WGU D402 CERTIFICATION SCRIPT 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◍ Packet Switched Network.
Answer: A message's pathway is only est. as it is sent; the choice of pathway
is based on availability and amount of message traffic
◍ Direct Conversion.
Answer: Old system is turned off and the new system is turned on at a
specific data and time
◍ Presentation Tier.
Answer: Tier where the user interface for the system is developed; shields
the user from the underlying logic of the systems as well as the underlying
data structures
◍ Support IT Professionals.
Answer: Help desk and training.
◍ Resource/Filename ID.
Answer: Indicates the name of the file you are accessing, or the location of
the document on the server
◍ Drilling up and down.
Answer: Shifts the view of the data; down provides more detail, up provides
summarized data
◍ Bus Network.
Answer: Devices connected along a single cable.Size of network is
restricted.
◍ 3rd Generation of Computers.
Answer: Silicon chips (known as ICs - integrated circuits), reduced cost,
called mini computers, networks introduced via dumb terminals
,◍ Flat File Database.
Answer: One large single table; used if the amount of data that is being
recorded is fairly minimal
◍ Evolution of Storage.
Answer: Punch cards, magnetic tape, hard disks, floppy disks, optical discs,
flash memory, cloud storage
◍ Sort.
Answer: Sorting records based on some field(s) such as ascending order by
last name
◍ Tuples.
Answer: Rows of a relation in a database
◍ Relational Database.
Answer: Has multiple tables (relations) with interrelated fields; most
common structure for databases
◍ LaaS.
Answer: Logging as a Service. All resources an IT dept. needs are located
outside of the organization and are accessible by anyone, anywhere.
◍ Analysis.
Answer: Determines the user requirements for the new system and develops
logical models of the system
◍ Hardware.
Answer: Physical components of a computer system which include the
system unit and its components and peripheral devices; tangible aspects of
the computer.
◍ Symmetric Key Encryption.
Answer: Uses the same key for performing the encryption and decryption
◍ Storage.
Answer: Processed information is stored for permanent record.
, ◍ Processing.
Answer: Raw data is organized or structured for usefulness.
◍ Firewalls.
Answer: Can be either software or hardware; hardware is a dedicated server;
software contains a list of the rules that describe the types of messages that
should either be permitted to make it through, or those that should be
blocked
◍ Utility Programs.
Answer: Programs that allow the user to monitor and improve system
performance.
◍ Output.
Answer: Information is output so user can see results.
◍ IP Aliasing.
Answer: Associating more than one IP address to a network interface.
◍ Information.
Answer: Processed data.
◍ Field.
Answer: Contains the data of an attribute for a record within a relation
◍ Incremental backup.
Answer: An initial full backup is completed and then subsequent backups
only capture the changes since the last backup
◍ Network Hub.
Answer: Connects computers to each other with no real understanding of
what is being transferred; used for private networks with local computers.
◍ Online Data Processing (OLDP).
Answer: Deals with data in real time
◍ Mail Server.
Answer: Two email servers communicate with each other
QUESTIONS WITH SOLUTIONS GRADED A+
◍ Packet Switched Network.
Answer: A message's pathway is only est. as it is sent; the choice of pathway
is based on availability and amount of message traffic
◍ Direct Conversion.
Answer: Old system is turned off and the new system is turned on at a
specific data and time
◍ Presentation Tier.
Answer: Tier where the user interface for the system is developed; shields
the user from the underlying logic of the systems as well as the underlying
data structures
◍ Support IT Professionals.
Answer: Help desk and training.
◍ Resource/Filename ID.
Answer: Indicates the name of the file you are accessing, or the location of
the document on the server
◍ Drilling up and down.
Answer: Shifts the view of the data; down provides more detail, up provides
summarized data
◍ Bus Network.
Answer: Devices connected along a single cable.Size of network is
restricted.
◍ 3rd Generation of Computers.
Answer: Silicon chips (known as ICs - integrated circuits), reduced cost,
called mini computers, networks introduced via dumb terminals
,◍ Flat File Database.
Answer: One large single table; used if the amount of data that is being
recorded is fairly minimal
◍ Evolution of Storage.
Answer: Punch cards, magnetic tape, hard disks, floppy disks, optical discs,
flash memory, cloud storage
◍ Sort.
Answer: Sorting records based on some field(s) such as ascending order by
last name
◍ Tuples.
Answer: Rows of a relation in a database
◍ Relational Database.
Answer: Has multiple tables (relations) with interrelated fields; most
common structure for databases
◍ LaaS.
Answer: Logging as a Service. All resources an IT dept. needs are located
outside of the organization and are accessible by anyone, anywhere.
◍ Analysis.
Answer: Determines the user requirements for the new system and develops
logical models of the system
◍ Hardware.
Answer: Physical components of a computer system which include the
system unit and its components and peripheral devices; tangible aspects of
the computer.
◍ Symmetric Key Encryption.
Answer: Uses the same key for performing the encryption and decryption
◍ Storage.
Answer: Processed information is stored for permanent record.
, ◍ Processing.
Answer: Raw data is organized or structured for usefulness.
◍ Firewalls.
Answer: Can be either software or hardware; hardware is a dedicated server;
software contains a list of the rules that describe the types of messages that
should either be permitted to make it through, or those that should be
blocked
◍ Utility Programs.
Answer: Programs that allow the user to monitor and improve system
performance.
◍ Output.
Answer: Information is output so user can see results.
◍ IP Aliasing.
Answer: Associating more than one IP address to a network interface.
◍ Information.
Answer: Processed data.
◍ Field.
Answer: Contains the data of an attribute for a record within a relation
◍ Incremental backup.
Answer: An initial full backup is completed and then subsequent backups
only capture the changes since the last backup
◍ Network Hub.
Answer: Connects computers to each other with no real understanding of
what is being transferred; used for private networks with local computers.
◍ Online Data Processing (OLDP).
Answer: Deals with data in real time
◍ Mail Server.
Answer: Two email servers communicate with each other
