Verizon Placement Paper General - Other -
Section I ? Unix Programming1) works as a command interpretorA) Hardware B) Kernal C) Shell D) CPU2) The major no for a floppy disk device is A) 1 B) 3 C) 2 D) 43) chown A) Changes the mode of operation to kernel modeB) Creates a threadC) Changes the users and/or group ownership of each given fileD) Creates a child process4) liloA) Uninstalls the boot loaderB) Installs the boot loaderC) Is a login utilityD) Invokes a daemon to logoff5) netdevice A) Provides low level access to Linux network devicesB) Provides low level access to Linux storage devicesC) Provides an interface to communicate with graphic devicesD) None of the other option listed for this question6) The process which terminates before the parent process exits, is called as A) ZombieB) OrphanC) ChildD) None of the other option listed for this question7) Context switch means A) Kernel switches from executing one process to another.B) Process switches from kernel mode to user mode.C) Process switches from user mode to kernel mode.D) None of the other option listed for this question8) The following socket provides two way, sequenced, reliable and unduplicated flow of data with no record boundaries.A) Sequential packet socketB) Datagram socketC) Stream socketD) Raw socket9) Identify the point(s) that is not true w.r.t. signalsA) Signals are software generated interrupts that are sent to a process when an event happensB) Signal delivery is analogous to hardware interrupts in that a signal can be blocked from being delivered in the future.C) Most signals are synchronous by nature.D) Most signal cause termination of the receiving process if no action is taken by the process in response to the signal.10) Identify the point(s) that is true wrt SemaphoreA) Only one process at a time can update a semaphore.B) All the other options listed for this questionC) They are often used to monitor and control the availability of system resources such as shared memory segments.D) Is a process with exclusive use of a semaphore terminates abnormally and fails to undo the operation or free the semaphore, the semaphore stays locked in the state the process left it.RDBMS1) When a single entity is related to itself then the relationship is termed as A) ONE ?TO-ONEB) ONE-TO-MANYC) RECURSIVED) MANY-TO-MANY2) means allowing objects of different types to be considered as examples of higher level setA) AGGREGATIONB) SPECIALIZATIONC) GENERALIZATIOND) DECOMPOSITION3) The primary characteristic of a key field as that it must beA) A NAMEB) TEXTC) UNIQUED) ALL OF THE OTHER OPTION LISTED FOR THIS QUESTION4) What kind of relationship exist between customers and salespersons if each customer may have one or more salespersons, and each salesperson may have one or more customers?A) one-to-oneB) one to manyC) many to manyD) many to one5) The following is a valid SET operation.A) JoinB) InsertC) SelectD) Difference6) means allowing objects of different types to be considered as example of a higher level set.A) AggregationB) SpecializationC) GeneralizationD) Decomposition7) A relation R is said to be in the , if it is in BCNF and there are non-trivial multi valued dependencies.A) 1st NFB) 2nd NFC) 3rd NFD) 4th NF8) A occurs when a weak entity does not have a candidate key and its instances are indistinguishable without a relationship with another entity.A) Existence dependencyB) Identifier dependencyC) Referential dependencyD) None of the other option listed for this question9) is / are sample(s) of data model.A) RelationalB) RationalC) Entity- relationshipD) None of the other option listed for this question10) In hierarchical database,A) There is one to many relationshipB) A child may have more than one parentC) A parent may have more than one childD) There is no restriction on the number of parents a child may have or the number of children a parent may have11) The term ?inner join? refers to:A) Joins between two tables in the same schema.B) An equality join based on one column from each table.C) A table joined with itself.D) A Cartesian product join.12) Which type of join is used in this query?SELECT last_name ?Name?, hire_date ?Hire Date?, loc ?Location?FROM employee, departmentWHERE employee.deptno = department.deptno.A) Outer joinB) Self joinC) EquijoinD) Non-equijoin13) A sales database has two table ? SALESPERSON and CUSTOMERS as below:SALESPEOPLE------------------------------------------------------snum NUMBERsname VARCHAR2(10)CUSTOMER------------------------------------------------------snum NUMBERcname VARCHAR2(10)The management wants to know the mapping of salespersons to their customers without excluding those salespersons that are not currently assigned. What would be the most appropriate condition, which can be applied on the Query to accomplish the above task?A) salespeople.snum(+) = customers.snumB) salespeople.snum = customers.snum(+)C) salespeople.snum = customers.snumD) salespeople.snum(+) = customers.snum(+)14) join returns those rows from a table which have no direct match in the other table.A) Outer joinB) inner joinC) EquijoinD) Self join15) To produce a meaningful result set without any Cartesian products, what is the minimum number of conditions that should appear in the WHERE clause of a four table join? A) 1B) 4C) 2D) 8Further there were question from MATHS (in aptitude section), testing the working knowledge of WIN NT (how to change the page file size etc), then general terms related to computers like WORM, Trojan Horse etc.
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