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Servers that have a NOS installed require less memory, processing power, and storage capacity than clients because servers are called on to handle only light processing loads and requests from multiple clients.

A) True
B) False

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How can you prevent damage to a component prior to touching it?

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Before touching a component, first groun...

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What layer of the OSI model describes how data between applications is synced and recovered if messages don't arrive intact at the receiving application?


A) Application Layer
B) Presentation Layer
C) Session Layer
D) Transport Layer

E) All of the above
F) None of the above

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Explain the two different categories of Application layer protocols, and then detail the PDU used at this layer.

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Application layer protocols are used by ...

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The term firmware refers to programs embedded into hardware devices. This software only changes when a firmware upgrade is performed.

A) True
B) False

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The Data Link Layer utilizes what name for its protocol data unit (PDU) ?


A) packet
B) data
C) bit
D) frame

E) None of the above
F) B) and D)

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What are some general OSHA guidelines to use when using power (electric) tools or other hand tools in the workplace?

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Some general OSHA guidelines for using power tools or other hand tools in the workplace are as follows: *Wear personal protective equipment (PPE) to protect yourself as you work. For example, wear eye protection where dust or fumes are generated by power tools. *Keep all tools in good condition and properly store tools not in use. Examine a tool for damage before you use it. *Use the right tool for the job and operate the tool according to the manufacturer's instructions and guidelines. Don't work with a tool unless you are trained and authorized to use it. *Watch out for trip hazards, so you and others don't stumble on a tool or cord. For example, keep power tool electrical extension cords out from underfoot, and don't leave hand tools lying around unattended.

A policy in which all exit doors for a building stay unlocked during a fire is an example of what type of policy?


A) fail-open
B) fail-close
C) fail-tolerant
D) fail-oriented

E) A) and B)
F) A) and C)

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A

An open electrical circuit as a result of a failed circuit breaker is considered to be what type of failure system?


A) fail-open
B) fail-close
C) fail-tolerant
D) fail-dynamic

E) All of the above
F) None of the above

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Which of the following is not one of the disadvantages of peer-to-peer networks?


A) They lack scalability.
B) They are not necessarily secure.
C) They are impractical for connecting large numbers of computers.
D) They centralize user account logins.

E) All of the above
F) A) and D)

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D

Explain the differences between a physical topology and a logical topology.

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The term physical topology, or network t...

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The fundamental difference between a switch and a router is that a switch belongs only to its local network and a router belongs to two or more local networks.

A) True
B) False

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In considering the responsibilities of each layer of the OSI model, what statement accurately reflects those of the Presentation layer?


A) The Presentation layer describes the interface between two applications, each on separate computers.
B) The Presentation layer is responsible for reformatting, compressing, and/or encrypting data in a way that the application on the receiving end can read.
C) The Presentation layer is responsible for describing how data between applications is synced and recovered if messages don't arrive intact at the receiving application.
D) The Presentation layer is responsible for transporting Application layer payloads from one application to another.

E) C) and D)
F) B) and D)

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When dealing with static electricity, what kind of failure caused by static discharge shortens the life of a component, and can cause intermittent errors?


A) catastrophic failure
B) interrupting failure
C) upset failure
D) temporary failure

E) A) and B)
F) None of the above

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The Transport layer header addresses a receiving application by a number called a MAC address.

A) True
B) False

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What statement accurately reflects what occurs when a message is too large to transport on a network?


A) The message is discarded and must be sent again.
B) The message is sent anyway, and is received by the destination as garbage data.
C) The message is divided into smaller messages called segments (for TCP) or datagrams (for UDP) .
D) An ICMP error is generated, and the application must reformat the data for transmission.

E) B) and C)
F) C) and D)

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What are the differences between the POP3 and IMAP4 protocols?

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Using the POP3 (Post Office Pr...

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What Application layer protocol can be used to monitor and gather information about network traffic and can alert network administrators about adverse conditions that need attention?


A) HTTP
B) POP3
C) SNMP
D) SMTP

E) B) and C)
F) None of the above

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The Data Link layer attaches a trailer to the end of a packet, and does not include a header.

A) True
B) False

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The frame header at the Data Link layer includes hardware addresses of the source and destination NICs. What is another name for this address?


A) MAC (Media Access Control) address
B) DAC (Data Access Control) address
C) DAC (Digital Access Control) address
D) PAC (Packet Access Control) address

E) All of the above
F) C) and D)

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