Computer Networks

121. A UTP cable contains ____________ twisted pairs

1. 2 to 240
2. 2 to 4200
3. 2 to 2400
4. None of these

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122. A VC is a virtual channel composed of

1. Frames
2. Cells
3. Relay
4. Protocol

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123. A X.25 packet make up the ____________ of an HDLC frame

1. Frame field
2. Data field
3. Information field
4. Both b and c are same

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124. A X.25 protocol use

1. Store and forward method
2. Stop and wait method
3. Store and stop method
4. None of these

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125. According to RFC 1122 the TCP/IP consists of ____________

1. 2 layers
2. 3 layers
3. 4 layers
4. 5 layers

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126. Address of source and destination in SMDS both consists of 4 bit code followed by a telephone no of max.

1. 12 decimal digits
2. 16 decimal digits
3. 15 decimal digits
4. 20 decimal digits

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127. Addressing in SMDS has provision for

1. Group addressing
2. Security features
3. Both a & b
4. None of these

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128. ADSL means

1. Analogs Digital Subscriber Lines
2. Asymmetric Digital Subscriber Lines
3. Assistants Digital Subscriber Lines
4. Asymmetric Digital Subscriber language

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129. Advantages of cell relay are

1. High-speed transmission
2. Multiplexing transmission
3. Both a & b
4. None of these

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130. Advantages of ISDN internetworking are

1. Quality
2. Economy
3. Availability
4. All of these

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