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9 Cards in this Set

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True or False:

The IPX is a universal standard for inter-LAN communication.
FALSE


The Internetwork Packet Exchange (IPX) is Novell's original network layer protocol. Being proprietary to Novell means it is not a universal standard. Hence the statement is false making the choice B correct.
Segmentation of a data stream happens at which layer of the OSI model?

a: Physical
b: Data Link
c: Network
d: Transport
TRANSPORT


Segmenting data is the responsibility of the transport layer and not of physical, data link or network layers. Hence choice D is correct.
MAC addresses are the feature of ______________layer.


a: logical Link Control Layer
b. Data Link Layer
c. Physical Layer
d. None of the Above
MAC addresses, also called hardware addresses, are used to uniquely identify hosts on a local network, by the Data link Layer. Hence choice B is correct.
Bridges are software based where as switches are ______ based.

a. RISC

b. CISC

c. ASIC

d. None of the Above
Bridges are data link layer devices that are software based where as the Switches use the ASIC switching hardware to achieve the same results of bridges but with more speed and reliability. Hence choice C is correct.
Which of the following is/are true about windowing in TCP/IP?

a. For a window size of 3 the ack4 signal says send the 4th packet.

b. For a window size of 3 the acknowledgement is always ack3 to notify THAT the 3 packets were received.

c. For a window size of three, the packets will be sent in three different routes and acknowledgment is expected for each.

d. None of the above
Correct answer: a

Explanation:

Windowing is a flow-control scheme in which the source device requires an acknowledgment from the destination after a certain number of packets have been transmitted. With a window size of 3, the source requires an acknowledgment after sending three packets, or for whichever packet was received and not lost. Acknowledgment is always number of packets received +1 to indicate the next packet that needs to be sent. Hence choice A is correct and choices B, C and D are incorrect.
MAC is to Ethernet what ________is to Frame Relay.

a. DLCI

b. LCI

c. PVC

d. None of the Above
Correct answer: a

Explanation:

MAC addresses are Data Link layer identities of an Ethernet Card whereas DLCI are data link layer connection identifiers for the Frame Relay. Hence choice A is correct and choices B, C and D are incorrect.
Which of the following is a digital-interface device used to connect a router to a digital circuit like a T1?

a. A channel service unit/digital service unit (CSU/DSU)

b. A DTE

c. An Ethernet card

d. None of the above
Correct answer: a

Explanation:

A channel service unit/digital service unit (CSU/DSU) is a digital-interface device used to connect a router to a digital circuit like a T1. Hence choice A is correct.
Which is a device used to connect ISDN Basic Rate Interface (BRI) connections to other interfaces, such as EIA/TIA-232 on a router?

a. ISDN power adapter

b. ISDN terminal adapter

c. RJ-11 cable

d. None of the Above
Correct answer: b

Explanation:

ISDN terminal adapter is the device used to connect ISDN Basic Rate Interface (BRI) connections to other interfaces. ISDN power adapter is used to provide power to the ISDN circuit device while RJ-11 cable is used for telephone connections. Hence choice B is correct and choices A, C and D are incorrect.
The section of the carrier's network that is shared is often referred to as a WAN.

a. True

b. False
Correct answer: b

Explanation:

The section of the carrier's network that is shared is often referred to as a cloud. Hence the statement is false and choice B correct.