and wireless networks?
A) to examine possible sources of interference
B) to ensure that the new or expanded wireless LAN will "dovetail" into what is already in place
C) to avoid providing overlapping network coverage
D) to better understand the basic networking needs of the organization
Q5) Name and describe three times at which a site survey should be conducted.
Page 10
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Chapter 9: Wireless LAN Security Vulnerabilities
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Sample Questions
Q1) What disadvantage of wireless networks provides the biggest stumbling block to the adoption of wireless technology?
A) availability
B) cost
C) security
D) complexity
Q2) The three protections that must be extended over information can be described by the acronym ________.
Q3) The process whereby an attacker can trick a corporate mobile device to connect to an impostor AP is referred to as which of the following?
A) inserting network traffic
B) denial of service
C) hijacking the wireless connection
D) reading data
Q4) WEP guards one of the CIA characteristics,namely what?
A) integrity
B) availability
C) confidentiality
D) access control
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Chapter 10: Implementing Wireless LAN Security
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Sample Questions
Q1) WEP2 attempted to overcome the limitations of WEP by adding two new security enhancements.
A)True
B)False
Q2) What were three weaknesses in WEP identified by university studies?
Q3) Due to the enhancements in WEP2,it was widely implemented and remains a popular security mechanism today.
A)True
B)False
Q4) Which of the following are true about wireless security systems? (Choose all that apply.)
A)a method used by WIDS is anomaly-based monitoring B)WIPS can prevent an attack while WIDS cannot C)WIPS is dependent on signatures
D)passive WIDS can configure the firewall if an attack is detected
Q5) Kerberos became the heart of the WPA security method.
A)True
B)False
Q6) Describe pre-shared key authentication.
Q7) Describe a dictionary attack.
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Chapter 11: Managing a Wireless LAN
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Sample Questions
Q1) List the five assessments involved in creating a vulnerability assessment.
Q2) ____________________ is software that is embedded into hardware to control the device.
Q3) A threat agent is software installed on a computer that monitors for potential threats to the computer.
A)True
B)False
Q4) What is a difference between RMON and SNMP?
A) RMON uses MIBs
B) SNMP gathers network statistics
C) RMON uses dedicated devices
D) RMON is found on enterprise-level APs
Q5) Which of the following are NOT among the several defenses against attacks?
A) using security policies
B) security training
C) random employee security scans
D) physical security
Q6) The point of RF site tuning is to locate where APs should be mounted.
A)True
B)False
Page 13
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Chapter 12: Wireless Network Troubleshooting and Optimization
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Sample Questions
Q1) Which of the following is NOT a solution to the hidden node problem?
A) move the hidden node device
B) increase the client device's power
C) add another AP to the WLAN
D) increase the AP's power
Q2) Describe intersymbol interference.
Q3) EMI is strictly a man-made electronic disturbance.
A)True
B)False
Q4) What is cochannel interference?
Q5) Which type of device can you use to detect RF interference?
A) protocol analyzer
B) packet sniffer
C) spectrum analyzer
D) UTP analyzer
Q6) What are three ways to resolve a hidden node problem?
Q7) One of the main sources of WLAN problems is ____________ interference.
Page 14
Q8) Describe the issue of duplicate SSIDs and why this may cause a wireless device to intermittently disconnect from the AP.
Q9) Competing technologies that use FHSS can create ______________ interference.
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Chapter 13: Other Wireless Networks
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Sample Questions
Q1) What type of RFID tag operates at 2.45 GHz?
A) Ultrahigh frequency
B) Microwave
C) High frequency
D) Low frequency
Q2) If multiple piconets cover the same area,a Bluetooth device can be a member in two or more overlaying piconets.
A)True
B)False
Q3) In a piconet,one device is the ____,and controls all of the wireless traffic.
A) active slave
B) slave
C) master
D) controller
Q4) Free space optics (FSO)transmissions are sent by low-powered ____ beams through the open air.
A) infrared
B) fiber optic
C) RF
D) VLC
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