Latest CompTIA SY0-401 Exam Questions – [Feb-2018 Dumps]

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Latest and Most Accurate CompTIA SY0-401 Dumps Exam Questions and Answers:

Question: 21

When designing a new network infrastructure, a security administrator requests that the intranet web server be placed in an isolated area of the network for security purposes. Which of the following design elements would be implemented to comply with the security administrator’s request?

A. DMZ
B. Cloud services
C. Virtualization
D. Sandboxing

Answer: A

Explanation:
A demilitarized zone (DMZ) is an area of a network that is designed specifically for public users to access. The DMZ is a buffer network between the public untrusted Internet and the private trusted LAN. Often a DMZ is deployed through the use of a multihomed firewall.
Incorrect Answers:
B: A private cloud is a cloud service within a corporate network and isolated from the Internet. The private cloud is for internal use only.
C: D: Virtualization offers several benefits, such as being able to launch individual instances of servers or services as needed, real-time scalability, and the ability to run the exact OS version required for a certain application.
D: Sandboxing is a means of quarantine or isolation. It’s implemented to restrict new or otherwise suspicious software from being able to cause harm to production systems. It can be used against applications or entire OSs.
References:
Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, pp. 37, 38, 39, 250

Question: 22

Which of the following BEST describes a demilitarized zone?

A. A buffer zone between protected and unprotected networks.
B. A network where all servers exist and are monitored.
C. A sterile, isolated network segment with access lists.
D. A private network that is protected by a firewall and a VLAN.

Answer: A

Explanation:
A demilitarized zone (DMZ) is an area of a network that is designed specifically for public users to access. The DMZ is a buffer network between the public untrusted Internet and the private trusted LAN. Often a DMZ is deployed through the use of a multihomed firewall.
Incorrect Answers:
B: The location and monitoring of servers would not occur in a DMZ as it is exposed to the public.
C: This describes a VLAN.
D: This describes a VPN.
References:
Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, p. 39
http://en.wikipedia.org/wiki/Virtual_private_network

Question: 23

The security administrator at ABC company received the following log information from an external party:
10:45:01 EST, SRC 10.4.3.7:3056, DST 8.4.2.1:80, ALERT, Directory traversal
10:45:02 EST, SRC 10.4.3.7:3057, DST 8.4.2.1:80, ALERT, Account brute force
10:45:03 EST, SRC 10.4.3.7:3058, DST 8.4.2.1:80, ALERT, Port scan
The external party is reporting attacks coming from abc-company.com. Which of the following is the reason the ABC company’s security administrator is unable to determine the origin of the attack?

A. A NIDS was used in place of a NIPS.
B. The log is not in UTC.
C. The external party uses a firewall.
D. ABC company uses PAT.

Answer: D

Explanation:
PAT would ensure that computers on ABC’s LAN translate to the same IP address, but with a different port number assignment. The log information shows the IP address, not the port number, making it impossible to pin point the exact source.
Incorrect Answers:
A: A network-based IDS (NIDS) watches network traffic in real time. It’s reliable for detecting network-focused attacks, such as bandwidth-based DoS attacks. This will not have any bearing on the security administrator at ABC Company finding the root of the attack.
B: UTC is the abbreviation for Coordinated Universal Time, which is the primary time standard by which the world regulates clocks and time. The time in the log is not the issue in this case.
C: Whether the external party uses a firewall or not will not have any bearing on the security administrator at ABC Company finding the root of the attack.
References:
http://www.webopedia.com/TERM/P/PAT.html
http://en.wikipedia.org/wiki/Intrusion_prevention_system
http://en.wikipedia.org/wiki/Coordinated_Universal_Time

Question: 24

Which of the following security devices can be replicated on a Linux based computer using IP tables to inspect and properly handle network based traffic?

A. Sniffer
B. Router
C. Firewall
D. Switch

Answer: C

Explanation:
Ip tables are a user-space application program that allows a system administrator to configure the tables provided by the Linux kernel firewall and the chains and rules it stores.
Incorrect Answers:
A: A sniffer is a tool used in the process of monitoring the data that is transmitted across a network.
B, D: A router is connected to two or more data lines from different networks, whereas a network switch is connected to data lines from one single network. These may include a firewall, but not by default.
References:
http://en.wikipedia.org/wiki/Iptables
Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex, Indianapolis, 2014, p. 342
http://en.wikipedia.org/wiki/Router_(computing)

Question: 25

Which of the following firewall types inspects Ethernet traffic at the MOST levels of the OSI model?

A. Packet Filter Firewall
B. Stateful Firewall
C. Proxy Firewall
D. Application Firewall

Answer: B

Explanation:
Stateful inspections occur at all levels of the network.
Incorrect Answers:
A: Packet-filtering firewalls operate at the Network layer (Layer 3) and the Transport layer (Layer 4) of the Open Systems Interconnect (OSI) model.
C: The proxy function can occur at either the application level or the circuit level.
D: Application Firewalls operates at the Application layer (Layer7) of the OSI model.
References:
Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex, Indianapolis, 2014, pp. 98-100
Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, p. 6

Question: 26

The Chief Information Security Officer (CISO) has mandated that all IT systems with credit card data be segregated from the main corporate network to prevent unauthorized access and that access to the IT systems should be logged. Which of the following would BEST meet the CISO’s requirements?

A. Sniffers
B. NIDS
C. Firewalls
D. Web proxies
E. Layer 2 switches

Answer: C

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