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SY0-401 Domain | % of Examination
1.0 Network Security 20%
2.0 Compliance and Operational Security 18%
3.0 Threats and Vulnerabilities 20%
4.0 Application, Data and Host Security 15%
5.0 Access Control and Identity Management 15%
6.0 Cryptography 12%

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Exam Code: SY0-401
Exam Name: CompTIA Security+ Certification
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CompTIA SY0-401 Bootcamp 1750 Q&As
Updated: 04-25,2016
SY0-401 Exam Tests Detail: SY0-401 Bootcamp

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NO.1 Which statement is TRUE about the operation of a packet sniffer?
A. It can only have one interface on a management network.
B. The Ethernet card must be placed in promiscuous mode.
C. It must be placed on a single virtual LAN interface.
D. They are required for firewall operation and stateful inspection.
Answer: B
SY0-401 Test Questions   
Explanation:
A sniffer (packet sniffer) is a tool that intercepts data flowing in a network. If computers are
connected to a local area network that is not filtered or switched, the traffic can be broadcast to all
computers contained in the same segment. This doesn't generally occur, since computers are
generally told to ignore all the comings and goings of traffic from other computers. However, in the
case of a sniffer, all traffic is shared when the sniffer software commands the Network Interface Card
(NIC) to stop ignoring the traffic. The NIC is put into promiscuous mode, and it reads communications
between computers within a particular segment. This allows the sniffer to seize everything that is
flowing in the network, which can lead to the unauthorized access of sensitive data. A packet sniffer
can take the form of either a hardware or software solution. A sniffer is also known as a packet
analyzer.
NO.2 Matt, a systems security engineer, is determining which credential-type authentication to use
within a planned 802.1x deployment. He is looking for a method that does not require a client
certificate, has a server side certificate, and uses TLS tunnels for encryption. Which credential type
authentication method BEST fits these requirements?
A. PEAP-MSCHAPv2
B. EAP-TLS
C. EAP-FAST
D. PEAP-CHAP
Answer: A
Explanation:
PEAP-MS-CHAP v2 is easier to deploy than EAP-TLS or PEAP-TLS because user authentication is
accomplished via password-base credentials (user name and password) rather than digital certificates
or smart cards. Only servers running Network Policy Server (NPS) or PEAP-MS-CHAP v2 are required
to have a certificate.
NO.3 An IT security technician needs to establish host based security for company workstations.
Which of the following will BEST meet this requirement?
A. Implement IIS hardening by restricting service accounts.
B. Implement database hardening by applying vendor guidelines.
C. Implement OS hardening by applying GPOs.
D. Implement perimeter firewall rules to restrict access.
Answer: C
Explanation:
Hardening is the process of securing a system by reducing its surface of vulnerability. Reducing the
surface of vulnerability typically includes removing or disabling unnecessary functions and features,
removing or disabling unnecessary user accounts, disabling unnecessary protocols and ports, and
disabling unnecessary services. This can be implemented using the native security features of an
operating system, such as Group Policy Objects (GPOs).
NO.4 DRAG DROP
A forensic analyst is asked to respond to an ongoing network attack on a server. Place the items in
the list below in the correct order in which the forensic analyst should preserve them.
Answer:
Explanation:
When dealing with multiple issues, address them in order of volatility (OOV); always deal with the
most volatile first. Volatility can be thought of as the amount of time that you have to collect certain
data before a window of opportunity is gone. Naturally, in an investigation you want to collect
everything, but some data will exist longer than others, and you cannot possibly collect all of it
once. As an example, the OOV in an investigation may be RAM, hard drive data, CDs/DVDs, and
printouts.
Order of volatility: Capture system images as a snapshot of what exists, look at network traffic and
logs, capture any relevant video/screenshots/hashes, record time offset on the systems, talk to
witnesses, and track total man-hours and expenses associated with the investigation.
References:
Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex,
Indianapolis, 2014, p. 453

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