Course Introduction
Network Security Basics
Exam Answer Key
Network Security Basics introduces students to the fundamental concepts and principles of securing computer networks. This course covers topics such as threat analysis, common vulnerabilities, authentication methods, cryptography, firewalls, intrusion detection systems, and security protocols. Students will gain practical skills in identifying security risks, implementing defensive measures, and understanding industry best practices to protect network data and resources from unauthorized access and cyberthreats.
Recommended Textbook
Network+ Guide to Networks 5th Edition by Tamara Dean
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15 Chapters
748 Verified Questions
748 Flashcards
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2
Chapter 1: An Introduction to Networking
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Sample Questions
Q1) Describe the network specialties currently in high demand.
Answer: The following specialties are currently in high demand:
·Network security
·Convergence (the delivery of voice,video,and data over a single network)
·In-depth knowledge about one or more NOSs: UNIX,Linux,Mac OS X Server,Microsoft
Windows Server 2003,or Windows Server 2008
·Network management
·Internet and intranet design
·Configuration and optimization of routers and switches
·Centralized data storage and management for large-scale environments
Q2) Often,separate LANs are interconnected and rely on several ____ running many different applications and managing resources other than data.
A) workstations
B) servers
C) clients
D) stand-alone computers
Answer: B
Q3) A standard method or format for communication between networked devices.
Answer: D
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Page 3
Chapter 2: Network Standards and the OSI Model
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Sample Questions
Q1) In which OSI model layer(s)do NICs operate?
A) Physical
B) Network and Physical
C) Data Link
D) Physical and Data Link
Answer: D
Q2) Which IEEE standard describes specifications for wireless transmissions?
A) 802.1
B) 802.3
C) 802.5
D) 802.11
Answer: D
Q3) In which OSI model layer does TCP operate?
A) Physical
B) Transport
C) Network
D) Data Link
Answer: B
Q4) Serves as a translator.
Answer: E
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Chapter 3: Transmission Basics and Networking Media
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Sample Questions
Q1) Which connector is used in RS-232 transmissions?
A) DB-25
B) ST
C) BNC
D) Cat-5
Answer: A
Q2) ______________________________ cabling consists of one or more insulated wire pairs encased in a plastic sheath.
Answer: UTP (unshielded twisted pair)
Unshielded twisted pair
UTP
Q3) Part of a network that contains end nodes.
Answer: F
Q4) The distance between corresponding points on a wave's cycle is called its ____.
A) amplitude
B) frequency
C) phase
D) wavelength
Answer: D
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Chapter 4: Introduction to TCP/IP Protocols
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Sample Questions
Q1) If a device does not know its own IP address,it can still use ARP.
A)True
B)False
Q2) ____________________ is a process of subdividing a single class of networks into multiple,smaller logical networks,or segments.
Q3) The local host name plus its domain name.
Q4) The subprotocol that enables TCP/IP to internetwork - that is,to traverse more than one LAN segment and more than one type of network through a router is ____.
A) TCP
B) ICMP
C) UDP
D) IP
Q5) TCP is a(n)____ subprotocol.
A) open-ended
B) indiscriminating
C) connection-oriented
D) connectionless
Q6) The most common way of expressing IP addresses.
Q7) Describe how ARP improves efficiency of MAC-to-IP address mappings.
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Chapter 5: Topologies and Ethernet Standards
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Sample Questions
Q1) The most common 1-Gigabit Ethernet standard in use today is ____.
A) 1000Base-T
B) 1000Base-SX
C) 10GBase-SR
D) 1000Base-LX
Q2) The Ethernet_II frame type contains a 2-byte ____ field which differentiates it from the older Ethernet_802.3 and Ethernet_802.2 frame types.
A) data
B) length
C) source
D) type
Q3) In a ring network,each workstation acts as a(n)____ for the transmission.
A) repeater
B) amplifier
C) terminator
D) manager
Q4) The most common 1-Gigabit Ethernet.
Q5) Refers to the PoE device that supplies the power.
Q6) IEEE standard for fiber-optic Ethernet networks transmitting data at 1 Gbps.
Q7) Explain the 5-4-3 rule of networking.
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Chapter 6: Network Hardware
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Sample Questions
Q1) PCIe slots vary depending on the number of ____ they support.
A) lanes
B) labels
C) cards
D) processors
Q2) Plugs into a port and crosses over the transmit line to the receive line so that outgoing signals can be redirected into the computer for testing.
Q3) A(n)____ is the circuit board wire over which a device issues voltage to signal this request.
A) interrupt
B) IRQ
C) IRQ number
D) RX
Q4) Each time a computer starts up,the device drivers for all its connected peripherals are loaded into ____.
A) ROM
B) EEPROM
C) RAM
D) CMOS
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Chapter 7: WANs and Remote Connectivity
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Sample Questions
Q1) The PPTP VPN tunneling protocol is based on technology developed by Cisco.
A)True
B)False
Q2) Contain sites that are connected in star or ring formations are interconnected at different levels,with the interconnection points being organized into layers to form hierarchical groupings.
Q3) ____ is the standard for connecting home computers to an ISP via DSL or broadband cable.
A) SLIP
B) SLIPoE
C) PPP
D) PPPoE
Q4) What sets ATM apart from Ethernet is its ____ size.
A) channel
B) frame
C) variable packet
D) fixed packet
Q5) Refers to the T-carrier's Physical layer electrical signaling characteristics as defined by ANSI standards in the early 1980s.
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Chapter 8: Wireless Networking
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Sample Questions
Q1) ____ is an 802.11n network feature allowing the combination of multiple frames into one larger frame.
A) Channel bonding
B) Channel aggregation
C) Frame aggregation
D) Frame bonding
Q2) An 802.11g antenna has a geographic range of ____ meters.
A) 20
B) 100
C) 300
D) 330
Q3) The ______________________________ is a unique character string used to identify an access point.
Q4) A unique characteristic of the 802.11 data frame is its ____ field.
A) Frame Control
B) Sequence Control
C) Data
D) Duration
Q5) The use of multiple frequencies to transmit a signal is known as ____________________ technology.
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Chapter 9: Network Operating Systems
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Sample Questions
Q1) Explain why multitasking does not mean performing more than one operation simultaneously.Be sure to define preemptive multitasking.
Q2) The printer queue is a ____ representation of the printer's input and output.
A) virtual
B) logical
C) physical
D) hierarchical
Q3) A(n)____ is a pictorial representation of computer functions that,in the case of NOSs,enables administrators to manage files,users,groups,security,printers,and so on.
A) snapshot
B) shortcut
C) icon
D) GUI
Q4) A Windows XP client communicates with a Windows Server 2008 server using this file system.
Q5) A protocol used to access information stored in a directory.
Q6) In every NOS,groups form the basis for resource and account management.
A)True
B)False
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Chapter 10: In-Depth TCP/IP Networking
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Sample Questions
Q1) Explain how hiding IP addresses on private networks allows network managers more flexibility in assigning addresses.
Q2) On a network using TCP/IP,some nodes may use multiple IP addresses.
A)True
B)False
Q3) In classful addressing,Class C IPv4 address host information is located in the ____.
A) last 8 bits
B) last 16 bits
C) first 8 bits
D) first 16 bits
Q4) The TCP/IP administration utility for use with Windows NT,2000,XP,Vista,Server 2003,and Server 2008 operating systems.
Q5) The result from ANDing 11001111 with 10010001 is ____.
A) 11001111
B) 10010001
C) 10000001
D) 00000001
Q6) Explain what happens when an administrator issues the mtr command.
Q7) The TCP/IP configuration and management utility used on UNIX and Linux systems.
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Chapter 11: Voice and Video Over IP
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Q1) A computer that provides support for multiple H.323 terminals and manages communication between them.
Q2) SIP and H.323 regulate ____ for VoIP or video-over-IP clients and servers.
A) call signaling only
B) control only
C) call signaling and control
D) communication between media gateways
Q3) A device providing translation between network devices running H.323 signaling protocols and devices running other types of signaling protocols.
Q4) Explain how gateways on a converged network exchange and translate signaling and control information with each other so that voice and video packets are properly routed through the network.
Q5) Many VoIP vendors prefer ____________________ over H.323.
Q6) The H.323 protocol that handles call or videoconference signaling.
Q7) It is more difficult to transmit VoIP and video over IP signals over a packet-switched network than it is to transmit data signals.
A)True
B)False
Page 13
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Chapter 12: Network Security
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Q1) ____ is a social engineering practice in which a person attempts to glean access or authentication information by posing as someone who needs that information.
A) Cracking
B) Hacking
C) War driving
D) Phishing
Q2) Describe who should conduct a security audit and advantages,if any.
Q3) ____ protocols are the rules that computers follow to accomplish authentication.
A) Access
B) Availability
C) Authority
D) Authentication
Q4) A firewall that can block designated types of traffic based on application data contained within packets.
Q5) A firewall that can view a data stream.
Q6) By default,the 802.11 standard offers substantial security.
A)True
B)False
Q7) Data is encrypted using two keys.
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Chapter 13: Troubleshooting Network Problems
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Sample Questions
Q1) List eight questions to ask to help identify network problem symptoms that are not immediately obvious.
Q2) Instrument that checks whether a cable is conducting current.
Q3) When used on a copper-based cable,a continuity tester applies a small amount of ____ to each conductor at one end of the cable.
A) resistance
B) impedance
C) voltage
D) current
Q4) List five questions that may help a network professional determine whether a problem's symptoms are truly reproducible and,if so,to what extent.
Q5) A ____ can be used to intercept a telephone conversation.
A) sniffer
B) protocol analyzer
C) network monitor
D) butt set
Q6) The device used to measure resistance.
Q7) An instrument used to measure impedance,resistance,and voltage on a wire.
Q8) Describe what a voltage event recorder is and explain how it works.
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Chapter 14: Ensuring Integrity and Availability
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Q1) Protection against harmful code involves more than just installing anti-malware software.
A)True
B)False
Q2) Refers to the soundness of a network's programs,data,services,devices,and connections.
Q3) A(n)____ is a deviation from a specified level of system performance for a given period of time.
A) fault
B) failure
C) error
D) hoax
Q4) ____ is an automatic distribution of traffic over multiple links or processors to optimize response.
A) Redundancy
B) Failover
C) RAID
D) Load balancing
Q5) Define mirroring and server mirroring.Describe the necessary requirement for server mirroring.
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Chapter 15: Network Management
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Sample Questions
Q1) List six characteristics software running on network devices may use to prioritize traffic.
Q2) A(n)____ is a graphical representation of a network's devices and connections.
A) Multi Router Traffic Grapher
B) network diagram
C) wiring schematic
D) event viewer
Q3) Changes to ____________________ applications affect all users at once.
Q4) Explain how to gather baseline data on a network.
Q5) ____is the local storage of frequently needed files that would otherwise be obtained from an external source.
A) Swapping
B) Paging
C) Caching
D) Segmentation
Q6) On Windows-based computers an event log can be easily viewed with the GUI ____________________ application.
Q7) Describe the preparation and implementation requirements when upgrading a networked printer.
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Q8) Stores results from devices monitoring conditions in Windows-based networks.