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High Availability and Data Distribution

1.       What does meant of HA and Load balancing ?
2.       What are the features available in SQL Server for HA and LB ?
a.       HA- Log Shipping, Mirroring, Clustering, Database snapshot, Backup-Restore.
b.      Load Balancing-  Replication and Clustering
3.       What is RAID ? explain in brief .
4.       Explain with example where should we use Which Features of HA and Load Balancing ?
Log Shipping
5.       What is Log shipping ?
6.       Explain the Architecture and Functionality of Log shipping ?
7.       What are Primary, Target and Monitor Server ?
8.       What are the Jobs running in Log shipping ? Backup, Copy, Restore and Alert.
9.       Which jobs are running on which server in log shipping ?
10.   What are the Advantages of Log shipping in respect of other features of HA-LB.
11.   How to recover Database in case of failover of Primary Server goes down in log shipping scenario ?
12.   Does log shipping works in Bulk-Logged recovery ?
13.   Does Log shipping works in different version of SQL Server ?
14.   What is Mirroring?
15.   What the Architecture and Functions of Mirroring Scenario ?
16.   Explain the Architecture of Principal, Mirror and witness Server ?
17.   What are the modes and types of Mirroring ?
18.   What are the Advantage of Mirroring ?
19.   What is Synchronous and Asynchronous Mirroring ?
20.   What are differences between High Safety and High performance Mode ?
21.   How to configure mirroring Session ?
22.   What is Transaction Log Buffer ?
23.   What is Log Hardening ?
24.   What happened when witness goes down ? What to do in .
25.   What happened when mirror server goes down ? What to do in .
26.   What happened when principal goes down ? What to do in .
27.   What are differences between Log shipping and Mirroring ?
28.   How do you monitor Mirroring ?
29.   What is Endpoint ? What are the Endpoint and TCP Port used in Session ?
30.   What is Quorum ?
31.   Does Bulk Recovery support Mirroring ?
32.   Can we do mirroring on different version of SQL Server ?
33.   How to do manual failover in mirroring ?
34.   What is Replication ?
35.   What are the benefits and Features of Replication ?
36.   How do you plan replication ?
37.   What are the Architecture of Replication ?
a.       Publisher
b.      Distributor
c.       Subscriber
d.      Subscription Mode-Push and Pull
e.      Articles
f.        Replication Type- Transaction, Snapshot, Merged
38.   What is Publisher, Distributor and Subscriber ? Explain.
39.   What are subscription Models in Replication ?
40.   What are differences between Push and Pull Subscription ?
41.   What is Articles ?
42.   What are the Types of Replication in SQL Server ?
43.   What is Snapshot Replication ?
44.   What is Transactional Replication ?
45.   What is Merge Replication ?
46.   How does Snapshot Replication Works ?
47.   How does Transactional Replication Works ?
48.   What are Agents working in Replication ?
49.   Which jobs runs in Transactional Replication ?
50.   Which jobs are running in Snapshot Replication ?
51.   What are Replication Topology ?
52.   How to Add Article in Publisher ?
53.   How to check and manage sync from publisher & subscriber articles ?
54.   Where does changes store in Replication ?
55.   What is Peer-to-peer Replication ?
56.   Where does distributors run in push subscription and pull subscriptions ?
57.   How to monitor replication ?
58.   What is clustering
59.   What is Windows cluster ?
60.   What is NLB ?
61.   What is Failover Cluster ?
62.   What is Server Node ?
63.   What is Private storage ?
64.   What is Shared Disk Array ?
65.   What is Quorum Disk ?
66.   What is Heart Beat ?
67.   What is Looks Alive Check ?
68.   What is Failover ?
69.   What is Virtual Server ?
70.   What is MSDTC ?
71.   What is Possible and Preferred owner ?
72.   How many IP address required if you need to install sql on 4 node of cluster ?
73.   Do we need to configure MSDTC in 2008 Clustering . Explain ?
74.   How does the failover happens ?
75.   What checks are performed to ensure that another node is up ?
76.   What is AAG & Always On Group in Denali ?
77.   How to Perform Drain in Cluster ?

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