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Upgrade Your Professional Career by Obtaining the The SecOps Group CNSP Certification
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The SecOps Group CNSP Exam Syllabus Topics:
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The SecOps Group Certified Network Security Practitioner Sample Questions (Q49-Q54):
NEW QUESTION # 49
Which command will perform a DNS zone transfer of the domain "victim.com" from the nameserver at 10.0.0.1?
Answer: B
Explanation:
A DNS zone transfer replicates an entire DNS zone (a collection of DNS records for a domain) from a primary nameserver to a secondary one, typically for redundancy or load balancing. The AXFR (Authoritative Full Zone Transfer) query type, defined in RFC 1035, facilitates this process. The dig (Domain Information Groper) tool, a staple in Linux/Unix environments, is used to query DNS servers. The correct syntax is:
dig @<nameserver> <domain> axfr
Here, dig @10.0.0.1 victim.com axfr instructs dig to request a zone transfer for "victim.com" from the nameserver at 10.0.0.1. The @ symbol specifies the target server, overriding the system's default resolver.
Technical Details:
The AXFR query is sent over TCP (port 53), not UDP, due to the potentially large size of zone data, which exceeds UDP's typical 512-byte limit (pre-EDNS0).
Successful execution requires the nameserver to permit zone transfers from the querying IP, often restricted to trusted secondaries via Access Control Lists (ACLs) for security. If restricted, the server responds with a "REFUSED" error.
Security Implications: Zone transfers expose all DNS records (e.g., A, MX, NS), making them a reconnaissance goldmine for attackers if misconfigured. CNSP likely emphasizes securing DNS servers against unauthorized AXFR requests, using tools like dig to test vulnerabilities.
Why other options are incorrect:
A . dig @10.0.0.1 victim.com axrfr: "axrfr" is a typographical error. The correct query type is "axfr." Executing this would result in a syntax error or an unrecognized query type response from dig.
B . dig @10.0.0.1 victim.com afxr: "afxr" is another typo, not a valid DNS query type per RFC 1035. dig would fail to interpret this, likely outputting an error like "unknown query type." C . dig @10.0.0.1 victim.com arfxr: "arfxr" is also invalid, a jumbled version of "axfr." It holds no meaning in DNS protocol standards and would fail similarly.
Real-World Context: Penetration testers use dig ... axfr to identify misconfigured DNS servers. For example, dig @ns1.example.com example.com axfr might reveal subdomains or internal IPs if not locked down.
NEW QUESTION # 50
Which of the following protocols is not vulnerable to address spoofing attacks if implemented correctly?
Answer: D
Explanation:
Address spoofing fakes a source address (e.g., IP, MAC) to impersonate or amplify attacks. Analyzing protocol resilience:
C . TCP (Transmission Control Protocol):
Mechanism: Three-way handshake (SYN, SYN-ACK, ACK) verifies both endpoints.
Client SYN (Seq=X), Server SYN-ACK (Seq=Y, Ack=X+1), Client ACK (Ack=Y+1).
Spoofing Resistance: Spoofer must predict the server's sequence number (randomized in modern stacks) and receive SYN-ACK, impractical without session hijacking or MITM.
Correct Implementation: RFC 793-compliant, with anti-spoofing (e.g., Linux tcp_syncookies).
A . UDP:
Connectionless (RFC 768), no handshake. Spoofed packets (e.g., source IP 1.2.3.4) are accepted if port is open, enabling reflection attacks (e.g., DNS amplification).
B . ARP (Address Resolution Protocol):
No authentication (RFC 826). Spoofed ARP replies (e.g., fake MAC for gateway IP) poison caches, enabling MITM (e.g., arpspoof).
D . IP:
No inherent validation at Layer 3 (RFC 791). Spoofed source IPs pass unless filtered (e.g., ingress filtering, RFC 2827).
Security Implications: TCP's handshake makes spoofing harder, though not impossible (e.g., blind spoofing with sequence prediction, mitigated since BSD 4.4). CNSP likely contrasts this with UDP/IP's vulnerabilities in DDoS contexts.
Why other options are incorrect:
A, B, D: Lack handshake or authentication, inherently spoofable.
Real-World Context: TCP spoofing was viable pre-1990s (e.g., Mitnick attack); modern randomization thwarts it.
NEW QUESTION # 51
Which of the following is true for SNMP?
A) The default community string for read-only access is "public."
B) The default community string for read/write access is "private."
Answer: A
Explanation:
SNMP community strings authenticate access, with defaults posing security risks if unchanged.
Why C is correct:
A: "public" is the standard read-only default, per SNMP specs and CNSP.
B: "private" is the standard read-write default, also per SNMP and CNSP.
Both are true, making C the answer.
Why other options are incorrect:
1, 2: Exclude one true statement each.
4: Both statements are true, so "none" is wrong.
NEW QUESTION # 52
On a Microsoft Windows operating system, what does the following command do?
net localgroup Sales Sales_domain /add
Answer: D
Explanation:
The net localgroup command manages local group memberships on Windows systems, with syntax dictating its action.
Why B is correct: net localgroup Sales Sales_domain /add adds the domain group Sales_domain to the local group Sales, granting its members local group privileges. CNSP covers this for privilege escalation testing.
Why other options are incorrect:
A: Displaying users requires net localgroup Sales without /add.
C: Adding a user requires a username, not a group name like Sales_domain.
D: The reverse (local to domain) uses net group, not net localgroup.
NEW QUESTION # 53
Which of the following commands will work on a Microsoft operating system to add a new domain admin user?
Answer: C
Explanation:
Adding a user to a domain group like "Domain Admins" requires the correct command and scope (domain vs. local).
Why A is correct: net group "Domain Admins" John /add /domain adds user John to the domain-level "Domain Admins" group, per CNSP's domain privilege management.
Why other options are incorrect:
B: net user creates users, not group memberships; syntax is wrong.
C: /admin is invalid; correct group specification is missing.
D: Targets local "Administrator" group, not domain "Domain Admins".
NEW QUESTION # 54
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