312-50v12題庫更新資訊：Certified Ethical Hacker Exam考試最新發布|更新的ECCouncil 312-50v12考試資訊

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ECCouncil 312-50v12 考試大綱：

主題	簡介
主題 1	Cloud Computing, Types of Cloud Computing Services, Cloud Deployment Models, Fog and Edge Computing Vulnerability Analysis
主題 2	IoT Architecture, IoT Communication Models, OWASP Top 10 IoT Threats, IoT Vulnerabilities Denial-of-Service
主題 3	Foot Printing and Reconnaissance Social Engineering, Types of Social Engineering, Phishing, Phishing Tools
主題 4	Man-in-the-Browser Attack, Client-side Attacks, Session Replay Attacks, Session Fixation Attack IoT Hacking Methodology, IoT Hacking Tools, IoT Security Tools, IT OT Convergence (IIOT)
主題 5	Mobile Platform Attack Vectors, OWASP Top 10 Mobile Risks, App Sandboxing Wireless Terminology, Wireless Networks, Wireless Encryption
主題 6	SQL Injection, Types of SQL injection, Blind SQL Injection Web Application Architecture, Web Application Threats, OWASP Top 10 Application Security Risks
主題 7	Cryptography Encryption Algorithms, MD5 and MD6 Hash Calculators, Cryptography Tools, Public Key Infrastructure (PKI)
主題 8	Hacking Mobile Platforms DoS Attack, DDoS Attack, Botnets, DoS DDoS Attack Techniques
主題 9	Introduction to Ethical Hacking Malware, Components of Malware, APT, Trojan, Types of Trojans, Exploit Kits, Virus, Virus Lifecycle
主題 10	Network Sniffing, Wiretapping, MAC Flooding, DHCP Starvation Attack, ARP Spoofing Attack Hacking Web Applications

最新的 CEH v12 312-50v12 免費考試真題 (Q29-Q34):

問題 #29
What is the algorithm used by LM for Windows2000 SAM?

A. SHA
B. MD4
C. DES
D. SSL

答案：C

問題 #30
Which of the following allows attackers to draw a map or outline the target organization's network infrastructure to know about the actual environment that they are going to hack.

A. Malware analysis
B. Vulnerability analysis
C. Scanning networks
D. Enumeration

答案：C

解題說明：
Objectives of Footprinting Draw Network Map - Combining footprinting techniques with tools such as Tracert allows the attacker to create diagrammatic representations of the target organization's network presence. Specficially, it allows attackers to draw a map or outline of the target organization's network infrastructure to know about the actual environment that they are going to break into. These network diagrams can guide the attacker in performing an attack. (P.114/98)

問題 #31
What is one of the advantages of using both symmetric and asymmetric cryptography in SSL/TLS?

A. Symmetric algorithms such as AES provide a failsafe when asymmetric methods fail.
B. Asymmetric cryptography is computationally expensive in comparison. However, it is well-suited to securely negotiate keys for use with symmetric cryptography.
C. Supporting both types of algorithms allows less-powerful devices such as mobile phones to use symmetric encryption instead.
D. Symmetric encryption allows the server to security transmit the session keys out-of-band.

答案：C

問題 #32
Andrew is an Ethical Hacker who was assigned the task of discovering all the active devices hidden by a restrictive firewall in the IPv4 range in a given target network.
Which of the following host discovery techniques must he use to perform the given task?

A. UDP scan
B. arp ping scan
C. TCP Maimon scan
D. ACK flag probe scan

答案：B

解題說明：
One of the most common Nmap usage scenarios is scanning an Ethernet LAN. Most LANs, especially those that use the private address range granted by RFC 1918, do not always use the overwhelming majority of IP addresses. When Nmap attempts to send a raw IP packet, such as an ICMP echo request, the OS must determine a destination hardware (ARP) address, such as the target IP, so that the Ethernet frame can be properly addressed. .. This is required to issue a series of ARP requests. This is best illustrated by an example where a ping scan is attempted against an Area Ethernet host. The -send-ip option tells Nmap to send IP-level packets (rather than raw Ethernet), even on area networks. The Wireshark output of the three ARP requests and their timing have been pasted into the session.
Raw IP ping scan example for offline targets
This example took quite a couple of seconds to finish because the (Linux) OS sent three ARP requests at 1 second intervals before abandoning the host. Waiting for a few seconds is excessive, as long as the ARP response usually arrives within a few milliseconds. Reducing this timeout period is not a priority for OS vendors, as the overwhelming majority of packets are sent to the host that actually exists. Nmap, on the other hand, needs to send packets to 16 million IP s given a target like 10.0.0.0/8. Many targets are pinged in parallel, but waiting 2 seconds each is very delayed.
There is another problem with raw IP ping scans on the LAN. If the destination host turns out to be unresponsive, as in the previous example, the source host usually adds an incomplete entry for that destination IP to the kernel ARP table. ARP tablespaces are finite and some operating systems become unresponsive when full. If Nmap is used in rawIP mode (-send-ip), Nmap may have to wait a few minutes for the ARP cache entry to expire before continuing host discovery.
ARP scans solve both problems by giving Nmap the highest priority. Nmap issues raw ARP requests and handles retransmissions and timeout periods in its sole discretion. The system ARP cache is bypassed. The example shows the difference. This ARP scan takes just over a tenth of the time it takes for an equivalent IP.
Example b ARP ping scan of offline target

In example b, neither the -PR option nor the -send-eth option has any effect. This is often because ARP has a default scan type on the Area Ethernet network when scanning Ethernet hosts that Nmap discovers. This includes traditional wired Ethernet as 802.11 wireless networks. As mentioned above, ARP scanning is not only more efficient, but also more accurate. Hosts frequently block IP-based ping packets, but usually cannot block ARP requests or responses and communicate over the network.Nmap uses ARP instead of all targets on equivalent targets, even if different ping types (such as -PE and -PS) are specified. LAN.. If you do not need to attempt an ARP scan at all, specify -send-ip as shown in Example a "Raw IP Ping Scan for Offline Targets".
If you give Nmap control to send raw Ethernet frames, Nmap can also adjust the source MAC address. If you have the only PowerBook in your security conference room and a large ARP scan is initiated from an Apple-registered MAC address, your head may turn to you. Use the -spoof-mac option to spoof the MAC address as described in the MAC Address Spoofing section.

問題 #33
ViruXine.W32 virus hides their presence by changing the underlying executable code.
This Virus code mutates while keeping the original algorithm intact, the code changes itself each time it runs, but the function of the code (its semantics) will not change at all.

Here is a section of the Virus code:

What is this technique called?