[2026年02月27日] 300-215問題集でCyberOps Professional合格確定させる練習問題集 [Q20-Q34]

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[2026年02月27日]PassTest 300-215問題集でCyberOps Professional合格確定させる練習問題集

Cisco 300-215実際にある問題とブレーン問題集

質問20、 Refer to the exhibit.

A web hosting company analyst is analyzing the latest traffic because there was a 20% spike in server CPU usage recently. After correlating the logs, the problem seems to be related to the bad actor activities. Which attack vector is used and what mitigation can the analyst suggest?

SQL Injection; implement input validation and use parameterized queries.

Distributed denial of service; use rate limiting and DDoS protection services.

Phishing attack; conduct regular user training and use email filtering solutions.

Brute-force attack; implement account lockout policies and roll out MFA.

質問21、

JavaScript

Base64

ascii85

hexadecimal

質問22、 An organization fell victim to a ransomware attack that successfully infected 256 hosts within its network. In the aftermath of this incident, the organization’s cybersecurity team must prepare a thorough root cause analysis report. This report aims to identify the primary factor or factors that led to the successful ransomware attack and to develop strategies for preventing similar incidents in the future. In this context, what should the cybersecurity engineer include in the root cause analysis report to demonstrate the underlying cause of the incident?

log files from each of the 256 infected hosts

detailed information about the specific team members involved in the incident response effort

method of infection employed by the ransomware

complete threat intelligence report shared by the National CERT Association

質問23、 Refer to the exhibit.

Which encoding method is used to obfuscate the script?

ASCII85 encoding

Base64 encoding

metamorphic encoding

hex encoding

質問24、 What is a use of TCPdump?

to analyze IP and other packets

to view encrypted data fields

to decode user credentials

to change IP ports

質問25、 What are YARA rules based upon?

binary patterns

HTML code

network artifacts

IP addresses

質問26、 Refer to the exhibit.

After a cyber attack, an engineer is analyzing an alert that was missed on the intrusion detection system. The attack exploited a vulnerability in a business-critical, web-based application and violated its availability.
Which two mitigation techniques should the engineer recommend? (Choose two.)

encapsulation

NOP sled technique

address space randomization

heap-based security

data execution prevention

質問27、 Refer to the exhibit.

What should be determined from this Apache log?

A module named mod_ssl is needed to make SSL connections.

The private key does not match with the SSL certificate.

The certificate file has been maliciously modified

The SSL traffic setup is improper

質問28、

Refer to the exhibit. A network administrator creates an Apache log parser by using Python. What needs to be added in the box where the code is missing to accomplish the requirement?

r’d(1,3),d(1.3),d{13}.df{1,3}’

r’*b’

r”b{1-9}[0-9}b’

r’d{1,3}.d{1,3}.d{1,3}.d{1,3}’

質問29、 Refer to the exhibit.

An engineer received a ticket to analyze a recent breach on a company blog. Every time users visit the blog, they are greeted with a message box. The blog allows users to register, log in, create, and provide comments on various topics. Due to the legacy build of the application, it stores user information in the outdated MySQL database. What is the recommended action that an engineer should take?

Validate input on arrival as strictly as possible.

Implement TLS 1.3 for external communications.

Match the web server software for the front-end and back-end servers.

Upgrade the MySQL database.

質問30、 Refer to the exhibit.

After a cyber attack, an engineer is analyzing an alert that was missed on the intrusion detection system. The attack exploited a vulnerability in a business critical, web-based application and violated its availability. Which two migration techniques should the engineer recommend? (Choose two.)

encapsulation

NOP sled technique

address space randomization

heap-based security

data execution prevention

質問31、 An investigator notices that GRE packets are going undetected over the public network. What is occurring?

encryption

tunneling

decryption

steganography

質問32、 Refer to the exhibit.

A company that uses only the Unix platform implemented an intrusion detection system. After the initial configuration, the number of alerts is overwhelming, and an engineer needs to analyze and classify the alerts. The highest number of alerts were generated from the signature shown in the exhibit. Which classification should the engineer assign to this event?

True Negative alert

False Negative alert

False Positive alert

True Positive alert

質問33、 Refer to the exhibit.

What is the IOC threat and URL in this STIX JSON snippet?

malware;
‘http://x4z9arb.cn/4712/’

malware; x4z9arb backdoor

x4z9arb backdoor;http://x4z9arb.cn/4712/

malware; malware–162d917e-766f-4611-b5d6-652791454fca

stix;
‘http://x4z9arb.cn/4712/’

質問34、 During an overnight shift, a cybersecurity team at a global trading firm detects irregular activity The network intrusion system flags an encrypted traffic spike from high-value transaction servers to an anonymous Tor exit node Simultaneously, internal surveillance tools report unusual database queries and access patterns resembling exfiltration techniques Which focused action should the team take first to analyze and address these potential security threats?

Initiate immediate containment protocols tor transaction servers.

Implement dynamic firewall rules to block suspicious outbound connections

Cross-reference database access logs with user activity profiles

Engage advanced decryption and anomaly analysis for the flagged traffic