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試験科目：CompTIA IT Fundamentals
最近更新時間：2015-06-25
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試験科目：CompTIA Network+ certification
最近更新時間：2015-06-25
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NO.1 Which of the following are Internet standard protocols for email retrieval? Each correct
answer represents a complete solution. Choose two.
A. SNMP
B. POP3
C. SMTP
D. IMAP4
Answer: B,D
CompTIA FC0-U51 FC0-U51勉強方法 FC0-U51 vue
Explanation:
IMAP4 and POP3 protocols are Internet standard protocols for email retrieval. Internet Message
Access Protocol 4 (IMAP4) is an e-mail message retrieval protocol that allows email clients to retrieve
e-mail messages from e-mail servers. Post Office Protocol version 3 (POP3) is a protocol used to
retrieve e-mails from a mail server. It is designed to work with other applications that provide the
ability to send e-mails. POP3 is mostly supported by the commercially available mail servers. It does
not support retrieval of encrypted emails. POP3 uses port 110. Answer option A is incorrect. Simple
Network Management Protocol (SNMP) is a part of the TCP/IP protocol suite, which allows users to
manage the network. SNMP is used to keep track of what is being used on the network and how the
object is behaving. Answer option C is incorrect. Simple Mail Transfer Protocol (SMTP) is a protocol
for sending e-mail messages between servers. E-mailing systems use this protocol to send mails over
the Internet. SMTP works on the application layer of the TCP/IP or OSI reference model. The SMTP
client typically initiates a Transmission Control Protocol (TCP) connection to the SMTP server on the
well-known port designated for SMTP, port number 25. However, e-mail clients require POP or IMAP
to retrieve mails from e-mail servers.
Reference: "http://en.wikipedia.org/wiki/Internet_Message_Access_Protocol"
NO.2 Which of the following is a circuit board that is used to extend slots for expansion cards and
provides the ability to connect additional expansion cards to the computer?
A. Communication and Networking Riser (CNR)
B. Audio/modem riser
C. Riser card
D. Secure Digital (SD) card
Answer: C
CompTIAディレクトリ同期 FC0-U51資格トレーニング FC0-U51口コミ FC0-U51 FC0-U51
Explanation:
Riser card is a circuit board that is used to extend slots for expansion cards and provides the ability to
connect additional expansion cards to the computer. These cards are used with LPX motherboards.
With the introduction of ATX motherboards, riser cards are rarely used. In ATX motherboards, the
expansion cards connect directly to the computer motherboard instead of using riser cards. Answer
option B is incorrect. The audio/modem riser (AMR), also known as an AMR slot, is an expansion slot.
It is found on the motherboards of some Pentium III, Pentium 4, and Athlon personal computers. It
was designed by Intel to interface with chipsets and provide analog functionality, such as sound cards
and modems, on an expansion card. It has two rows of 23 pins each, making a total of 46 pins.
Answer option A is incorrect. Communication and Networking Riser (CNR) is a hardware device
developed by Intel. It plugs into the motherboard and holds chips for the functioning of devices such
as modems and audio devices. It supports V.90 analog modem, multichannel audio, phone-line-based
networking, and 10/100 Ethernet-based networking. CNR also minimizes electrical noise interference
through the physical separation of noise-sensitive elements from the motherboard's communication
systems. Answer option D is incorrect. Secure Digital (SD) card is a non-volatile memory card format
used in portable devices such as mobile phones, digital cameras, and handheld computers. SD cards
are based on the older MultiMediaCard (MMC) format, but they are a little thicker than MMC cards.
Generally an SD card offers a write-protect switch on its side. SD cards generally measure 32 mm x 24
mm x 2.1 mm, but they can be as thin as 1.4 mm. The devices that have SD card slots can use the
thinner MMC cards, but the standard SD cards will not fit into the thinner MMC slots. Some SD cards
are also available with a USB connector. SD card readers allow SD cards to be accessed via many
connectivity ports such as USB, FireWire, and the common parallel port.
Reference: "http://en.wikipedia.org/wiki/Riser_card"
NO.3 Which of the following statements are true about Universal Serial Bus (USB) ?
Each correct Answer represents a complete solution. Choose two.
A. USB supports hot plugging.
B. You can connect up to 127 peripheral devices to a single USB port.
C. You can connect up to 16 peripheral devices to a single USB port.
D. USB does not support Plug n Play installation.
Answer: A,B
CompTIA FC0-U51実際試験 FC0-U51受験期
Explanation:
Universal Serial Bus (USB) is a standard-based, external bus for a computer that brings the Plug and
Play capability of hardware devices. You can use a single USB port to connect up to 127 peripheral
devices, including speakers, CD-ROM drives, tape drives, keyboards, scanners, and cameras. USB
supports hot plugging, which means that you can install or remove a USB device while the computer
is running and the operating system automatically reconfigures itself accordingly. USB eliminates the
need to install internal cards into dedicated computer slots and reconfigure the system.
Reference: TechNet Technical Information CD, Topic: Appendix C - Hardware Support
NO.4 Which of the following indicates the subjects that can use them?
A. Access control list
B. Audit policy
C. Intrusion detection system
D. Single sign-on
Answer: A
CompTIA認定テキスト FC0-U51クラムメディア FC0-U51バージョン FC0-U51体験
Explanation:
Access control list indicates what subjects can use them. Access Control List (ACL) is the most
commonly used object in Cisco IOS. It filters packets or network traffic by controlling whether routed
packets are forwarded or blocked at the router's interfaces. According to the criteria specified within
the access lists, router determines whether the packets to be forwarded or dropped. Access control
list criteria could be the source or destination address of the traffic or other information. The types of
Cisco ACLs are Standard IP, Extended IP, IPX, Appletalk, etc. Answer option B is incorrect. Audit policy
defines the type of security events that will be logged for the servers of a domain or for an individual
computer. It does not indicate what subjects can use them. Answer option C is incorrect. An Intrusion
detection system (IDS) is software and/or hardware designed to detect unwanted attempts at
accessing, manipulating, and/or disabling of computer systems, mainly through a network, such as
the Internet. These attempts may take the form of attacks, as examples, by crackers, malware and/or
disgruntled employees. An IDS cannot directly detect attacks within properly encrypted traffic. An
intrusion detection system is used to detect several types of malicious behaviors that can
compromise the security and trust of a computer system. This includes network attacks against
vulnerable services, data driven attacks on applications, host based attacks such as privilege
escalation, unauthorized logins and access to sensitive files, and malware (viruses, trojan horses, and
worms). Answer option D is incorrect. Single sign-on is a process that enables a user with a domain
account to log on to a network once, using a password or smart card, and to gain access to multiple
computers in the domain without being prompted to log in again.
Reference: "http://en.wikipedia.org/wiki/Access_control_list"
NO.5 A customer has come to you wanting upgrade the video card in his laptop. What would you
recommend?
A. A PCMCIA card
B. A PCI Express card
C. Upgrade is not possible
D. An AGP Card
Answer: C
CompTIA科目対策 FC0-U51 FC0-U51入門 FC0-U51全真模擬試験 FC0-U51試験解答
Explanation:
Video cards in laptops are built into the motherboard and cannot be upgraded.
Answer option D is incorrect. An AGP card is an older type of video card for PC's.
What is AGP (Accelerated Graphics Port)? Hide
AGP is a high speed 32-bit bus designed for high performance graphics and video support.
It allows a video card to have direct access to a computer's RAM, which enables fast video
performance. AGP provides a bandwidth of up to 2,133 MB/second.
Answer options B and A are incorrect. Both are valid expansion cards for laptops, however
the laptop video card is not on an expansion slot.
Reference: http://www.tomshardware.com/forum/84345-33-video-card-laptop
NO.6 Which of the following is the default resolution for a VGA monitor?
A. 800x600-pixels
B. 1024x768-pixels
C. 320x200-pixels
D. 640x480-pixels
Answer: D
CompTIAディレクトリ同期 FC0-U51教育資料 FC0-U51予想試験 FC0-U51クエリ FC0-U51
Explanation:
Video Graphic Array (VGA) monitors have a default resolution of 640x480-pixels.
This is known as standard VGA resolution. Although computers typically use this resolution by
default, you can get better resolution using a specifically designed video driver for the installed
adapter. Answer options A, C, and B are incorrect. Super VGA monitors have a default resolution of
800x600- pixels. A VGA or SVGA connector is a 15-pin, three rows, female connector, on the back of a
PC used for connecting monitors.
Reference: TechNet, Contents: "Chapter 21 Multimedia"
NO.7 Which of the following programs can collect various types of personal information, such as
Internet surfing habits, and Web sites that the user has visited?
A. Malware
B. Spyware
C. Honeypot
D. Worm
Answer: B
CompTIA学習教材 FC0-U51攻略 FC0-U51試験情報 FC0-U51資格
Explanation:
Spyware is a program that takes partial control over a user's computer without user's permission.
Spyware programs can collect various types of personal information, such as Internet surfing habits,
and Web sites that the user has visited. Spyware programs can also interfere with the control of a
user's computer, such as installing additional software, redirecting Web browser activities, accessing
Web sites blindly, etc. Answer option C is incorrect. A honeypot is a term in computer terminology
used for a trap that is set to detect, deflect, or in some manner counteract attempts at unauthorized
use of information systems. Generally it consists of a computer, data, or a network site that appears
to be part of a network, but is actually isolated, and monitored, and which seems to contain
information or a resource of value to attackers. Answer option A is incorrect. The term malware
refers to malicious software, which is a broad class of malicious viruses, including spyware. Malware
is designed to infiltrate or damage a computer without the consent of the owner. Answer option D is
incorrect. A worm is a software program that uses computer networks and security holes to replicate
itself from one computer to another. It usually performs malicious actions, such as using the
resources of computers as well as shutting down computers. Reference.
"http.//en.wikipedia.org/wiki/Spyware"
NO.8 Which of the following protocols has recently been succeeded by Transport Layer Security (TLS)
protocol?
A. SNMP
B. IPX/SPX
C. HTTP
D. SSL
Answer: D
CompTIAアクセスリスト FC0-U51費用 FC0-U51関節 FC0-U51テスト問題集 試験番号 FC0-U51
Explanation:
The Secure Sockets Layer (SSL) is a commonly-used protocol for managing the security of a message
transmission on the Internet. SSL has recently been succeeded by Transport Layer Security (TLS),
which is based on SSL. SSL uses a program layer located between the Internet's Hypertext Transfer
Protocol (HTTP) and Transport Control Protocol (TCP) layers. SSL is included as part of both the
Microsoft and Netscape browsers and most Web server products. URLs that require an SSL
connection start with https: instead of http:. Transport Layer Security (TLS) is a cryptographic
protocol that provides security and data integrity for communications over networks such as the
Internet. Answer option B is incorrect. Internet Packet Exchange/Sequenced Packet Exchange
(IPX/SPX) is a protocol used by Novell NetWare clients to connect to NetWare server. IPX/SPX is a
routable protocol. It is supported by Microsoft operating systems. IPX/SPX can be used for both large
and small networks. The Internet does not use this protocol. Answer option A is incorrect. Simple
Network Management Protocol (SNMP) is a part of the TCP/IP protocol suite, which allows users to
manage the network. SNMP is used to keep track of what is being used on the network and how the
object is behaving. Answer option C is incorrect. Hypertext Transfer Protocol (HTTP) is a client/server
TCP/IP protocol used on the World Wide Web (WWW) to display Hypertext Markup Language (HTML)
pages. HTTP defines how messages are formatted and transmitted, and what actions Web servers
and browsers should take in response to various commands. For example, when a client application
or browser sends a request to the server using HTTP commands, the server responds with a message
containing the protocol version, success or failure code, server information, and body content,
depending on the request. HTTP uses TCP port 80 as the default port.
Reference: "http://www.webopedia.com/TERM/S/SSL.html"