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MCQOPTIONS
This section includes 1671 Mcqs, each offering curated multiple-choice questions to sharpen your Technical Programming knowledge and support exam preparation. Choose a topic below to get started.
| 1001. |
Which of these class must be used to send a datagram packets over a connection? |
| A. | InetAdress |
| B. | DatagramPacket |
| C. | DatagramSocket |
| D. | All of the mentioned |
| Answer» E. | |
| 1002. |
Which of these method of DatagramPacket is used to find the length of byte array? |
| A. | getnumber() |
| B. | length() |
| C. | Length() |
| D. | getLength() |
| Answer» E. | |
| 1003. |
Which of these method of DatagramPacket is used to obtain the byte array of data contained in a datagram? |
| A. | getData() |
| B. | getBytes() |
| C. | getArray() |
| D. | recieveBytes() |
| Answer» B. getBytes() | |
| 1004. |
Which of these method of DatagramPacket is used to find the port number? |
| A. | port() |
| B. | getPort() |
| C. | findPort() |
| D. | recievePort() |
| Answer» C. findPort() | |
| 1005. |
Which of these class is necessary to implement datagrams? |
| A. | DatagramPacket |
| B. | DatagramSocket |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 1006. |
Which of these is a bundle of information passed between machines? |
| A. | Mime |
| B. | Cache |
| C. | Datagrams |
| D. | DatagramSocket |
| Answer» D. DatagramSocket | |
| 1007. |
Which of these data member of HttpResponse class is used to store the response from a http server? |
| A. | status |
| B. | address |
| C. | statusResponse |
| D. | statusCode |
| Answer» E. | |
| 1008. |
Which of these methods is used to know the type of content used in the URL? |
| A. | ContentType() |
| B. | contentType() |
| C. | getContentType() |
| D. | GetContentType() |
| Answer» D. GetContentType() | |
| 1009. |
Which of these methods is used to know when was the URL last modified? |
| A. | LastModified() |
| B. | getLastModified() |
| C. | GetLastModified() |
| D. | getlastModified()() |
| Answer» C. GetLastModified() | |
| 1010. |
Which of these transfer protocol must be used so that URL can be accessed by URLConnection class object? |
| A. | http |
| B. | https |
| C. | Any Protocol can be used |
| D. | None of the mentioned |
| Answer» B. https | |
| 1011. |
Which of these is wrapper around everything associated with a reply from an http server? |
| A. | HTTP |
| B. | HttpResponse |
| C. | HttpRequest |
| D. | httpserver |
| Answer» C. HttpRequest | |
| 1012. |
Which of these class is used to access actual bits or content information of a URL? |
| A. | URL |
| B. | URLDecoder |
| C. | URLConnection |
| D. | All of the mentioned |
| Answer» E. | |
| 1013. |
Which of these methods is used to know the full URL of an URL object? |
| A. | fullHost() |
| B. | getHost() |
| C. | ExternalForm() |
| D. | toExternalForm() |
| Answer» E. | |
| 1014. |
Which of these methods is used to know host of an URL? |
| A. | host() |
| B. | getHost() |
| C. | GetHost() |
| D. | gethost() |
| Answer» C. GetHost() | |
| 1015. |
Which of these exception is thrown by URL class’s constructors? |
| A. | URLNotFound |
| B. | URLSourceNotFound |
| C. | MalformedURLException |
| D. | MalformedURLException |
| Answer» D. MalformedURLException | |
| 1016. |
What does URL stands for? |
| A. | Uniform Resource Locator |
| B. | Uniform Resource Latch |
| C. | Universal Resource Locator |
| D. | Universal Resource Latch |
| Answer» B. Uniform Resource Latch | |
| 1017. |
Which of these method is called when http daemon is acting like a normal web server? |
| A. | Handle() |
| B. | HandleGet() |
| C. | handleGet() |
| D. | Handleget() |
| Answer» D. Handleget() | |
| 1018. |
Which of these method is used to start a server thread? |
| A. | run() |
| B. | start() |
| C. | runThread() |
| D. | startThread() |
| Answer» B. start() | |
| 1019. |
Which of these method of httpd class is used to write UrlCacheEntry object into local disk? |
| A. | writeDiskCache() |
| B. | writetoDisk() |
| C. | writeCache() |
| D. | writeDiskEntry() |
| Answer» B. writetoDisk() | |
| 1020. |
Which of these variables stores the number of hits that are successfully served out of cache? |
| A. | hits |
| B. | hitstocache |
| C. | hits_to_cache |
| D. | hits.to.cache |
| Answer» E. | |
| 1021. |
Which of these method is used to find a URL from the cache of httpd? |
| A. | findfromCache() |
| B. | findFromCache() |
| C. | serveFromCache() |
| D. | getFromCache() |
| Answer» D. getFromCache() | |
| 1022. |
Which of these method of httpd class is used to get report on each hit to HTTP server? |
| A. | log() |
| B. | logEntry() |
| C. | logHttpd() |
| D. | logResponse() |
| Answer» C. logHttpd() | |
| 1023. |
Which of these methods of httpd class is used to read data from the stream? |
| A. | getDta() |
| B. | GetResponse() |
| C. | getStream() |
| D. | getRawRequest() |
| Answer» E. | |
| 1024. |
Which of these is an instance variable of class httpd? |
| A. | port |
| B. | cache |
| C. | log |
| D. | All of the mentioned |
| Answer» E. | |
| 1025. |
Which of these method of MimeHeader is used to return the string equivalent of the values stores on MimeHeader? |
| A. | string() |
| B. | toString() |
| C. | convertString() |
| D. | getString() |
| Answer» C. convertString() | |
| 1026. |
Which of these class is used for operating on request from the client to the server? |
| A. | http |
| B. | httpDecoder |
| C. | httpConnection |
| D. | httpd |
| Answer» E. | |
| 1027. |
Which of these methods is used to make raw MIME formatted string? |
| A. | parse() |
| B. | toString() |
| C. | getString() |
| D. | parseString() |
| Answer» B. toString() | |
| 1028. |
Which of these is a standard for communicating multimedia content over email? |
| A. | http |
| B. | https |
| C. | Mime |
| D. | httpd |
| Answer» D. httpd | |
| 1029. |
Which of these class is used to create servers that listen for either local or remote client programs? |
| A. | httpServer |
| B. | ServerSockets |
| C. | MimeHeader |
| D. | HttpResponse |
| Answer» C. MimeHeader | |
| 1030. |
Which of these interface abstractes the output of messages from httpd? |
| A. | LogMessage |
| B. | LogResponse |
| C. | Httpdserver |
| D. | httpdResponse |
| Answer» B. LogResponse | |
| 1031. |
What is the output of this program? import java.net.*; class networking { public static void main(String[] args) throws UnknownHostException { InetAddress obj1 = InetAddress.getByName("cisco.com"); System.out.print(obj1.getHostName()); } } |
| A. | cisco |
| B. | cisco.com |
| C. | www.cisco.com |
| D. | none of the mentioned |
| Answer» C. www.cisco.com | |
| 1032. |
What is the output of this program? import java.net.*; class networking { public static void main(String[] args) throws UnknownHostException { InetAddress obj1 = InetAddress.getByName("cisco.com"); InetAddress obj2 = InetAddress.getByName("sanfoundary.com"); boolean x = obj1.equals(obj2); System.out.print(x); } } |
| A. | 0 |
| B. | 1 |
| C. | True |
| D. | false |
| Answer» E. | |
| 1033. |
What is the output of this program? import java.net.*; class networking { public static void main(String[] args) throws UnknownHostException { InetAddress obj1 = InetAddress.getByName("sanfoundary.com"); InetAddress obj2 = InetAddress.getByName("sanfoundary.com"); boolean x = obj1.equals(obj2); System.out.print(x); } } |
| A. | 0 |
| B. | 1 |
| C. | True |
| D. | false |
| Answer» D. false | |
| 1034. |
Which of these class is used to encapsulate IP address and DNS? |
| A. | DatagramPacket |
| B. | URL |
| C. | InetAddress |
| D. | ContentHandler |
| Answer» D. ContentHandler | |
| 1035. |
Which of these is a full form of DNS? |
| A. | Data Network Service |
| B. | Data Name Service |
| C. | Domain Network Service |
| D. | Domain Name Service |
| Answer» E. | |
| 1036. |
How many bits are in a single IP address? |
| A. | 8 |
| B. | 16 |
| C. | 32 |
| D. | 64 |
| Answer» D. 64 | |
| 1037. |
How many ports of TCP/IP are reserved for specific protocols? |
| A. | 10 |
| B. | 1024 |
| C. | 2048 |
| D. | 512 |
| Answer» C. 2048 | |
| 1038. |
Which of these is a protocol for breaking and sending packets to an address across a network? |
| A. | TCP/IP |
| B. | DNS |
| C. | Socket |
| D. | Proxy Server |
| Answer» B. DNS | |
| 1039. |
Which of these package contains classes and interfaces for networking? |
| A. | java.io |
| B. | java.util |
| C. | java.net |
| D. | java.network |
| Answer» D. java.network | |
| 1040. |
What is the output of this program? import java.io.*; class streams { public static void main(String[] args) { try { FileOutputStream fos = new FileOutputStream("serial"); ObjectOutputStream oos = new ObjectOutputStream(fos); oos.writeFloat(3.5); oos.flush(); oos.close(); } catch(Exception e) { System.out.println("Serialization" + e); System.exit(0); } try { FileInputStream fis = new FileInputStream("serial"); ObjectInputStream ois = new ObjectInputStream(fis); System.out.println(ois.available()); } catch (Exception e) { System.out.print("deserialization"); System.exit(0); } } } |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 1041. |
What is the output of this program? import java.io.*; class streams { public static void main(String[] args) { try { FileOutputStream fos = new FileOutputStream("serial"); ObjectOutputStream oos = new ObjectOutputStream(fos); oos.writeFloat(3.5); oos.flush(); oos.close(); } catch(Exception e) { System.out.println("Serialization" + e); System.exit(0); } try { FileInputStream fis = new FileInputStream("serial"); ObjectInputStream ois = new ObjectInputStream(fis); ois.close(); System.out.println(ois.available()); } catch (Exception e) { System.out.print("deserialization"); System.exit(0); } } } |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 0 |
| Answer» E. | |
| 1042. |
What is the output of this program? import java.io.*; class serialization { public static void main(String[] args) { try { Myclass object1 = new Myclass("Hello", -7, 2.1e10); FileOutputStream fos = new FileOutputStream("serial"); ObjectOutputStream oos = new ObjectOutputStream(fos); oos.writeObject(object1); oos.flush(); oos.close(); } catch(Exception e) { System.out.println("Serialization" + e); System.exit(0); } try { int x; FileInputStream fis = new FileInputStream("serial"); ObjectInputStream ois = new ObjectInputStream(fis); x = ois.readInt(); ois.close(); System.out.println(x); } catch (Exception e) { System.out.print("deserialization"); System.exit(0); } } } class Myclass implements Serializable { String s; int i; double d; Myclass(String s, int i, double d) { this.d = d; this.i = i; this.s = s; } } |
| A. | -7 |
| B. | Hello |
| C. | 2.1E10 |
| D. | deserialization |
| Answer» E. | |
| 1043. |
What is the output of this program? import java.io.*; class streams { public static void main(String[] args) { try { FileOutputStream fos = new FileOutputStream("serial"); ObjectOutputStream oos = new ObjectOutputStream(fos); oos.writeInt(5); oos.flush(); oos.close(); } catch(Exception e) { System.out.println("Serialization" + e); System.exit(0); } try { int z; FileInputStream fis = new FileInputStream("serial"); ObjectInputStream ois = new ObjectInputStream(fis); z = ois.readInt(); ois.close(); System.out.println(x); } catch (Exception e) { System.out.print("deserialization"); System.exit(0); } } } |
| A. | 5 |
| B. | void |
| C. | serialization |
| D. | deserialization |
| Answer» B. void | |
| 1044. |
Which of these is a method of ObjectInput interface used to deserialize an object from a stream? |
| A. | int read() |
| B. | void close() |
| C. | Object readObject() |
| D. | Object WriteObject() |
| Answer» D. Object WriteObject() | |
| 1045. |
Which of these interface extends DataInput interface? |
| A. | Serializable |
| B. | Externalization |
| C. | ObjectOutput |
| D. | ObjectInput |
| Answer» E. | |
| 1046. |
Which of these process occur automatically by java run time system? |
| A. | Serialization |
| B. | Memory allocation |
| C. | Deserialization |
| D. | All of the mentioned |
| Answer» E. | |
| 1047. |
Which of these is a process of extracting/removing the state of an object from a stream? |
| A. | Serialization |
| B. | Externalization |
| C. | File Filtering |
| D. | Deserialization |
| Answer» E. | |
| 1048. |
Serializaed object can be transferred via network. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1049. |
Which of the following methods is not used while Serialization and DeSerialization? |
| A. | readObject() |
| B. | readExternal() |
| C. | readWriteObject() |
| D. | writeObject() |
| Answer» D. writeObject() | |
| 1050. |
Which of the following methods is used to avoid serialization of new class whose super class already implements Serialization? |
| A. | writeObject() |
| B. | readWriteObject() |
| C. | writeReadObject() |
| D. | unSerializaedObject() |
| Answer» B. readWriteObject() | |