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WGU D412 NETWORK ANALYTICS
TROUBLESHOOTING VERIFIED PRACTICE
PAPER 2026 QUESTIONS WITH ANSWERS
GRADED A+
⩥ Which OSI layer is responsible for organizing how bits are passed over the physical layer between devices within the same collision domain? a. Frame b. Connection c. Transport d. Data Link. Answer: Data Link ⩥ Which OSI layer would define the scope of a protocol that makes sure packets of data are received correctly and resends them if they are not? a. Validation b. Transmission c. Transport d. Connection. Answer: Transport
⩥ Which protocol suite performs functions of OSI layer 4? a. IPX b. MAC c. CSMA/CD d. TCP. Answer: TCP ⩥ Which type of Ethernet cable can maintain 10Gbps transmission speeds through the course of its maximum 100-meter length? a. CAT 5e b. CAT 5 c. CAT 3 d. CAT 6a. Answer: CAT 6a ⩥ Which Internet access technology uses ordinary telephone wires for data transmission? a. DSL b. Cable c. Wi-Fi d. Hotspot. Answer: DSL
c. Signal Generator d. Bit Stretcher. Answer: Modem ⩥ Which device could be used to send commands to the mainframe for remote execution in early mainframe installations? a. Distributed Screens b. Dumb Terminals c. Execution Displays d. Command Receivers. Answer: Dumb Terminals ⩥ Which device is responsible for implementing network address translation (NAT)? a. Modem b. Router c. NIC d. Switch. Answer: Router ⩥ Which command produces the following output? Non-authoritative answer: Name: www.google.com
Address: 172.217.11. a. dig b. nslookup d. whois d. nmap. Answer: nslookup ⩥ Which command should be used to manually enter the default gateway for a computer? a. route b. ipconfig c. arp d. netstat. Answer: route ⩥ Which network diagnostic tool displays the path packets take between two endpoints? a. ifconfig b. traceroute c. ftp d. nslookup. Answer: traceroute
d. Wireless. Answer: CAT5e ⩥ Which network topology is shown in the following diagram? a. Full mesh b. Star c. Bus d. Ring. Answer: Full Mesh ⩥ Which network topology is being implemented when each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node? a. Star b. Full Mesh c. Ring d. Bus. Answer: Ring ⩥ In which physical LAN topology are nodes connected to each other with a backbone cable that loops around and ends at the same point it started? a. Ring
b. Bus c. Star d. Tree. Answer: Ring ⩥ Which OSI layer ensures error-free packets? a. Application b. Transport c. Session d. Presentation. Answer: Transport ⩥ Which topology uses a switch or hub to connect to all devices in the same network? a. Mesh b. Ring c. Star d. Bus. Answer: Star ⩥ Which cloud service provides hardware, operating systems, and web servers but not end-user applications?
a. Denial-of-service b. ARP poisoning c. Smurf attack d. Spoofing. Answer: Spoofing ⩥ An attacker attempts to misdirect traffic on a network back to the attacker by corrupting the network computer's cache of IP address to MAC address mappings that are cached. Which exploit is the attacker perpetrating? a. Port scanning b. Wiretapping c. Denial-of-service d. ARP poisoning. Answer: ARP poisoning ⩥ Which exploit actually breaches the physical medium or uses devices to monitor signals from outside the physical medium itself? a. Spoofing b. Wiretapping c. Sniffing d. Port scanning. Answer: Wiretapping
⩥ Which type of attack can overwhelm a web server by inserting more data into a web form than the system was configured to hold? a. Buffer overflow b. ARP poisoning c. Session hijacking d. Cross-site scripting. Answer: Buffer overflow ⩥ Which type of attack sends an email claiming to be from a reputable business in order to entice the recipient to provide sensitive information? a. Denial-of-service b. Phishing c. Password attacks d. Man-in-the-middle. Answer: Phishing ⩥ A user on a network is planning to launch an exploit against a coworker in a neighboring department. The user needs to identify the IP address of a coworker in the desired department. Which tool or utility will allow the user to watch network traffic in real time to identify a target? a. Port scan
a. BYOD b. Weak password c. Default password d. Misconfigured firewall rules. Answer: Default password ⩥ An employee that does not want to miss emails from important clients sets up her cellular smartphone to allow her to check email. Unfortunately, she does not install antivirus software on the cellular phone. What type of vulnerability is represented? a. Industry threat b. Misconfigured firewall rules c. Weak passwords d. BYOD/Mobile. Answer: BYOD/Mobile ⩥ What is the definition of vulnerability, in computer security? a. It is a weakness which can be exploited by a threat, such as an attacker, to perform unauthorized actions within a computer system. b. It is a possible danger that might exploit a weakness to breach security and therefore cause possible harm.
c. It is an action taken by a threat that exploits a weakness that attempts to either block authorized access to an asset or to gain unauthorized access to an asset. d. It is the potential of a threat to exploit a weakness via an attack.. Answer: It is a weakness which can be exploited by a threat, such as an attacker, to perform unauthorized actions within a computer system. ⩥ What is required to establish a secure connection to a remote network over an insecure link? a. Virtual Private Network (VPN) service b. Linux c. Command Line Interface d. TOR Network. Answer: Virtual Private Network (VPN) service ⩥ An organization is concerned about brute force attacks. How should the organization counter this risk? a. Install a mantrap and biometric scanner at the entrance of its data center. b. Implement a system hardening policy that ensures operating system updates and software patches are installed regularly. c. Institute a log-in policy that locks users out of an account after three failed password attempts.
⩥ An unauthorized third-party has gained access to a company network. How can they be prevented from deleting data? a. Access controls b. Physical controls c. Biometrics d. Man trap. Answer: a. Access controls ⩥ An attacker has gained access to the passwords of several employees of a company through a brute force attack. Which authentication method would keep the attacker from accessing the employees' devices? a. MFA (multi-factor authentication) b. AAA (authentication, authorization, and accounting) c. PKI (public key infrastructure) d. TCP/IP (transmission control protocol/internet protocol. Answer: a. MFA (multi-factor authentication) ⩥ After downloading a CD/DVD burning program, a user notices that someone is remotely accessing the computer during nighttime hours. Which type of malware is likely found in the CD/DVD software? a. Virus
b. Adware c. Worm d. Trojan horse. Answer: d. Trojan horse ⩥ A user is working on a home computer when another user seems to open an application to view documents on the same computer. The user immediately suspects that a back door into the computer exists.Which action should be taken first to deal with the problem? a. Close the application the remote user opened b. Begin running antivirus scans c. Unplug the PC's network connection d. Open task manager to determine which applications are running. Answer: c. Unplug the PC's network connection ⩥ A user receives an email from an unknown bank saying that the user's account with the bank has been compromised. The user suspects that this is a phishing exploit. How should the user safely proceed? a. Click the link provided in the email to receive more information. b. Open a new browser page, navigate to the bank's website, and acquire legitimate contact information to report the email. c. Use antivirus software to scan the email.
Which category of the CIA triad is affected? a. Confidentiality b. Availability c. Integrity d. Application. Answer: b. Availability ⩥ While investigating a security incident, a technician discovers an unauthorized packet-capturing tool on the network. Which category of the CIA triad is being attacked? a. Authenticity b. Confidentiality c. Availability d. Integrity. Answer: b. Confidentiality ⩥ Which type of firewall initiates a new connection on behalf of the client and presents its own IP to the server when a client initiates a connection to a server? a. Application level b. Packet filtering c. Circuit level
d. Stateful inspection. Answer: c. Circuit level ⩥ Which feature of a firewall allows an organization to use private non- routable networks while enabling communication to the internet? a. Port Address Translation (PAT) b. Border Gateway Protocol (BGP) c. Static routing d. Packet filtering. Answer: a. Port Address Translation (PAT) ⩥ What is the meaning of "state" when referring to stateful inspection in firewalls? a. It refers to the connection state of a conversation between two computers. b. It refers to the connection state of a computer to the network. c. It refers to the two firewall rules needed, one for the sender and one for the recipient. d. It refers to the inspection of the traffic payload and forwarding on to its destination.. Answer: a. It refers to the connection state of a conversation between two computers. ⩥ What can a user install to detect malicious software?
