1. Theory Fundamentals
A section of Computer Science, 9608
Listing 10 of 304 questions
Parity bits can be used to verify data. The following binary number is transmitted using even parity. Add the missing parity bit. Parity bit In the following parity block, the first column contains the parity bits, and the last row contains the parity byte. A device transmits the data using even parity. Circle the error in the data transmitted. Parity bit Data Parity byte Explain how you identified the error. The data received can contain errors that are not detected using parity bits. Explain how this can happen. Parity is not the only method to verify the data has been sent correctly. Name and describe one other method of data verification during data transfer. Name Description
9608_s18_qp_11
THEORY
2018
Paper 1, Variant 1
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Parity bits can be used to verify data. The following binary number is transmitted using odd parity. Add the missing parity bit. Parity bit In the following data transmitted, the first column contains the parity bits, and the last row contains the parity byte. A device transmits the data using even parity. Circle the error in the data transmitted. Parity bit Data Parity byte The following table shows five error detection measures. Put one tick (3) in each row to indicate whether the measure is validation or verification. Measure Validation Verification Checksum Format check Range check Double entry Check digit
9608_s18_qp_12
THEORY
2018
Paper 1, Variant 2
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A computer is designed using the Von Neumann model. Describe the role of the Arithmetic and Logic Unit (ALU) and Control Unit (CU) in the Von Neumann model. ALU CU Describe the role of the Status Register and Program Counter (PC). Status Register PC H is a register. The current contents of H are: The current contents of register H represent an unsigned binary integer. Convert the value in register H into denary. Convert the value in register H into hexadecimal. The current contents of register H represent a two’s complement binary integer. Convert the value in register H into denary. State why register H does not currently contain a Binary Coded Decimal (BCD).
9608_s18_qp_13
THEORY
2018
Paper 1, Variant 3
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Parity bits can be used to verify data. The following binary number is transmitted using odd parity. Add the missing parity bit. Parity bit In the following parity block, the first column contains the parity bits, and the last row contains the parity byte. A device transmits the data using even parity. Circle the error in the data being transmitted. Parity bit Data Parity byte Four error detection measures are shown. Draw one line from each error detection measure to indicate whether it is verification or validation. Verification Validation Type check Proof reading Check digit Checksum Error detection measure
9608_s18_qp_13
THEORY
2018
Paper 1, Variant 3
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Questions Discovered
304