Free Access to ECCouncil.312-50v12.v2024-07-08.q287 with Valid Practice Test (Page 43)

Question 206

Bob, a system administrator at TPNQM SA, concluded one day that a DMZ is not needed if he properly configures the firewall to allow access just to servers/ports, which can have direct internet access, and block the access to workstations.
Bob also concluded that DMZ makes sense just when a stateful firewall is available, which is not the case of TPNQM SA.
In this context, what can you say?

A.Bob can be right since DMZ does not make sense when combined with stateless firewalls
B.Bob is partially right. He does not need to separate networks if he can create rules by destination IPs, one by one
C.Bob is partially right. DMZ does not make sense when a stateless firewall is available
D.Bob is totally wrong. DMZ is always relevant when the company has internet servers and workstations

Question 207

Upon establishing his new startup, Tom hired a cloud service provider (CSP) but was dissatisfied with their service and wanted to move to another CSP.
What part of the contract might prevent him from doing so?

A.Virtualization
B.Lock-in
C.Lock-down
D.Lock-up

Question 208

jane invites her friends Alice and John over for a LAN party. Alice and John access Jane's wireless network without a password. However. Jane has a long, complex password on her router. What attack has likely occurred?

A.Wireless sniffing
B.Piggybacking
C.Evil twin
D.Wardriving

Question 209

What would be the purpose of running "wget 192.168.0.15 -q -S" against a web server?

A.Performing content enumeration on the web server to discover hidden folders
B.Using wget to perform banner grabbing on the webserver
C.Flooding the web server with requests to perform a DoS attack
D.Downloading all the contents of the web page locally for further examination

Question 210

You are the Network Admin, and you get a complaint that some of the websites are no longer accessible. You try to ping the servers and find them to be reachable. Then you type the IP address and then you try on the browser, and find it to be accessible. But they are not accessible when you try using the URL.
What may be the problem?

A.Traffic is Blocked on UDP Port 53
B.Traffic is Blocked on TCP Port 80
C.Traffic is Blocked on TCP Port 54
D.Traffic is Blocked on UDP Port 80

Correct Answer: A

Most likely have an issue with DNS.
DNS stands for "Domain Name System." It's a system that lets you connect to websites by matching human-readable domain names (like example.com) with the server's unique ID where a website is stored.
Think of the DNS system as the internet's phonebook. It lists domain names with their corresponding identifiers called IP addresses, instead of listing people's names with their phone numbers. When a user enters a domain name like wpbeginner.com on their device, it looks up the IP address and connects them to the physical location where that website is stored.
NOTE: Often DNS lookup information will be cached locally inside the querying computer or remotely in the DNS infrastructure. There are typically 8 steps in a DNS lookup. When DNS information is cached, steps are skipped from the DNS lookup process, making it quicker. The example below outlines all 8 steps when nothing is cached.
The 8 steps in a DNS lookup:
1. A user types 'example.com' into a web browser, and the query travels into the Internet and is received by a DNS recursive resolver;
2. The resolver then queries a DNS root nameserver;
3. The root server then responds to the resolver with the address of a Top-Level Domain (TLD) DNS server (such as .com or .net), which stores the information for its domains. When searching for example.com, our request is pointed toward the .com TLD;
4. The resolver then requests the .com TLD;
5. The TLD server then responds with the IP address of the domain's nameserver, example.com;
6. Lastly, the recursive resolver sends a query to the domain's nameserver;
7. The IP address for example.com is then returned to the resolver from the nameserver;
8. The DNS resolver then responds to the web browser with the IP address of the domain requested initially; Once the 8 steps of the DNS lookup have returned the IP address for example.com, the browser can request the web page:
9. The browser makes an HTTP request to the IP address;
10. The server at that IP returns the webpage to be rendered in the browser.
NOTE 2: DNS primarily uses the User Datagram Protocol (UDP) on port number 53 to serve requests. And if this port is blocked, then a problem arises already in the first step. But the ninth step is performed without problems.

Question 206

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