Which of the following is concerned with guaranteed availability of a cloud resource?
A. IPAM
B. SLA
C. MTBF
D. EOL
Show Answer
Correct Answer: B
Explanation: An SLA (Service Level Agreement) defines the agreed service levels between a cloud provider and customer, including guaranteed availability or uptime targets and remedies if those targets are not met. IPAM manages IP addresses, MTBF is a reliability metric rather than a contractual guarantee, and EOL refers to the end of a product's supported lifecycle.
Question 132
After a recent merger, a large number of alerts are coming in regarding extremely high utilization. Which of the following should be generated to help inform new alerting requirements?
A. SLA
B. Network diagram
C. Baseline
D. Heat map
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Correct Answer: C
Explanation: A new baseline should be generated after the merger because the environment's normal utilization and traffic patterns have changed. Baselines establish expected performance levels and are used to set appropriate alert thresholds, reducing excessive alerts caused by outdated thresholds. An SLA defines service expectations, a network diagram documents topology, and a heat map visualizes utilization but does not establish alerting thresholds.
Question 133
Users can usually use RDP to connect to a terminal server with hostname TS19 that points to 10.0.100.19. However, users recently have been unable to connect to TS19. The technician pings 10.0.100.19 and gets an unreachable error. Which of the following is the most likely cause?
A. The users are on the wrong subnet.
B. The DHCP server renewed the lease.
C. The IP address was not reserved.
D. The hostname was changed.
Show Answer
Correct Answer: C
Explanation: The most likely cause is that the terminal server's IP address changed because it was obtained via DHCP without a reservation. DNS still resolves TS19 to 10.0.100.19, but the server may no longer be using that address, causing connectivity to fail. A wrong subnet would affect clients generally rather than explain why the server's expected IP is no longer reachable, DHCP lease renewal alone is normal if the address is reserved or static, and changing the hostname would not make a direct ping to the IP fail.
Question 134
Which of the following is the step that a troubleshooter should take immediately after implementing a solution?
A. Review lessons learned during the process.
B. Establish a plan of action.
C. Verify full system functionality.
D. Document actions and outcomes.
Show Answer
Correct Answer: C
Explanation: In the standard troubleshooting methodology (such as CompTIA's), after implementing the solution, the next step is to verify full system functionality. This confirms the issue is resolved and ensures no new problems were introduced before documenting the actions and outcomes.
Question 135
Which of the following, in addition to a password, can be asked of a user for MFA?
A. PIN
B. Favorite color
C. Hard token
D. Mother’s maiden name
Show Answer
Correct Answer: C
Explanation: MFA requires factors from different categories. A password is 'something you know.' A PIN, favorite color, and mother's maiden name are also knowledge factors, so they do not add a second factor. A hard token is 'something you have,' making it a valid additional factor for MFA.
Question 136
A network engineer configures an application server so that it automatically adjusts resource allocation as demand changes. This server will host a new application and demand is not predictable. Which of the following concepts does this scenario demonstrate?
A. Scalability
B. Software as a service
C. Hybrid cloud
D. Elasticity
Show Answer
Correct Answer: D
Explanation: Elasticity is the ability of a system to automatically increase or decrease allocated resources in response to changing demand. Scalability refers more generally to the capability to handle increased load, but the emphasis on automatic adjustment for unpredictable demand specifically describes elasticity.
Question 137
During a VoIP call, a user notices inconsistent audio and logs an incident ticket. A network administrator notices inconsistent delays in arrival of the RTP packets. Which of the following troubleshooting tools should the network administrator use to determine the issue?
A. Toner and probe
B. Protocol analyzer
C. Cable tester
D. Spectrum reader
Show Answer
Correct Answer: B
Explanation: Inconsistent RTP packet arrival delays indicate jitter, a common VoIP quality issue. A protocol analyzer (such as Wireshark) can capture and inspect RTP traffic, measure jitter, latency variation, packet loss, and timing to identify the cause of inconsistent audio. A toner/probe identifies cables, a cable tester checks cable integrity, and a spectrum analyzer/reader is for RF interference, not RTP jitter.
Question 138
Which of the following is an example of a split-tunnel VPN?
A. Only public resources are accessed through the user’s internet connection.
B. Encrypted resources are accessed through separate tunnels.
C. All corporate and public resources are accessed through routing to on-site servers.
D. ACLs are used to balance network traffic through different connections.
Show Answer
Correct Answer: A
Explanation: A split-tunnel VPN sends only traffic destined for protected/corporate resources through the VPN while allowing other traffic, such as general internet access to public resources, to use the user's normal internet connection. Option A best matches this behavior. Option C describes a full-tunnel VPN, while B and D do not define split tunneling.
Question 139
A government entity wants to implement technology that can block websites based on country code. Which of the following will best enable this requirement?
A. URL filtering
B. Content filtering
C. DNS poisoning
D. MAC filtering
Show Answer
Correct Answer: A
Explanation: URL filtering is designed to allow or block access based on URLs, domains, or top-level domains, including country-code TLDs (such as .ru or .cn). Content filtering evaluates page content rather than domain names. DNS poisoning is an attack technique, not a standard policy enforcement mechanism. MAC filtering controls network access by device MAC address and is unrelated to website blocking.
Question 140
A company's VoIP phone connection is cutting in and out. A senior network engineer is recommending the implementation of a voice VLAN. Which of the following should be configured?
A. 802.1Q tagging
B. Jumbo frames
C. Native VLAN
D. Link aggregation
Show Answer
Correct Answer: A
Explanation: A voice VLAN is typically implemented by using IEEE 802.1Q VLAN tagging so that voice traffic is carried on a dedicated VLAN, allowing separation from data traffic and enabling QoS handling. Jumbo frames are unrelated to VoIP, the native VLAN refers to untagged traffic, and link aggregation increases bandwidth/redundancy rather than creating a voice VLAN.
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