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WGU D315 Network and Security Foundation Exam 232 Questions with Verified Answers,100% CORRECT
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WGU D315 Network and Security Foundation Exam 232 Questions with Verified Answers
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WGU D315 Network and Security Foundation Exam 232Questions with Verified Answers
Which OSI layer is related to the IP protocol - CORRECT ANSWER Network 3
Which OSI layer is organizing the bits over the physical layer between devices in
the same collision domain? - CORRECT ANSWER Data Link 2 - They are in the same
Frame
Which OSI layer is a Switch at? - CORRECT ANSWER Data Link 2
Which OSI layer is a WAP (Wireless Access Point) at? - CORRECT ANSWER Data
Link 2
Which OSI layer is a router at - CORRECT ANSWER Network (3)
TCP protocol is on what OSI layer - CORRECT ANSWER Transport (4)
OSI layer 1 - CORRECT ANSWER Physical Layer (Cable, Hubs, Repeaters)
OSI layer 2 - CORRECT ANSWER Data Link Layer (Frame, Switch, PPP, Ethernet)
OSI layer 3 - CORRECT ANSWER Network Layer (Moves packets, IP)
OSI layer 4 - CORRECT ANSWER Transport Layer (TCP, end to end connection)
OSI Layer 5 - CORRECT ANSWER Session Layer (API, Sockets, Synch and send to
port)
OSI layer 6 - CORRECT ANSWER Presentation layer (Syntax and encryption layer,
SSL, SSH, JPEG)
OSI layer 7 - CORRECT ANSWER Application layer (end user layer, http,
applications)
,Network Typology point to point - CORRECT ANSWER Two devices connect
directly
Network Typology bus - CORRECT ANSWER All devices connect to a central main
line
Network Typology Ring - CORRECT ANSWER All devices have two connections and
form an endless ring
Network Typology Star - CORRECT ANSWER All devices connect to a central point
Network Typology Tree - CORRECT ANSWER Multiple devices connect together
(on a switch) and then the switches are connected with each other
Network Typology Mesh - CORRECT ANSWER All devices connect directly to each
other
Network Typology Hybrid - CORRECT ANSWER Multiple Network Typology within
the network
Cloud - where do I manage the OS Iaas or Paas? - CORRECT ANSWER Iaas
What do I manage on Paas (2) - CORRECT ANSWER Application and Data
Name the 3 CIA triades - CORRECT ANSWER Integrity, Availability and
Confidentiality
What is the CIA Triade Integrity? - CORRECT ANSWER Detects alteration in
storage, transit and process
What is the CIA Triade Availability? - CORRECT ANSWER Ensure Authorized
Access, Performance and Backup
Keeping unauthorized users out is not in this triade.
What is the CIA Triade Confidentiality? - CORRECT ANSWER Protect from
unauthorized access and use, protecting data access in storage, transit and
process
,100m long Cat 5 cable supports speeds up to - CORRECT ANSWER 100 Mb/s
100m long Cat 5e cable supports speeds up to - CORRECT ANSWER 1000 Mb/s or
1 Gb/s
100m long Cat 6 cable supports speeds up to - CORRECT ANSWER 10 Gb/s
100m long Cat 6a cable supports speeds up to - CORRECT ANSWER 10 Gb/s
Does a firewall provide two way protection? - CORRECT ANSWER Yes, it protects
ingress and egress data
Firewall that only checks the address label - CORRECT ANSWER Packet Filter
On what OSI level is a Packet Filter operating - CORRECT ANSWER Transport
(checks TCP/UDP prot numbers) and Network (checks source and destination IP)
What is a circuit level gateway - CORRECT ANSWER A firewall that conceals the
true identity of the protected network (hides IP) on the transport (4) layer
What does state in stateful mean? - CORRECT ANSWER It refers to the connection
state between two computers
Why do we need the 5th layer on a Stateful Inspection - CORRECT ANSWER In this
connection, the firewall is creating temporary rules per session to permit
communication (TCP) back to the sender.
What is a stateful inspection - CORRECT ANSWER It reduces the amount of
firewall rules. Firewall vendors implemented a feature that only needs one rule to
allow the initial communication.
How do we protect the application level with a firewall - CORRECT ANSWER With
a proxy server, Middle man or Layer 7 firewall
Can a packet filter firewall scan the packet content? - CORRECT ANSWER No, a
layer 7 or proxy is needed
, What is a IDS - CORRECT ANSWER Intrusion Detection system. A system for
detecting attempting intrusion. Related to intrusion prevention systems (IPS) that
block suspected attacks
What is IPS - CORRECT ANSWER Intrusion Prevention System that can block traffic
if a malicious anomaly is detected
Cyber Attack - Ransomware - CORRECT ANSWER Encrypts data. Attacker sells the
key. Prevent with Virus scanner
Cyber Attack - Man in the Middle - CORRECT ANSWER Eaves dropping. The data
flows thru the middle man. The attacker can stop/change the data
Cyber Attack - Zero Day exploit - CORRECT ANSWER New unheard vulnerability.
Needs to be patched
Cyber Attack - DNS tunneling - CORRECT ANSWER An attacker creates a bad server
and connects it to the attacked domain name system. If now a request comes to
the attacked server, the attacker can tunnel into the client and since dns
connections are rarely monitored, the attacker stays hidden.
Cyber Attack - XXS attack - CORRECT ANSWER Cross Site Scripting uses a web form
to inject malicious code.
Cyber Attack - Social engineering - CORRECT ANSWER Convince someone to give a
you access to sensitive information
Cyber Attack - DoS and DDos - CORRECT ANSWER Denial of Service attacks flood a
server with too much traffic
Cyber Attack - SQL Injection - CORRECT ANSWER A technique to add a string of sql
code to a query to gain access to the targeted database
Cyber Attack - ARP Poisoning / ARP Spoofing - CORRECT ANSWER LAN attack that
sends malicious Address Resolution Protocol packets to a default gateway in
order to change the IP to MAC pairings
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