Network Administration
Chapter Exam Questions
Course Introduction
Network Administration introduces students to the fundamental concepts and practical skills required to manage and maintain computer networks in modern organizations. The course covers topics such as network architecture, protocols, and topologies, as well as the configuration and administration of network devices, including routers, switches, and firewalls. Key areas of focus include user account management, network security, performance monitoring, troubleshooting, and documentation. Through a combination of lectures and hands-on lab exercises, students will develop the ability to deploy, secure, and optimize network environments, preparing them for certification exams and careers in IT network administration.
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Data Communications and Computer Networks A Business Users Approach 7th Edition by Curt
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Chapter 1: Introduction to Computer Networks and Data Communications
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Q1) The lowest layer of the TCP/IP protocol suite is the network access or physcial layer. A)True
B)False
Answer: True
Q2) Explain what is meant by personal area network-to-workstation connections.
Answer: The personal area network was created in the late 1990s and is one of the newer forms of computer networks. Using wireless transmissions with devices such as personal digital assistants (PDAs), laptop computers, and portable music players, an individual can transfer voice, data, and music from handheld devices to other devices such as microcomputer workstations. Likewise, a user can download data from a workstation to one of these portable devices. For example, a user may use a PDA to record notes during a meeting. Once the meeting is over, the user can transmit the notes over a wireless connection from the PDA to his or her workstation. The workstation then runs a word processor to clean up the notes, and the formatted notes are uploaded to a local area network for corporate dissemination.
Q3) The ____________________ layer of the OSI model is responsible for establishing sessions between users.
Answer: session
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Chapter 2: Fundamentals of Data and Signals
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Q1) The ____ is a government standard in the United States.
A)UTF-8
B)EBCDIC
C)American Standard Code for Information Interchange (ASCII)
D)Unicode
Answer: C
Q2) One of the major problems with Unicode is that it cannot represent symbols other than those found in the English language.
A)True
B)False Answer: False
Q3) ____________________ is a simpler form of modulation in which binary 1s and 0s are represented by uniquely different values of amplitude, frequency, or phase. Answer: Shift keying
Q4) Amplitude shift keying is susceptible to sudden noise impulses such as the static charges created by a lightning storm.
A)True
B)False Answer: True
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Chapter 3: Conducted and Wireless Media
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Q1) A(n) ____________________ is a device that generates a new signal by creating an exact replica of the original signal.
Answer: repeater
Q2) Businesses can use terrestrial microwave to implement telecommunications systems between corporate buildings.
A)True
B)False
Answer: True
Q3) A(n) ____________________ system is one of the latest techniques for delivering Internet services into homes and businesses.
Answer: broadband wireless
Q4) A current or signal in one wire can produce an unwanted current or signal, called ____, in a second wire.
A)current-talk
B)signal-talk
C)crosstalk
D)crossover
Answer: C
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Chapter 4: Making Connections
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Q1) ____ is a technique for interfacing a computer to high-speed devices such as hard disk drives, tape drives, CDs, and DVDs.
A)Serial
B)RS-232
C)SCSI
D)EIA-232F
Q2) ____________________ polling is the polling method in which the mainframe computer (primary) polls each terminal (secondary), one at a time, in round-robin fashion.
Q3) With ____ connections, polling is not necessary because there is only one terminal per line.
A)point-to-point
B)multipoint
C)terminal-to-point
D)primary-to-point
Q4) Mainframe computers use polling to send or collect data with workstations. How does polling work, and what other more recently created protocols use polling?
Q5) What was the early disadvantage of USB?
Q6) What are the standards that conform the EIA-232F interface standard?
Page 6
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Chapter 5: Making Connections Efficient: Multiplexing and Compression
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Q1) To keep one signal from interfering with another signal, a set of unused frequencies called a(n) ____________________ is usually inserted between the two signals, to provide a form of insulation.
Q2) In the 1960s, AT&T created a service known as ____, which multiplexed digital data and digitized voice onto a high-speed telephone line with a data rate of 1.544 megabits per second.
A)ISDN
B)T-1
C)SONET
D)SDH
Q3) Multiplexing is a technique typically performed at the network access layer of the TCP/IP protocol suite.
A)True
B)False
Q4) ____________________, transmits data only from active users and does not transmit empty time slots.
Q5) In WDM, the wavelength of each differently colored laser is called the
Q6) What is the difference between a multiplexor and a demultiplexor?
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Chapter 6: Errors, Error Detection, and Error Control
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Q1) ____ error control is a technique usually associated with the Stop-and-wait flow control protocol.
A)Stop-and-wait
B)Timeout
C)Sliding window
D)ACK
Q2) Telephone signal crosstalk was a more common problem before telephone companies used fiber-optic cables and other well-shielded wires.
A)True
B)False
Q3) Noise is a problem for both analog and digital signals.
A)True
B)False
Q4) ____________________ is an unwanted coupling between two different signal paths.
Q5) If the impulse spike interferes with an analog signal, removing it without affecting the original signal is extremely easy.
A)True
B)False
Q6) How does frame relay control errors?
Page 8
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Chapter 7: Local Area Networks: Part I
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Q1) The ____ sublayer contains a header, computer (physical) addresses, error-detection codes, and control information.
A)logical link control (LLC)
B)logical flow control (LFC)
C)medium access control (MAC)
D)physical link control (PLC)
Q2) A(n) ____________________ protocol is basically a first-come, first-served protocol.
Q3) A ____ is a device that interconnects two segments of local area networks and acts as a filter.
A)hub
B)switch
C)router
D)satellite
Q4) A(n) _________________________ is a communications network that interconnects a variety of data communications devices within a small geographic area and broadcasts data at high data transfer rates.
Q5) ____________________ (nicknamed Cheapernet) was designed to allow for a less-expensive network by using less-expensive components.
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Chapter 8: Local Area Networks: Part II
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Sample Questions
Q1) ____ software incorporates a fairly large number of network support tools.
A)Network-monitoring
B)Crash protection
C)Antispam
D)Backup
Q2) Microsoft's ____________________ stores information about all the objects and resources in a network and makes this information available to users, network administrators, and application programs.
Q3) The ____ is essentially the interface device between the wireless user device and the wired local area network.
A)wireless server
B)wireless workstation
C)NIC
D)access point
Q4) Unix is often found with a text-based interface, although graphical user interfaces are available.
A)True
B)False
Q5) What are some of the more common RAID techniques?
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Chapter 9: Introduction to Metropolitan Area Networks and
Wide Area Networks
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Q1) Some MAN topologies are based on a ring.
A)True
B)False
Q2) Each time a packet is copied, a counter associated with the packet increases by one. This counter is called the ____.
A)hop limit
B)time to live
C)TTL count
D)hop count
Q3) The sub-network of a wide area network is the logical infrastructure and thus consists of nodes and various types of interconnecting media.
A)True
B)False
Q4) A company that has a connection with Metro Ethernet can create a(n) ____________________ for that connection.
Q5) A virtual circuit breaks a large amount of data into n packets.
A)True
B)False
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Q6) The speed at which a failover is performed is the ____________________.
Chapter 10: The Internet
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Q1) During the late 1960s, a branch of the U.S. government titled the ____ created one of the country's first wide area packet-switched networks.
A)Department of Defense
B)IEEE
C)Advanced Research Projects Agency (ARPA)
D)IETF
Q2) _________________________ allows a user to see if people are currently logged in on the network and, if they are, to send them short messages in real time.
Q3) IP multicasting suffers from a lack of security.
A)True
B)False
Q4) The ____________________ provides a connectionless data transfer service over heterogeneous networks by passing and routing IP datagrams.
Q5) Every device that has a connection to the Internet is assigned an IP address. A)True B)False
Q6) During the late 1960s, ARPA created one of the country's first wide area packet-switched networks, the ____________________.
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Chapter 11: Voice and Data Delivery Networks
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Q1) When no splitter is used to separate the DSL signal from the POTS signal, then the service is called ____.
A)asymmetric DSL
B)splitterless DSL
C)symmetric DSL
D)POTSless DSL
Q2) Quarter-T-1 and half-T-1 lines are called fractional T-1 services.
A)True
B)False
Q3) ____ means that different icons on a computer screen represent common PBX functions such as call hold, call transfer, and call conferencing, making the system easier for operators to use.
A)Third-party call control
B)PBX graphic user interface
C)Fax-back
D)Call filtering
Q4) A company that wishes to have its own in-house telephone system will often buy or lease a PBX.
A)True
B)False
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Chapter 12: Network Security
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Q1) How does public key cryptography work?
Q2) Top-level executives often have access to a narrow range of information within a company.
A)True
B)False
Q3) When hackers will even go so far as to create an application that appears to be legitimate and prompts users for an ID and password, the type of attack is termed ____________________.
Q4) All certificates are issued by a certificate authority.
A)True
B)False
Q5) _________________________ bombard a computer site with so many messages that the site is incapable of performing its normal duties.
Q6) ____ technology essentially takes the data to be transmitted and rather than transmitting it in a fixed bandwidth spreads it over a wider bandwidth.
A)Spread spectrum
B)3DES
C)AES
D)PKI
Page 14
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Chapter 13: Network Design and Management
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Q1) If only an overview of a local network is desired, then the analyst can create a(n) ____________________ connectivity map.
Q2) In general, a ____ approach is a series of steps and tasks that professionals, such as systems developers, can follow to build high-quality systems faster, with fewer risks, and at lower costs.
A)structured
B)random
C)linear
D)quadratic
Q3) Not all analysis and design projects require all three network connectivity maps. A)True
B)False
Q4) In a wide area connectivity map, external sites, such as suppliers or external agents, are denoted by circles containing the letter ____.
A)E
B)F
C)M
D)X
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