IT Infrastructure
Mock Exam
Course Introduction
IT Infrastructure provides an in-depth exploration of the foundational technologies and frameworks that support modern information systems. The course covers core components such as hardware, software, networks, data centers, and cloud computing, as well as virtualization technologies and IT service management. Students will learn how these elements interact to deliver reliable and scalable services, with a focus on best practices in configuration, maintenance, security, and disaster recovery. By the end of the course, participants will be able to design, implement, and manage robust IT infrastructures that align with organizational goals and industry standards.
Recommended Textbook Network+ Guide to Networks 7th Edition by Jill West
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Chapter 1: Introduction to Networking
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Q1) What are the two main Transport Layer protocols?
A)IPX
B)SPX
C)TCP
D)UDP
Answer: C,D
Q2) What physical network topology consists of all connected devices connecting to one central device,such as a switch?
A)bus topology
B)ring topology
C)hub topology
D)star topology
Answer: D
Q3) Explain the differences between a physical topology and a logical topology.
Answer: The term physical topology,or network topology,mostly applies to hardware anddescribes how computers,other devices,and cables fit together to form the physical network.The term logical topology has to do with software and describes how access to thenetwork is controlled,including how users and programs initially gain access to thenetwork and how specific resources,such as applications and databases,are shared onthe network.
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Chapter 2: How Computers Find Each Other on Networks
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Q1) How many clusters of root servers exist?
A)8
B)10
C)13
D)15
Answer: C
Q2) What command below can be used to display a complete summary of all network interfaces in a Windows computer?
A)ipconfig /a
B)ipconfig /all
C)ipconfig /list
D)ipconfig /show
Answer: B
Q3) An IPv6 address consists of how many bits?
A)32
B)48
C)96
D)128
Answer: D
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Page 4
Chapter 3: How Data Is Transported Over Networks
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Q1) A _______ joins two or more networks and passes packets from one network to another.
Answer: router
Q2) What address does ARP work in conjunction with IPv4 to discover?
A)IP
B)MAC
C)ARP
D)physical
Answer: B,D
Q3) 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
Q4) As a network support technician,you only need to know how to support IPv6.
A)True
B)False
Answer: False
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Chapter 4: Structured Cabling and Networking Elements
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Q1) What type of power converter changes the voltage of an AC current,such as when power over the main line from an electric company is changed before being delivered to a home?
A)inverter
B)rectifier
C)transformer
D)voltage regulator
Q2) Equipment racks most commonly come in what two widths?
A)17 inch frame
B)18 inch frame
C)19 inch frame
D)23 inch frame
Q3) Describe the differences between a brownout and a blackout.
Q4) A volt-ampere (VA)is the product of the voltage and the ________________ of the electricity on a line.
Q5) _______ are highly scalable and have a very high fault tolerance,massive storage capabilities,and fast data access.
Q6) To ensure that any _____________ are detected,frames are made large enough to fill the entire cable during transmission.
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Chapter 5: Network Cabling
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Q1) Using DWDM,a single fiber can carry between what two numbers of channels?
A)60
B)80
C)160
D)200
Q2) A form of transmission that allows multiplesignals to travel simultaneously over one medium.
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) What is modulation? Provide two examples of how it can be used.
Q4) A _____________ is a simple instrument that can measure many characteristics of an electric circuit,including its resistance,voltage,and impedance.
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Chapter 6: Wireless Networking
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Q1) Which of the following are two different types of attacks against Bluetooth connections that can be used to send unsolicited data,or download data without permission?
A)bluesniffing
B)bluejacking
C)bluespoofing
D)bluesnarfing
Q2) What two terms describe a wireless network topology in which access points work as peer devices on the same network?
A)mesh WLAN
B)infrastructure WLAN
C)wireless gateway
D)wireless mesh network (WMN)
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) Describe the hidden node problem,and explain how it can be mitigated.
Q5) Access points that include routing functions are also called _______________.
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Chapter 7: Cloud Computing and Remote Access
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Q1) The PPP headers and trailers used to create a PPP frame that encapsulates Network layer packets vary between 8 and 10 bytes in size due to what field?
A)priority
B)FCS
C)FEC
D)encryption
Q2) Anauthentication protocol that operates over PPP and alsoencrypts usernames and passwords for transmission
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)
Q3) Describe the three way handshake process as used by CHAP.
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Page 9
Chapter 8: Network Risk Management
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Q1) An attack in which hackers transmit bogus requests for connection to servers or applications in order to harvest useful information to guide their attack efforts is known as what option below?
A)banner-grabbing attack
B)reflective attack
C)friendly attack
D)IP spoofing attack
Q2) A threat to networked hosts in which the hostis flooded with broadcast ping messages.A smurf attack is atype of denial-of-service attack.
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
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Chapter 9: Unified Communications and Network Performance Management
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Q1) A computer that provides support for multiple H.323 terminals and manages communication between them is known as what term below?
A)H.323 gateway
B)H.323 gatekeeper
C)MCU
D)H.323 server
Q2) What two log files are used by older versions of Unix and newer version of Linux to store log information?
A)/var/log/messages
B)/var/log/syslog
C)/var/log/log
D)/var/adm/messages
Q3) What two terms below are used to describe a telephone switch that connects and manages calls within a private organization?
A)public branch exchange
B)private branch exchange
C)PBX
D)PBE
Q4) What are the minimum functions supported by all network monitoring tools?
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Chapter 10: Network Segmentation and Virtualization
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Q1) The management option that can provide on-site infrastructure access when the network is downor completeremote access in cases of connectivity failures on the network,such as via a cellularsignal,is known as?
A)in-band management
B)out-of-band management
C)open management
D)side channel management
Q2) In an IPv6 address,the first 64 bits of the address are known as what?
A)host prefix
B)equipment ID
C)routing prefix
D)prefix mask
Q3) How can VLAN hopping attacks be prevented on a network?
A)Install an additional switch to isolate traffic.
B)Disable auto trunking and move native VLANs to unused VLANs.
C)Install a router to process the untagged traffic on the VLAN.
D)Use MAC address filtering.
Q4) Only Class B and Class C networks can be subnetted.
A)True
B)False
Page 12
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Chapter 11: Wide Area Networks
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Q1) The guaranteedminimum amount of bandwidth selected when leasing aframe relay circuit.Frame relay costs are partially basedon this.
A)ATM (Asynchronous Transfer Mode)
B)BRI (Basic Rate Interface)
C)CIR (committed information rate)
D)DSLAM (DSL access multiplexer)
E)geostationary orbit
F)LTE (Long Term Evolution)
G)Metro Ethernet
H)ring topology WAN
I)smart jack
J)transponder
Q2) When using frame relay,what is the name of the identifier that routers use to determine which circuit to send frames to?
A)SVC identifier
B)data link connection identifier
C)PVC identifier
D)frame path identifier
Q3) What are some of the features of the WiMAX standard?
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Chapter 12: Industrial and Enterprise Networking
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Q1) 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
Q2) The first step of a response policy should be to secure the area.
A)True
B)False
Q3) Explain what a memorandum of understanding (MOU)is.
Q4) The goal of a disaster recovery plan is to ensure ______________.
Q5) Describe a service level agreement.
Q6) Explain what an RFP is.
Q7) What should be in a disaster recovery plan that relates to computers?
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