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Ace Test Series | DBMS | B+ Trees
Consider the following description: To construct the B+ tree use the following values. Consider the database block size as 512 bytes, block pointer as 6 bytes, record pointer as 7 bytes and search key value as 9 bytes. What will be the number of data entries possible in level 2 of the B+ tree, if fill factor of the node is 0.8? 17,954 16,954 18,954 19,954
asked
in
Databases
Sep 6, 2023
373
views
ace-test-series
databases
b-tree
1
vote
2
answers
2
Ace Test Series | COA | Addressing
A system support zero address, one address & two address instructions. Let 16-bit instruction is stored in 128-word memory. Identify the correct among the following. (A) 16K zero address, 128-one address, 2-two address instructions (B) 256 K ... -zero address instructions (C) 28 K zero address, 2-two address, 32-one address instructions (D) None of the above
asked
in
CO and Architecture
Sep 5, 2023
362
views
co-and-architecture
ace-test-series
instruction-format
0
votes
1
answer
3
Ace Test Series | Operating System | Paging
A machine supports a 48 bit virtual address and 32 bit physical address. Pages are 8KB. If the page table entry contains besides other information, one V/I bit, 1R, 1M and 2 bits for page protection. What is the page table size in bytes? 86 MB 128 MB 96 MB 512 MB
asked
in
Operating System
Sep 4, 2023
304
views
operating-system
ace-test-series
paging
0
votes
1
answer
4
Ace Test Series | Star Topology
Consider the star topology network where terminals are attached by a dedicated pair (one input and one output) of lines to a hub. The distance from each terminal to the hub is 'd' meters. Assume the packet size is 1250 ... allowed to transmit an unlimited number of packets/token. 2500 packets/token 25000 packets/token 250000 packets/token 25 packets/token
asked
in
Computer Networks
Jul 11, 2023
257
views
computer-networks
ace-test-series
0
votes
1
answer
5
Ace Test Series | Latency
Consider the star topology 100 Mbps network where 125 terminals are attached by a dedicated pair (one input and one output) of lines to a hub. The distance from each terminal to the hub is 100 meters. Assume eight bit latency per station and velocity of propagation is 2.5 X ${{10^8}}$ m/sec. ... ${{10^{-6}}}$ s 1.10 X ${{10^{-6}}}$ s None of the above
asked
in
Computer Networks
Jul 11, 2023
253
views
computer-networks
ace-test-series
0
votes
2
answers
6
Ace Test Series | Operating System | Demand paging
On a system using demand paging, it takes 200 ns to satisfy a memory request if the page is in memory. If the page is not in memory, the request takes 7 ms if a free frame is available or the page to be replaces is not ... of the time the page to be replaced has been modified? 600.19 micro seconds 590.19 micro seconds 790.19 micro seconds none
asked
in
Operating System
Jul 1, 2023
427
views
operating-system
demand-paging
ace-test-series
page-fault
0
votes
1
answer
7
Ace Test Series | Operating System | Demand Paging
On a system using demand - paged memory, it takes 120 ns to satisfy a memory request if the page is in memory. If the page is not in memory, the request takes 5 ms. What would the page fault rate need to be to achieve an effective access time of 1 us? 25% 30% 18% 20%
asked
in
Operating System
Jul 1, 2023
506
views
operating-system
demand-paging
ace-test-series
0
votes
1
answer
8
Ace Test Series | Operating System | Scheduling
Given a system using Round Robin scheduling, assuming it can perform a context- switch in zero time. Each process is allowed to run only one instruction before the next instruction is allocated to the CPU. The ready queue always contains n-processes. If ... -processing environment, how long will it take to execute on this system? n+t n*t n/t (n^2)t
asked
in
Operating System
Jul 1, 2023
345
views
operating-system
ace-test-series
round-robin-scheduling
1
vote
1
answer
9
Ace Test Series | DBMS
In multiple Granularity locking protocol at a particular node transaction T1 is holding SIX LOCK. When transaction T2 is also requesting a lock, at that node which other lock is allowed. I S I X S SIX X
asked
in
Databases
Jun 16, 2023
339
views
ace-test-series
databases
0
votes
1
answer
10
Ace Test Series | DBMS
A schedule S is having 3 transactions and each transaction is having two different data items and a blind 'Write A' statement is in all the three transactions.With the above information can you say whether the schedule is ... how many equivalent serial schedules are there serializable and it is equivalent to only two serial schedule detailed schedule is needed
asked
in
Databases
Jun 16, 2023
319
views
ace-test-series
databases
serializability
0
votes
1
answer
11
Ace Test Series | Computer Organistaion
A pipelined processor with a separate instruction & data cache has 5- stages, the cycle time 30 nano sec. It can start a new instruction on every cycle when there were no hazards. It is used with copy- back data cache with a block size of one - ... store which only result hazards. What is the throughout of CPU. a) 31 MIPS b) 24 MIPS c) 48 MIPS d) 10 MIPS
asked
in
CO and Architecture
Jun 12, 2023
326
views
ace-test-series
computer-architecture
pipelining
throughput
0
votes
0
answers
12
Ace test series
What is the smallest and largest number of entries for 2-3 BTree (B2-3 Tree) of height 8 (i.e., 8 levels) ? 255 and 6560 127 and 2186 6561 and 255 255 and 2186
asked
in
DS
Jun 11, 2023
435
views
ace-test-series
data-structures
binary-tree
0
votes
1
answer
13
Ace Test Series
Consider six files: F1, F2, F3, F4, F5, F6 with corresponding sizes 100, 200, 70, 40, 250 and 50 respectively. the files are to be stored on a sequential device in such a way that as to optimize access time. In what order should the files be stored ?? A) ... approximate average access time of a record from one of the six files on the sequential device?? A) 131 B) 198 C) 286 D) 433
asked
in
Operating System
Apr 12, 2023
358
views
ace-test-series
operating-system
file-organization
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