WGU D315 Network and Security Foundation 2024/2025
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Course
WGU D315
Institution
WGU D315
WGU D315 Network and Security Foundation 2024/2025
Which OSI layer is related to the IP protocol - Network 3
Which OSI layer is organizing the bits over the physical layer between devices in the same collision domain? - Data Link 2 - They are in the same Frame
Which OSI layer is a ...
WGU D315 Network and Security Foundation 2024/2025
Which OSI layer is related to the IP protocol - Network 3
Which OSI layer is organizing the bits over the physical layer between devices in the
same collision domain? - Data Link 2 - They are in the same Frame
Which OSI layer is a Switch at? - Data Link 2
Which OSI layer is a WAP (Wireless Access Point) at? - Data Link 2
Which OSI layer is a router at - Network (3)
TCP protocol is on what OSI layer - Transport (4)
OSI layer 1 - Physical Layer (Cable, Hubs, Repeaters)
OSI layer 2 - Data Link Layer (Frame, Switch, PPP, Ethernet)
OSI layer 3 - Network Layer (Moves packets, IP)
OSI layer 4 - Transport Layer (TCP, end to end connection)
OSI Layer 5 - Session Layer (API, Sockets, Synch and send to port)
OSI layer 6 - Presentation layer (Syntax and encryption layer, SSL, SSH, JPEG)
OSI layer 7 - Application layer (end user layer, http, applications)
Network Typology point to point - Two devices connect directly
Network Typology bus - All devices connect to a central main line
Network Typology Ring - All devices have two connections and form an endless ring
Network Typology Star - All devices connect to a central point
Network Typology Tree - Multiple devices connect together (on a switch) and then the
switches are connected with each other
Network Typology Mesh - All devices connect directly to each other
, Network Typology Hybrid - Multiple Network Typology within the network
Cloud - where do I manage the OS Iaas or Paas? - Iaas
What do I manage on Paas (2) - Application and Data
Name the 3 CIA triades - Integrity, Availability and Confidentiality
What is the CIA Triade Integrity? - Detects alteration in storage, transit and process
What is the CIA Triade Availability? - Ensure Authorized Access, Performance and
Backup
Keeping unauthorized users out is not in this triade.
What is the CIA Triade Confidentiality? - Protect from unauthorized access and use,
protecting data access in storage, transit and process
100m long Cat 5 cable supports speeds up to - 100 Mb/s
100m long Cat 5e cable supports speeds up to - 1000 Mb/s or 1 Gb/s
100m long Cat 6 cable supports speeds up to - 10 Gb/s
100m long Cat 6a cable supports speeds up to - 10 Gb/s
Does a firewall provide two way protection? - Yes, it protects ingress and egress data
Firewall that only checks the address label - Packet Filter
On what OSI level is a Packet Filter operating - Transport (checks TCP/UDP prot
numbers) and Network (checks source and destination IP)
What is a circuit level gateway - A firewall that conceals the true identity of the
protected network (hides IP) on the transport (4) layer
What does state in stateful mean? - It refers to the connection state between two
computers
Why do we need the 5th layer on a Stateful Inspection - In this connection, the firewall
is creating temporary rules per session to permit communication (TCP) back to the
sender.
What is a stateful inspection - It reduces the amount of firewall rules. Firewall vendors
implemented a feature that only needs one rule to allow the initial communication.
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