Network Security Basics
Question Bank
Course Introduction
Network Security Basics introduces students to the foundational concepts, technologies, and practices essential for safeguarding computer networks. The course covers core topics such as the principles of confidentiality, integrity, and availability, common network threats and vulnerabilities, and the strategies used to counteract them. Students will explore security mechanisms including firewalls, intrusion detection and prevention systems, cryptographic protocols, and secure network design. Emphasis is placed on both theoretical understanding and practical application, preparing students to identify risks, implement basic security measures, and recognize the importance of maintaining secure network environments in organizational settings.
Recommended Textbook
Network+ Guide to Networks 7th Edition by Jill West
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12 Chapters
599 Verified Questions
599 Flashcards
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Page 2
Chapter 1: Introduction to Networking
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Sample Questions
Q1) The segment or datagram protocol data unit exists at what layer of the OSI model?
A)Application layer
B)Transport layer
C)Network layer
D)Data link layer
Answer: B
Q2) When using a Windows domain,what is the domain-level account for each user known as?
A)global account
B)universal account
C)domain token
D)principle name
Answer: A
Q3) Servers that have a NOS installed require less memory,processing power,and storage capacity that clients because servers are called on to handle only light processing loads and requests from multiple clients.
A)True
B)False
Answer: False
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Page 3
Chapter 2: How Computers Find Each Other on Networks
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Sample Questions
Q1) A type of DNS data record that maps theIPv4 address of an Internet-connected device to its domainname.
A)A (Address)record
B)AAAA (Address) record
C)Automatic Private IP Addressing (APIPA)
D)device ID
E)Dynamic Network Address Translation (DNAT)
F)Internet Corporation for Assigned Names and Numbers (ICANN)
G)NetBIOS
H)packet analyzer
I)PTR (Pointer)record
J)Static Network Address Translation (SNAT)
Answer: A
Q2) What do the first 24 bits of a MAC address represent?
A)Organizationally Unique Identifier
B)device ID
C)extension ID
D)network ID
Answer: A
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Chapter 3: How Data Is Transported Over Networks
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Sample Questions
Q1) What field in an IPv4 packet informs routers the level of precedence they should apply when processing an incoming packet?
A)Differentiated Services (DiffServ)
B)Internet header length (IHL)
C)Time to Live (TTL)
D)Padding
Answer: A
Q2) The TCP ___________________ is performed before TCP transmits the actual data.
Answer: Three-way handshake
Q3) As a network support technician,you only need to know how to support IPv6.
A)True
B)False
Answer: False
Q4) What versions of the IP protocol are used on networks today?
A)IPv1
B)IPv4
C)IPv6
D)IPv5
Answer: B,C
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Chapter 4: Structured Cabling and Networking Elements
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Sample Questions
Q1) A device that converts DC electrical energy to ACelectrical energy.Better inverters will also condition the power,which helps protect sensitive electronic equipmentfrom power fluctuations.
A)airflow
B)alternating current (AC)
C)collision domain
D)direct current (DC)
E)FCS (frame check sequence)
F)inverter
G)NAS (Network attached storage)
H)power converter
I)rack unit (RU)
J)voltage regulator
Q2) During termination of twisted pair cabling,what should be done to ensure minimal cross talk is introduced?
A)No more than 1 inch of the cable should be exposed.
B)No less than 1 inch of the cable should be exposed.
C)Each pair should be stripped of insulation so that it doesn't get caught in the jack.
D)Each pair should be twisted around another pair to reduce cross talk.
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Chapter 5: Network Cabling
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Sample Questions
Q1) Frequencies used to convey speech over telephone lines fall between what two frequencies below?
A)100 Hz
B)300 Hz
C)3.3 KHz
D)5.5 KHz
Q2) A character encoding system consisting of 128characters.
A)1000Base-LX
B)1000Base-TX
C)ASCII
D)Cat (category)
E)DWDM (Dense Wavelength Division Multiplexing)
F)far end cross-talk (FEXT)
G)multiplexing
H)short circuit
I)throughput
J)wavelength
Q3) A _____________ is a simple instrument that can measure many characteristics of an electric circuit,including its resistance,voltage,and impedance.
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Page 7
Chapter 6: Wireless Networking
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Sample Questions
Q1) Which 802.11 technology is the first Wi-Fi standard to approach gigabit Ethernet capabilities,and operates on the 5 GHz band?
A)802.11a
B)802.11b
C)802.11n
D)802.11ac
Q2) Describe the 802.11a standard,and detail some of its history and advantages / disadvantages versus other 802.11 standards.
Q3) What two frequencies are used for most wireless networks?
A)900 MHz
B)2.4 GHz
C)4.9 GHz
D)5 GHz
Q4) The wireless spectrum,as defined by the FCC,spans between which two frequencies?
A)2 KHz
B)9 KHz
C)300 GHz
D)500 GHz
Q5) Elaborate on the three different types of wireless network topologies.
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Chapter 7: Cloud Computing and Remote Access
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Sample Questions
Q1) When using public and private keys to connect to an SSH server,where must your public key be placed before you can connect?
A)In an authorization file under your home directory on your computer.
B)In an authorization file on the host where the SSH server is.
C)In the /etc/ssh/keys folder.
D)In the /var/run/ssh/public folder.
Q2) In the context of IPsec,a type of encryption that provides authentication of the IPpacket's data payload through public key techniques.Inaddition,it also encrypts the entire IP packet for addedsecurity.
A)IaaS (Infrastructure as a Service)
B)PaaS (Platform as a Service)
C)SaaS (Software as a Service)
D)PPP (Point to Point Protocol)
E)IKE (Internet Key Exchange)
F)AH (Authentication Header)
G)ESP (Encapsulating Security Payload)
H)CHAP (Challenge Handshake Authentication Protocol)
I)TKIP (Temporal Key Integrity Protocol)
J)KDC (Key Distribution Center)KDC)
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Page 9
Chapter 8: Network Risk Management
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Sample Questions
Q1) A software security flaw that can allow unauthorizedusers to gain access to a system.Legacy systems areparticularly notorious for leaving these kinds of gaps in anetwork's overall security net.
A)acceptable use policy (AUP)
B)backdoor
C)HIDS (host-based intrusion detection system)
D)HIPS (host-based intrusion prevention system)
E)NIDS (network-based intrusion detection system)
F)proxy service
G)smurf attack
H)TEMPEST
I)virus
J)worm
Q2) What characteristic of viruses make it possible for a virus to potentially change its characteristics (such as file size,and internal instructions)to avoid detection?
A)encryption
B)stealth
C)polymorphism
D)time dependence
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Page 10
Chapter 9: Unified Communications and Network Performance Management
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Sample Questions
Q1) A U.S.federal regulation that requires telecommunicationscarriers and equipment manufacturers to provide forsurveillance capabilities.It was passed by Congressin 1994 after pressure from the FBI,which worried thatnetworks relying solely on digital communications wouldcircumvent traditional wiretapping strategies.
A)AF (Assured Forwarding)
B)CALEA (Communications Assistance for Law Enforcement Act)
C)network monitor
D)EF (Expedited Forwarding)
E)load balancing
F)NIC teaming
G)PSTN (Public Switched Telephone Network)
H)SS7 (Signaling System 7)
I)time-shifted video
J)Webcast
Q2) The Priority Code Point field in a frame consists of how many bits?
A)2 bits
B)3 bits
C)5 bits
D)8 bits
Q3) Describe the Communications Assistance for Law Enforcement Act (CALEA).
Page 11
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Chapter 10: Network Segmentation and Virtualization
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Sample Questions
Q1) The Shortest Path Bridging protocol is defined in what IEEE standard?
A)802.1d
B)802.1aq
C)802.1Q
D)802.1s
Q2) Which network type allows a vNIC to access a network directly using the host machine's NIC?
A)bridged mode
B)NAT mode
C)host only mode
D)direct mode
Q3) In order to allow communication between VLANs for exchange of data,what must be used?
A)a firewall
B)a switch
C)a router
D)a root bridge
Q4) What are some reasons to use VLANs?
Q5) To eliminate the possibility of traffic loops on switches and bridges,the ________________ is used.
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Chapter 11: Wide Area Networks
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Sample Questions
Q1) The ________________ distributes signals to multiple endpoints via fiber-optic cable,in the case of FTTP,or via copper or coax cable.
Q2) How many channels exist in a T1 connection?
A)1
B)24
C)48
D)96
Q3) The carrier's endpoint on a WAN is called the Data Communications Equipment (DCE).
A)True
B)False
Q4) In what type of topology is each site connected to two other sites,providing redundancy?
A)bus topology
B)ring topology
C)star topology
D)circle topology
Q5) Outline the differences between a LAN and a WAN connection.
Q6) List and describe the four different generations of cellular technology.
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Q7) The customer's endpoint device on the WAN is called the __________________.
Chapter 12: Industrial and Enterprise Networking
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Sample Questions
Q1) eDiscovery and computer forensics reveal what two different types of data?
A)transient data
B)active data
C)ambient data
D)encrypted data
Q2) A computer,includinghardware and software,that technicians use to monitor andmanage physical systems in an industrial system.
A)acquisitions server
B)biorecognition access
C)degausser
D)Faraday cage
E)human-machine interfaces (HMI)
F)master terminal unit (MTU)
G)prox card
H)smart card
I)SOW (statement of work)
J)telemetry
Q3) What are three different changes that you might be required to perform on existing software?
Q4) Explain what an RFP is.
Page 14
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