Posted in: Interview Question And Answare
| Q.1.The main difference between TCP and UDP is |
|---|
| a.UDP is connection oriented where as TCP is datagram service b.TCP is an Internet protocol where as UDP is an ATM protocol c.UDP is a datagram where as TCP is a connection oriented service d.All of the above |
| Answer:c |
Q.2.What operates in the Data Link and the Network layer? |
| a. NIC b. Bridge c. Brouter d. Router |
| Answer: c |
Q.3. What is the name of the computer based EMMS that provides a common forum where users can check in at their convenience, post messages, actively exchange ideas and participate in ongoing discussions? |
| a. E-mail b. Bulletin board system (BBS) c. Teleconferencing d. Videoconferencing |
| Answer: b |
Q.4.Which of the following statement is incorrect? |
| a. The CCITT Recommendation X.25 specifies three layers of communication: physical, link and network b. The second layer of communication is the data-link layer c. Errors in the physical layer can be detected by the data link layer d. The fourth layer, in reference to the OSI model, is the session layer |
| Answer: d |
Q.5.Devices on one network can communicate with devices on another network via a |
| a. file server b. utility server c. printer server d. gateway |
| Answer: d |
Q.6. A hard copy would be prepared on a |
| a. typewriter terminal. b. line printer. c. plotter d. All of the above. |
| Answer: d |
Q.7. Which of the following device copies electrical signals from one Ethernet to another? |
| a. bridge b. repeater c. hub d. passive hub |
| Answer: b |
Q.8. Stephanie is in charge of a small network and wants to make it simple but secure. The users want to have full control over their data and still be able to share data with the rest of the office. The networking knowledge of the office staff is basic. Which network(s) would be the best for Stephanie to set up? |
| a. Peer-to-peer b. Master domain c. Server-based d.WAN |
| Answer: c |
Q.9.When UPC is used, the price of the item is located ? |
| a. on the item b. on the item and on the shelf c. in computer storage d. on the shelf and in computer storage |
| Answer: d |
Q.10. Error control is needed at the transport layer because of potential errors occurring _____. |
| a. from transmission line noise b. in routers c. from out-of-sequence delivery d. from packet losses |
| Answer: b |
Q.11. Which of the following is not a standard synchronous communication protocol? |
| a. SDLC b. SMTP c. SLIP d. PAS |
| Answer: d |
Q.12. The network layer, in reference to the OSI model, provide |
| a. data link procedures that provide for the exchange of data via frames that can be sent and received b. the interface between the X.25 network and packet mode device c. the virtual circuit interface to packet-switched service d. All of the above |
| Answer: c |
Q.13. In OSI network architecture, the routing is performed by: |
| a. network layer b. data link layer c. transport layer d. session layer |
| Answer: a |
Q.14. Which of the following communications lines is best suited to interactive processing applications? |
| a. narrowband channels b. simplex lines c. full-duplex lines d. mixed band channels |
| Answer: c |
Q.15. What is the first octet range for a class B IP address? |
| a. 128 - 255 b. 1 - 127 c. 192 - 223 d. 128 - 191 |
| Answer: d |
Q.16. If communication software can be called the "traffic cop" of a micro communication system, then what should the modem be called? |
| a. Park b. Bridge c. Interface d. Link |
| Answer: b |
Q.17. Which of the following specifies the network address and host address of the computer? |
| a. The IP address b. The TCP address c. The subnet mask d. controller |
| Answer: a |
Q.18. For connecting modem, a computer must be equipped with a port that conforms to the RS-232 standard of the Electronic Industries Association of America. What do the letters 'RS' stand for? |
| a. Recognised standard b. Random sequence c. Recommended standard d. Registered source |
| Answer: c |
Q.19. A network that requires human intervention of route signals is called a |
| a. bus network b. ring network c. star network d. T-switched network |
| Answer: d |
Q.20.What is the port number for POP3? |
| a. 110 b. 90 c. 80 d. 49 |
| Answer: a |
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| Q.1.What protocol is used between E-Mail servers? |
|---|
| a.FTP b.SMTP c.SNMP d.POP3 |
| Answer:b |
Q.2. If you configure the TCP/IP address and other TCP/IP parameters manually, you can always verify the configuration through which of the following? Select the best answer? |
| a. Network Properties dialog box b. Server Services dialog box c. DHCPINFO command-line utility d. Advanced Properties tab of TCP/ IP Info |
| Answer: a |
Q.3. In a PC to telephone hookup for long distance communication, modem is connected between the telephone line and |
| a. PC b. synchronous port c. crossover cable d. asynchronous port |
| Answer: d |
Q.4. Which of the following communications service provides message preparation and transmission facilities? |
| a. Teletex b. Teletext c. x400 d. Fax |
| Answer: a |
Q.5. Four bits are used for packet sequence numbering in a sliding window protocol used in a computer network. What is the maximum window size? |
| a. 4 b. 8 c. 15 d. 16 |
| Answer: c |
Q.6. In a synchronous modem, the receive equalizer is known as |
| a. adaptive equalizer. b. impairment equalizer. c. statistical equalizer. d. compromise equalizer. |
| Answer: a |
Q.7. Alex is required to provide information on how many people are using the network at any one time. Which network will enable him to do so? |
| a. Server-based b. Token-Ring c. Ethernet d. Star |
| Answer: a |
Q.8. Now-a-days computers all over the world can talk to each other. Which is one of the special accessories essential for this purpose? |
| a. Keyboard b. Modem c. Scanner d.Fax |
| Answer: b |
Q.9. To make possible the efficient on-line servicing of many teleprocessing system users on large computer systems, designers are developing? |
| a. communication systems b. multiprogramming systems c. virtual storage systems d. All of the above |
| Answer: d |
Q.10. Which of the following best describes the scopes on each DHCP server, in the absence of configuration problems with DHCP addresses, if you use multiple DHCP servers in your environment? |
| a. Unique to that subnet only b. For different subnets c. For no more than two subnets d. For no subnets |
| Answer: b |
Q.11. Which of the following provides a storage mechanism for incoming mail but does not allow a user to download messages selectively? |
| a. SMTP b. DHCP c. IMAP d. POP3 |
| Answer: d |
Q.12. A 4 KHz noiseless channel with one sample every 125 per sec, is used to transmit digital signals. Find the bit rate (bits per second) that are sent, if CCITT 2.048 Mbps encoding is used.? |
| a. 500 Kbps b. 32 Kbps c. 8 Kbps d. 64 Kbps. |
| Answer: d |
Q.13. A subdivition of main storage created by operational software is referred to as a: |
| a. compartment b. time-shared program c. divided core d. partition |
| Answer: d |
Q.14. On a class C network with a subnet mask of 192, how many subnets are available? |
| a. 254 b. 62 c. 2 d. 14 |
| Answer: c |
Q.15. How can you see the address of the DHCP server from which a client received its IP address? |
| a. By using Advanced Properties of TCP/IP b. By using IPCONFIG/ALL c. By using DHCPINFO d. By pinging DHCP |
| Answer: b |
Q.16. RS-232-G |
| a. is an interface between two data circuit terminating equipment as examplified by a local and remote modem b. is an interface standard between Data terminal Equipment and Data Circuit Terminating Equipment c. specifies only the mechanical characteristics of an interface by providing a 25-pin connector d. requires only 7 pin out of 25 in order to transmit digital data over public telephone lines |
| Answer: b |
Q.17. Error detection at a data link level is achieved by? |
| a. bit stuffing b. cyclic redundancy codes c. Hamming codes d. equalization |
| Answer: b |
Q.18. Which of the following items is not used in Local Area Networks (LANs)? |
| a. Computer b. Modem c. Printer d. Cable |
| Answer: b |
Q.19. The 32-bit internet address 10000000 00001010 00000010 00011110 will be written in dotted decimal notation as |
| a. 148.20.2.30 b. 164.100.9.61 c. 128.10.2.30 d. 210.20.2.64 |
| Answer: d |
Q.20.You have a class A network address 10.0.0.0 with 40 subnets, but are required to add 60 new subnets very soon. You would like to still allow for the largest possible number of host IDs per subnet. Which subnet mask should you assign? |
| a. 255.240.0.0 b. 255.248.0.0 c. 255.252.0.0 d. 255.254.0.0 |
| Answer: d |
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private void formTest_Click(object sender, EventArgs e)
{
if (CheckMdiClientDuplicates("Namespace01.FormTest", "FormTest") == true)
{
FormTest childForm = new FormTest();
childForm.MdiParent = this;
childForm.Show();
}
}
internal bool CheckMdiClientDuplicates(string WndCls,string fName)
{
Form[] mdichld = this.MdiChildren;
foreach (Form selfm in mdichld)
{
string str = selfm.Name;
if (str == fName)
{
selfm.WindowState = FormWindowState.Normal;
return false;
}
}
return true;
}
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Posted in: Windows Form Application
