COMPUTER NETWORKING QUIZ

If you wanted to deny all Telnet connections to only network 192.168.10.0, which command could you use?

access-list 100 deny tcp 192.168.10.0 255.255.255.0 eq telnet

access-list 100 deny tcp any 192.168.10.0 0.0.0.255 eq 23

access-list 100 deny 192.168.10.0 0.0.0.255 any eq 23

access-list 100 deny tcp 192.168.10.0 0.255.255.255 eq telnet

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You have been contracted to install a windows NT network in an office that is located in a strip mall. The office is located next to the power plant of the building, so a UPS (uninterruptible power supply) has already been installed. What type of cable should you use for the network cabling? Choose the best answer.

TI

PSTN

STP

Fiber-optic

UTP

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Which of the following is true when describing a multicast address?

These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.

Packets addressed to a unicast address are delivered to a single interface.

Identifies multiple interfaces and is only delivered to one address. This address can also be called one-to-one-of-many.

Packets are delivered to all interfaces identified by the address. This is also called a one-to-many address.

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Which of the following describes an industry-wide standard suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer 3 Network layer of the OSI model?

HDLC

IPSec

Cable

VPN

xDSL

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If you wanted to deny FTP access from network 200.200.10.0 to network 200.199.11.0 but allow everything else, which of the following command strings is valid?

access-list 1 deny ftp 200.200.10.0 200.199.11.0 any any

access-list 100 deny tcp 200.200.10.0 0.0.0.255 200.199.11.0 0.0.0.255 eq ftp

access-list 110 deny 200.200.10.0 to network 200.199.11.0 eq ftpaccess-list 111 permit ip any 0.0.0.0 255.255.255.255

access-list 198 deny tcp 200.200.10.0 0.0.0.255 200.199.11.0 0.0.0.255 eq ftpaccess-list 198 permit ip any 0.0.0.0 255.255.255.255

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Communication between computers is almost always

series parallel

direct

None of these

parallel

serial

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FDDI is a

star network

ring network

None of these

bus based network

mesh network

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What operates in the Data Link and the Network layer?

Bridge

Router

None of these

Brouter

NIC

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An example of digital, rather than analog, communication is

WATS

DDD

DDT

None of these

DDS

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RS-449/442-A/423-A is

the ratio of the number of data units in error to the total number of data units

None of these

a check bit appended to an array of binary digits to make the sum of the all the binary digits

a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression the resulting expression will not conform to the rules of construction and

a set of physical layer standards developed by EIA and intended to replace RS-232-

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