CCNA Bc Dr Ir Questions

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Option B is wrong because backup medium errors (e.g., bad sectors on tape or disk) would typically manifest as read/write failures or CRC errors during the backup or verification process, not as a checksum mismatch specifically indicating a source file change. Option C is wrong because the verification algorithm (e.g., MD5, SHA-1, or SHA-256) is a standard cryptographic hash function; if it were incorrect, the backup software would fail to compute any valid hash, not produce a mismatch between source and backup. Option D is wrong because a corrupt backup file would usually fail verification with a hash mismatch, but the exhibit explicitly indicates the source file changed during backup, which is a distinct scenario from post-backup corruption.

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Option A is wrong because it claims compliance with both RTO and RPO, but the actual RPO of 2 hours exceeds the required 1 hour, so RPO is not met. Option C is wrong because it states compliance with neither, but the actual RTO of 4 hours meets the required 4 hours, so RTO is compliant. Option D is wrong because it claims compliance with RPO but not RTO, which is the reverse of the actual situation: RTO is met and RPO is not.

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Option A is wrong because Mean Time to Repair (MTTR) measures the average time taken to repair a failed component, not the maximum allowable downtime for a business process. Option C is wrong because a Service Level Agreement (SLA) is a contractual commitment between a provider and customer, often including uptime percentages, but it does not define the specific recovery time target for a BCP. Option D is wrong because Recovery Point Objective (RPO) defines the maximum acceptable data loss measured in time (e.g., how far back in time data may be lost), not the time to restore service.

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Option A is wrong because adding a static host entry in the web servers' hosts file would require manual updates on every web server during each failover, which is not scalable and defeats the purpose of automation; it also does not address the DNS cache issue but rather bypasses it with a brittle workaround. Option B is wrong because increasing the DNS TTL to 86400 seconds would actually make the problem worse by causing DNS caches to hold stale records for longer, delaying the propagation of the updated IP address during failover. Option C is wrong because configuring the web servers to use a DNS resolver that does not cache would still require the resolver to query authoritative DNS servers, and the web servers themselves may still cache the result; moreover, it introduces unnecessary complexity and does not solve the fundamental issue of relying on DNS for a critical failover scenario.

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Option A is wrong because the identification phase involves detecting and confirming the incident (e.g., analyzing the alert and verifying the malicious script), which has already occurred when the SOC analyst receives the alert. Option C is wrong because the recovery phase focuses on restoring normal operations after the threat is removed, such as restoring data from backups or reimaging systems, not on containing or removing the active threat. Option D is wrong because the preparation phase occurs before any incident, involving creating policies, training staff, and deploying tools (e.g., endpoint detection and response agents), not responding to an active alert.

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Option A is wrong because data loss on the server is not the primary risk; domain controllers store Active Directory databases (NTDS.dit), but isolation does not inherently cause data loss—it prevents replication and authentication. Option B is wrong because chain of custody relates to preserving evidence for forensic analysis, not to the immediate operational impact of isolating a domain controller. Option C is wrong because propagation of malware to other systems is the very risk containment aims to prevent; isolating the server stops further spread, not causes it.

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Option A is wrong because failing over without data restoration would result in a stale or inconsistent database state, likely causing data loss and application errors. Option B is wrong because performing a point-in-time recovery using the last full backup and all transaction logs is time-consuming and would exceed the RTO; it is not the first action when a faster differential restore is available. Option D is wrong because restoring the last full backup before applying differential and log backups adds unnecessary steps and time, increasing the risk of RTO breach when the latest differential backup alone can be restored directly.

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Why these pairings

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Option B is wrong because 'single point of failure' typically refers to a component (like a power supply or network link) whose failure stops the entire system, not to the physical co-location of backups. Option C is wrong because 'lack of redundancy' implies missing duplicate components (e.g., a second server or disk array), whereas the issue here is the absence of geographic separation for existing backups. Option D is wrong because 'inadequate segregation of duties' is a security control related to separating administrative roles (e.g., backup operator vs. system admin), not a physical storage location problem.

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Option A is wrong because log shipping with 15-minute intervals introduces a recovery point objective (RPO) of up to 15 minutes, meaning any transactions committed in that window would be lost if the primary fails. Option B is wrong because full backups nightly only capture the database state at the time of the backup, leaving all transactions since the last backup vulnerable to loss. Option D is wrong because differential backups every 6 hours still rely on a full backup and only capture changes since that full backup, resulting in an RPO of up to 6 hours and potential data loss.

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Option A is wrong because determining the cost of implementing security controls is a function of risk management and cost-benefit analysis, not the BIA, which focuses on impact quantification rather than solution pricing. Option B is wrong because listing all IT assets is an inventory management or configuration management task (e.g., CMDB), whereas the BIA prioritizes business processes and their dependencies, not a simple asset list. Option D is wrong because assigning incident response roles is part of the incident response plan (IRP) development, not the BIA, which identifies recovery priorities before any roles are assigned.

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Option A is wrong because shutting down the attacked data center violates the active-active DR principle and would cause unnecessary downtime; the internal network is still functional, so the site can continue serving traffic once clean traffic is returned. Option C is wrong because rate limiting on the affected network segment would also drop legitimate traffic, degrading service availability rather than preserving it; it does not address the root cause of DDoS saturation. Option D is wrong because continuing to monitor while relying solely on the ISP is passive and insufficient; the ISP filtering may take time, and the retailer must take immediate action to maintain availability during the attack.

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Option A is wrong because a retention policy deletes backup sets after a specified period, but the question states the backup log shows success from two weeks ago, implying the backup set still exists; if the retention policy had deleted it, the restore would fail with a 'backup set not found' error, not a missing file error. Option B is wrong because an incorrect schedule would cause the backup to run at the wrong time or not run at all, but the log shows a successful backup, so the schedule executed correctly. Option D is wrong because an encryption key change would affect the ability to decrypt the backup data, not the presence of the file in the backup; the restore would fail with a decryption error, not a missing file error.

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Option A is wrong because differential backups reduce the amount of data to restore but still require a full restore from tape, which takes 3 hours; the bottleneck is the tape read speed, not the backup type. Option B is wrong because switching to disk-based backups improves restore speed but still involves restoring a full database from backup, which may not reduce the time below 2 hours if the database is large; the fundamental issue is the restore process itself, not the media. Option D is wrong because increasing the RTO to 3 hours violates the business requirement and is not a technical solution; RTO is a predefined objective, not a negotiable parameter in a disaster recovery exercise.

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Option A is wrong because continuing the test with manual procedures bypasses the automated failover that the generator was supposed to support, invalidating the test's ability to measure true recovery time objectives (RTOs) and recovery point objectives (RPOs). Option B is wrong because canceling the test discards the opportunity to validate all other DR components (e.g., storage replication, DNS failover, load balancer health checks) that are independent of the generator; a partial test with documented issues is more valuable than no test. Option D is wrong because shutting down the data center is an extreme, unnecessary action that would cause a full outage, violating the principle of minimizing disruption during a test; the generator failure alone does not indicate an immediate safety or data loss risk.

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Option A is wrong because the ACL only permits HTTPS from 10.0.1.0/24 to 192.168.2.100, not all HTTPS traffic. Option B is wrong because it incorrectly implies that only hosts from 10.0.1.0/24 can access HTTPS on 192.168.2.100, but the ACL does not restrict other traffic types or deny other sources from accessing HTTPS on that host—it simply permits this specific flow and denies all other HTTPS implicitly. Option D is wrong because the ACL is valid; the order of a single permit statement does not make it invalid, and there is no rule requiring a specific order for a single entry.

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Option B is wrong because the Business Impact Analysis (BIA) identifies critical business functions, recovery time objectives (RTOs), and recovery point objectives (RPOs), but it does not address the technical compatibility of backup media or the validation of restoration procedures. Option C is wrong because recovery strategies define the high-level approach to restoring operations (e.g., hot site, cold site, cloud failover), not the specific testing of backup tape formats or restoration tools. Option D is wrong because the communication plan covers notification and escalation procedures during an incident, not the technical verification of backup media compatibility or the maintenance of restoration capabilities.

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Option A is wrong because the exhibit does not indicate that the syslog-ng client is configured to use TLS; the default transport for syslog-ng is TCP or UDP, and the firewall rule allows TCP on destination port 6514, which is the standard syslog-over-TLS port, but the issue is the source port restriction, not the protocol. Option C is wrong because the syslog-ng client does not use UDP by default when configured for TCP-based logging; the firewall rule explicitly allows TCP on destination port 6514, so if the client were using UDP, it would be blocked, but the client's configuration (not shown) would specify the transport, and the core problem is the source port mismatch. Option D is wrong because the firewall rule does not include a source IP restriction; it only specifies source port 6514 and destination port 6514, so the client IP 192.168.1.100 is not filtered out by the rule.

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Option B is wrong because simply increasing bandwidth does not guarantee that replication traffic will be prioritized; without QoS, other data transfers can still saturate the link, and it may not be cost-effective or timely. Option C is wrong because rescheduling the test avoids the problem rather than fixing it; the same issue could occur during a real disaster when other replication activity is unavoidable. Option D is wrong because revising the RTO to 8 hours accepts a degraded recovery capability instead of addressing the technical root cause of traffic prioritization, which could be solved with QoS.

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Option A is wrong because real-time data synchronization requires active replication technologies like synchronous replication or database mirroring, which are not supported by a cold site that has no live systems or network connectivity until activated. Option C is wrong because cold sites actually increase the need for testing, as the recovery process involves manual installation and configuration of hardware and software, which must be validated through regular drills to ensure it works under pressure. Option D is wrong because cold sites have the slowest recovery time (often days or weeks) due to the absence of pre-configured equipment and data, whereas fast recovery is a benefit of hot or warm sites.

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Option A is wrong because notifying law enforcement is a post-containment step, typically done after the scope is understood and evidence is preserved; premature notification can disrupt the response. Option B is wrong because eradicating the malware before containment risks alerting the attacker or causing the ransomware to trigger encryption of additional data; containment must precede eradication. Option C is wrong because restoring from backup before containment can reintroduce the infection if the backup is compromised or if the ransomware is still active on the network; containment ensures the environment is clean before recovery.

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Option A is wrong because a site with replicated data but no active systems describes a cold site with data replication, not a warm site; warm sites have hardware but require data restoration. Option B is wrong because a fully operational site with real-time data synchronization defines a hot site, which has zero recovery time objective (RTO) and continuous replication (e.g., synchronous SAN replication). Option D is wrong because a site with no hardware or infrastructure installed is a cold site, which requires full setup before recovery can begin.

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Option A is wrong because conducting the restore test only during annual drills does not fix the daily operational gap; it merely postpones validation, leaving the recovery process untested and potentially non-compliant with the RTO. Option B is wrong because reducing the RPO (recovery point objective) addresses data loss tolerance, not recovery time; it does not reduce the 5-hour total recovery duration. Option C is wrong because increasing the RTO to 6 hours accepts the inefficiency rather than fixing it; best practice is to improve the process to meet the original RTO, not relax the requirement.

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Option A is wrong because remote desktop access (e.g., RDP) uses TCP port 3389 by default, not a non-standard port, and would typically involve inbound connections, not repeated outbound attempts. Option B is wrong because a port scan involves sending packets to multiple ports on a target to discover open services, not repeated outbound connection attempts from a single server to external IPs on a single non-standard port. Option C is wrong because a legitimate mail server uses standard ports such as TCP 25 (SMTP), 587 (submission), or 993 (IMAPS), and would not repeatedly connect to arbitrary external IPs on a non-standard port.

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Option A is wrong because phishing involves deceptive messages (e.g., emails) to trick users into revealing credentials or installing malware, not a flood of network traffic from many sources. Option C is wrong because a man-in-the-middle attack intercepts and potentially alters communications between two parties, which would show unusual traffic patterns or certificate anomalies, not a high-volume flood from multiple IPs. Option D is wrong because an insider threat originates from within the organization, typically involving unauthorized access or data exfiltration, not a distributed traffic flood from external sources.

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Option A is wrong because 9 hours (since Tuesday 01:00) represents only the interval from the last differential backup to a failure shortly after, not the maximum possible loss; the maximum loss must consider the full period since the last successful backup that can be restored. Option B is wrong because 2 days (data since Monday) overestimates the loss; with differential backups, you can restore from the last full backup plus the latest differential, so data loss is limited to the time since that differential, not the full two days. Option D is wrong because 1 day (data since last full backup) ignores that differential backups reduce the recovery point; the maximum loss is not from the full backup but from the last differential backup that was successfully taken before the failure.

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Option B is wrong because wiping and rebuilding all affected systems destroys forensic evidence and prevents analysis of the ransomware's behavior, encryption keys, or entry point, which is essential for preventing future incidents and potentially recovering data. Option C is wrong because notifying law enforcement immediately is not the next operational step; while it may be required later, the immediate priority is preserving evidence to support any law enforcement investigation, and premature notification without evidence could hinder the response. Option D is wrong because paying the ransom does not guarantee data recovery, encourages further attacks, and violates many organizational policies and legal guidelines; the incident response team should never recommend payment as a first step.

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Option A is wrong because applying patches without first assessing the risk could break the backup site's configuration or introduce new vulnerabilities during the exercise, and it may not be the highest priority action. Option B is wrong because shutting down the backup site would halt the disaster recovery exercise and potentially leave the organization without any failover capability, which is counterproductive. Option D is wrong because simply continuing the exercise without documenting or assessing the issue ignores the security gap and could lead to a false sense of readiness, violating standard incident response procedures (NIST SP 800-61).

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Option B is wrong because the failover process completed successfully in 4 hours, as stated; the question does not indicate any failure in the failover itself. Option C is wrong because data loss can occur even if the secondary site is available, if the replication lag exceeds the RPO. Option D is wrong because the RTO is the maximum acceptable downtime, and the failover took 4 hours; without knowing the RTO value, we cannot conclude it was not met — the question only provides the RPO.

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Option A is wrong because Executive Management provides strategic oversight and approves budget/resource allocation, but they lack the technical expertise to coordinate hands-on incident response activities like network isolation or forensic analysis. Option C is wrong because IT Support focuses on routine user troubleshooting and system maintenance, not on executing the specialized containment and eradication steps required during a ransomware incident, such as analyzing malware indicators of compromise (IOCs) or applying firewall rules. Option D is wrong because the Legal Department handles regulatory compliance, breach notification, and liability issues, but they do not perform the technical coordination of response actions like system restoration or evidence preservation.

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Option A is wrong because using a cloud-based ERP temporarily would require significant setup time, data migration, and potential licensing changes, which likely exceeds the 8-hour RTO and introduces complexity not aligned with the existing BCP. Option B is wrong because a bare-metal restore requires the backup to be in a specific format (e.g., system image) and the spare server to have identical hardware; the backup is to an external hard drive, likely file-level, not a full system image, making a bare-metal restore impractical. Option D is wrong because ordering a new server with a 3-day lead time far exceeds the 8-hour RTO, and the spare server is already available, making this the slowest and least effective course of action.

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Option B is wrong because distance is a consideration for any DR site (hot, warm, or cold) and is not specific to the warm site model; latency can be mitigated with WAN optimization or replication tuning. Option C is wrong because it is essentially a restatement of the data synchronization issue but less precise — the core risk is lack of synchronization, not merely that data 'may not have recent data,' which is a symptom of the synchronization gap. Option D is wrong because high cost of maintaining duplicate hardware is a characteristic of a hot site, not a warm site; a warm site typically has lower hardware costs as it may not run full production-equivalent systems until activation.

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Option A is wrong because air-gapped backups stored offline would prevent encryption of the backup data during the attack, but the question specifically states the backups were on a separate network segment and were encrypted using stored credentials; an air gap does not address the root cause of credential compromise and reuse. Option C is wrong because encrypting backup data at rest and in transit protects the confidentiality of the data but does not prevent an attacker from accessing or encrypting the backup system itself using valid credentials. Option D is wrong because using a separate VLAN for backup traffic provides network segmentation but does not prevent an attacker who has compromised credentials from authenticating to the backup system from within that VLAN or from another compromised host.

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Option A is wrong because a Risk Management Plan identifies, assesses, and mitigates risks before an incident occurs; it does not contain the step-by-step activation procedures for a backup site. Option B is wrong because an Incident Response Plan (IRP) focuses on immediate containment, eradication, and recovery from security incidents (e.g., malware, data breaches), not on activating a backup data center after a natural disaster. Option D is wrong because a Business Continuity Plan (BCP) addresses maintaining critical business functions during a disruption, often through alternative work arrangements or manual processes, but it does not provide the technical failover steps for activating a backup data center.

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Option A is wrong because wiping the host and reinstalling the OS destroys all forensic evidence, preventing root cause analysis and potentially allowing the attacker to persist if the infection vector is not identified. Option C is wrong because reimaging from backup may reintroduce the same vulnerability or malware if the backup is also compromised, and it skips the critical step of evidence preservation and analysis. Option D is wrong because notifying law enforcement is premature before internal investigation confirms the incident's nature and scope; law enforcement involvement typically occurs after evidence is preserved and a decision is made to pursue legal action, not as an immediate next step.

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Option A is wrong because scanning the system and detecting Trojan.Downloader at 14:30 is a detection and analysis step, not containment; containment must happen before or concurrently with analysis to stop lateral movement. Option B is wrong because removing malware via AV at 14:45 is an eradication step, which occurs after containment to eliminate the threat from the isolated system. Option D is wrong because escalating to the incident handler at 14:35 is a communication and coordination step, not a technical containment action; it does not directly stop the threat from spreading.

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Option A is wrong because deleting infected files and rebuilding from scratch without involving backups discards all data, including potentially unencrypted files, and ignores the need for verified clean backups to restore operations. Option B is wrong because ignoring the incident allows ransomware to spread, encrypt more systems, and cause greater business disruption, violating basic incident response containment principles. Option C is wrong because paying the ransom does not guarantee decryption keys will be provided, encourages further attacks, and bypasses proper forensic investigation and recovery procedures.

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Option B is wrong because colocation with tape backups shipped offsite has an RTO of 24 hours and RPO of 24 hours, far exceeding the 4-hour RTO requirement, and tape restoration is slow and prone to media errors. Option C is wrong because a cold site with weekly full backups has an RTO of 48 hours and RPO of 7 days, meaning applications would be down for two days and up to a week of data could be lost, completely failing the 4-hour RTO. Option D is wrong because a warm site with daily incremental backups has an RTO of 6 hours, which exceeds the 4-hour requirement, and the RPO of 4 hours still risks losing up to 4 hours of transactions, whereas synchronous replication offers near-zero data loss.

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Option B is wrong because Mean Time Between Failures (MTBF) measures the average time between system failures, not data loss; it is a reliability metric used for hardware or component failure prediction. Option C is wrong because Mean Time to Repair (MTTR) measures the average time required to restore a failed system or component, not the acceptable data loss window. Option D is wrong because Recovery Time Objective (RTO) defines the maximum acceptable downtime after a disaster, not the amount of data loss measured in time; RTO focuses on service restoration speed, while RPO focuses on data currency.

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Option A is wrong because hot sites require more complex maintenance, including continuous data replication and live system updates, whereas cold sites have minimal upkeep. Option C is wrong because a hot site does not inherently provide greater security; security depends on the specific controls implemented at each site, and both hot and cold sites can be equally secure. Option D is wrong because a hot site is far more expensive than a cold site due to the cost of maintaining duplicate hardware, software licenses, and ongoing data synchronization.

Why this order

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Option B is wrong because contacting the vendor is a tactical step that should be performed after the DRP is activated, as the plan specifies when and how to engage vendors. Option C is wrong because restoring from offsite tape is a specific recovery action that must be directed by the DRP, which first requires assessing the situation and authorizing the restore process. Option D is wrong because ordering replacement hardware is a procurement action that occurs later in the recovery timeline, after the DRP has been activated and a gap analysis has been performed.

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Option A is wrong because reducing the RTO to 1 hour does not fix the underlying problem—the restore process still takes 3 hours, and simply changing a target number without improving the technology does not achieve compliance. Option B is wrong because increasing backup frequency reduces the recovery point objective (RPO), not the recovery time objective (RTO); the restore time remains 3 hours regardless of how often backups are taken. Option D is wrong because quarterly restoration testing validates that backups work but does not reduce the 3-hour restore time; testing alone cannot bring the RTO below the MTD.

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Option A is wrong because the RPO for daily full backups is fixed at 24 hours, which may be acceptable for many organizations; the question asks for the primary risk, and RPO is not inherently too long—it depends on the business requirement. Option C is wrong because daily full backups do not inherently have high storage cost; in fact, they can be more storage-efficient than combining full and incremental backups if retention is short, and cost is not the primary risk. Option D is wrong because data corruption spreading across backups is a risk associated with any backup strategy, not specific to daily full backups; it is not the primary risk highlighted by this approach.

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Option B is wrong because Post-incident activity is the final phase that occurs after Recovery, involving lessons learned, documentation, and evidence retention. Option C is wrong because Detection and analysis occurs before containment/eradication, not after. Option D is wrong because Preparation is the initial phase that happens before any incident occurs, establishing policies, tools, and training.

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Option B (Continuity of Operations Plan) is wrong because it is a U.S. government-specific framework (COOP) focused on maintaining essential government functions at an alternate facility, not a general business continuity document. Option C (Incident Response Plan) is wrong because it focuses on detecting, containing, and eradicating security incidents (e.g., malware outbreaks or data breaches), not on maintaining ongoing business functions during a disruption. Option D (Disaster Recovery Plan) is wrong because it is a subset of BCP that specifically addresses the recovery of IT infrastructure and systems after a disaster, not the broader maintenance of critical business functions.

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Option B (Mobile site) is wrong because a mobile site is a portable, temporary facility (e.g., a trailer) that may not have full IT capabilities pre-installed and is used for short-term emergencies, not as a permanent alternate work site with full IT readiness. Option C (Cold site) is wrong because a cold site provides only basic physical infrastructure (space, power, cooling) but lacks IT equipment, requiring days or weeks to procure and configure systems, which contradicts 'full IT capabilities.' Option D (Warm site) is wrong because a warm site has some pre-installed hardware and connectivity but not full IT capabilities; it typically requires additional configuration and data restoration before operations can resume, making it slower than a hot site.

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Option A is wrong because reporting to the regulatory authority immediately (within 72 hours) is a post-containment step; the priority is to stop the active C2 communication and data loss first. Option B is wrong because performing forensic analysis on a live, compromised server connected to a C2 server risks altering evidence and allows continued data exfiltration; containment must precede forensics. Option D is wrong because keeping the server online under close monitoring does not stop the active outbound traffic to the C2 server, allowing ongoing data exfiltration and potential lateral movement, which violates the containment principle.

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Option A is wrong because synchronous replication ensures that data is written to both sites before acknowledging the write, resulting in an RPO of zero (no data loss), not high RPO. Option B is wrong because data encryption overhead is a general security concern unrelated to the replication method or distance; it applies equally to any encrypted data transfer. Option C is wrong because insufficient bandwidth between sites is a capacity planning issue that can affect replication throughput but is not inherently introduced by synchronous replication or distance; latency is the primary risk, not bandwidth.

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Option A is wrong because disabling the web application immediately could cause unnecessary business disruption and may destroy volatile evidence (e.g., running processes, memory contents) before the incident is confirmed. Option B is wrong because blocking the source IP in the firewall is a containment action that should only occur after the alert is verified and the scope of the incident is understood; premature blocking could also block legitimate traffic if the IP is spoofed or shared. Option C is wrong because ignoring the alert as a false positive without investigation violates the fundamental incident response principle of 'trust but verify' and could allow an actual breach to go undetected.

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Option A is wrong because the CISO (Chief Information Security Officer) oversees the technical incident response but does not have the authority to approve external law enforcement contact; that decision requires legal review to avoid legal exposure. Option B is wrong because the CEO (Chief Executive Officer) may be informed but is not the required approver for law enforcement contact; legal counsel must assess the legal implications first. Option D is wrong because Public Relations handles external communications and reputation management but has no authority to approve law enforcement involvement; contacting law enforcement without legal approval could violate privacy regulations and damage the organization's legal standing.

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Option A (RTO) is wrong because RTO (Recovery Time Objective) defines the maximum acceptable downtime, not data loss; it measures how quickly systems must be restored after a disaster. Option C (SLA) is wrong because SLA (Service Level Agreement) is a contractual commitment between a provider and customer covering performance metrics like uptime, not a specific measure of tolerable data loss. Option D (MTBF) is wrong because MTBF (Mean Time Between Failures) is a reliability metric that predicts the average time between system failures, not a measure of data loss tolerance.

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Option A is wrong because network connectivity, while important for replication and access, is not the root cause here—the standby site has a replica, implying connectivity exists. Option B is wrong because the replication configuration is correct (the standby has a replica), so the issue is not with replication setup but with authorization to promote. Option C is wrong because while the failover procedure may not be documented, the core problem is the lack of privileges to execute any documented procedure—documentation alone does not grant access rights.

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Option B is wrong because the implicit deny at the end of the ACL blocks all traffic not explicitly permitted, but that alone would also block HTTP if the ACL were correctly placed; the fact that HTTP works indicates the ACL is not blocking outbound traffic from the inside, so the implicit deny is not the root cause. Option C is wrong because HTTPS uses TCP port 443 for the initial outbound connection, and return traffic is statefully allowed by the Cisco IOS firewall or router if the ACL is applied correctly; the issue is not missing return traffic rules but the ACL's application direction. Option D is wrong because the exhibit does not show an explicit deny for TCP port 443; the ACL only permits HTTP, so HTTPS is implicitly denied, not explicitly denied.