True/False
Indicate whether the
statement is true or false.
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1.
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In a firewall, proxy servers act as a go-between from computers on an internal
network and the Internet.
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2.
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Client/server networks are said to be decentralized.
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3.
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MAC addresses and IP addresses are the same thing.
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4.
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A node can NOT be a communications device, such as a modem.
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5.
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Repeaters are devices that are installed on long cable runs to amplify the
signal.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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6.
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Which type of network is NOT highly scalable?
a. | peer-to-peer | c. | Ethernet | b. | client/server | d. | intranet |
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7.
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The geographical area for a LAN is most likely to be a _____.
a. | planet | c. | city | b. | nation | d. | building |
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8.
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Which of the following is NOT a component of a client/server
network?
a. | transmission media | c. | network topology | b. | server | d. | computer
manufacturer |
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9.
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In a star topology, CSMA/CD is a technique for _____.
a. | avoiding and responding to data collisions | c. | routing data packets to the correct
destination | b. | encrypting messages before network transmission | d. | configuring network
topologies |
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10.
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The type of cable with the lowest installation cost is _____.
a. | 802.11 | c. | coaxial | b. | fiber-optic | d. | twisted pair |
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11.
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_____ are designed to send information between two networks.
a. | Hubs | c. | Repeaters | b. | Routers | d. | Switches |
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12.
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A firewall ensures that incoming data came from a valid source via technique
known as _____.
a. | access privileging | c. | authentication | b. | carrier sensing | d. | packet
screening |
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13.
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A _____ topology is the most widely deployed client/server network layout in
businesses today.
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14.
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Which of the following cable types has the highest run length and the highest
installation cost?
a. | ThickNet | c. | fiber-optic | b. | ThinNet | d. | twisted pair |
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15.
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Which of the following does NOT perform its functions within a single
network?
a. | router | c. | hub | b. | switch | d. | repeater |
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16.
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An example of a UTP cable is _____.
a. | Cat 6 | c. | coaxial | b. | RJ-45 | d. | 802.11 |
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17.
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Denial of Service (DoS) is _____.
a. | an act of bombarding a server with high volumes of false requests | c. | a firewall
technique for blocking access to certain logical ports | b. | the malicious destruction of data by accessing
the host’s FAT table | d. | a policy of withholding service from users who abuse the
Internet |
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18.
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Which of the following is NOT a benefit of networks?
a. | allow users to share printers | c. | allow users to transfer files
easily | b. | allow users to share an Internet connection | d. | allow users to share
monitors |
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19.
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Viruses that change their own code (or periodically rewrite themselves) to avoid
detection are called _____.
a. | multipartite viruses | c. | polymorphic viruses | b. | encryption viruses | d. | stealth viruses |
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20.
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The best defense against viruses is to _____.
a. | install antivirus software | c. | install a
firewall | b. | install spyware detector software | d. | install both antivirus software and a
firewall |
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21.
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Computer users who gain access to other companies’ or people’s
computer systems with the intent to destroy information or for illegal gain are known as
_____.
a. | black-hat hackers | c. | computer forensics experts | b. | Trojan
horses | d. | wildcat
hackers |
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22.
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Dynamic addressing makes it more difficult for hackers to find likely victims
because _____.
a. | the ISP hides the IP addresses for computers on their network | c. | the IP address is
protected by a firewall | b. | the IP address changes each time a user logs on
to their ISP | d. | the ISP
assigns counterfeit IP addresses |
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23.
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Which of the following is the most complex operating system to configure for a
home network?
a. | Mac OS X | c. | Linux | b. | Windows XP | d. | Windows ME |
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24.
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_____ services, such as MySpace and Facebook, have you list personal information
about yourself and encourage you to list connections to your friends.
a. | Social networking | c. | Grid computing | b. | Switch chaining | d. | MIMO |
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25.
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_____ computing is an efficient way of effectively linking millions of computers
to perform complex calculations during lulls in their process cycles.
a. | Remote | c. | Grid | b. | Automated | d. | Functional |
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