MCQOPTIONS
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MCQOPTIONS
This section includes 415 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A group of 2 - 1 routers are interconnected in a centralized binary tree, with router at each tree node. Router I communicate with router J by sending a message to the root of the tree. The root then sends the message back down to J. Then find the mean router-router path length. |
| A. | 2 (m - 2) |
| B. | 2 (2 |
| C. | - 1) |
| D. | m - 1 |
| E. | (2m - l)/mJ |
| Answer» B. 2 (2 | |
| 2. |
When you connect to an online information service, you are asked to provide some kind of identification such as your name, an account number and a password. What is the name given to this brief dialogue between you and the information system? |
| A. | The data link layer handles the transfer of data between the ends of a physical link. |
| B. | All of the above |
| C. | None of the above |
| D. | Security procedure |
| Answer» E. | |
| 3. |
Which of the following statement is correct? |
| A. | TOTAL |
| B. | BPL |
| C. | Telenet |
| D. | None of the above |
| Answer» B. BPL | |
| 4. |
What is the standard protocol for network management features? |
| A. | SNA |
| B. | FTP |
| C. | SNMP |
| D. | SMS |
| Answer» D. SMS | |
| 5. |
What is the default subnet mask for a class B network? |
| A. | 127.0.01 |
| B. | 255.0.0.0 |
| C. | 255.255.0.0 |
| D. | 255.255.255.0 |
| Answer» D. 255.255.255.0 | |
| 6. |
Which of the following medium access control technique is used for bus/tree? |
| A. | token ring |
| B. | token bus |
| C. | CSMA |
| D. | MAC |
| Answer» C. CSMA | |
| 7. |
An anticipated result from multiprogramming operations is: |
| A. | reduced computer idle time |
| B. | the handling of more jobs |
| C. | better scheduling of work |
| D. | All of the above |
| Answer» E. | |
| 8. |
When a host knows its physical address but not its IP address, it can use _____. |
| A. | RARP |
| B. | ARP |
| C. | IGMP |
| D. | ICMP |
| Answer» B. ARP | |
| 9. |
You are working with a network that has the network ID 192.168.10.0. What subnet should you use that supports up to 12 hosts and a maximum number of subnets? |
| A. | 255.255.255.192 |
| B. | 255.255.255.224 |
| C. | 255.255.255. 240 |
| D. | 255.255.255.248 |
| Answer» D. 255.255.255.248 | |
| 10. |
Which of the following performs modulation and demodulation? |
| A. | fiber optic |
| B. | satellite |
| C. | coaxial cable |
| D. | modem |
| Answer» E. | |
| 11. |
The communication mode that supports two-way traffic but only one direction at a time is |
| A. | simplex |
| B. | duplex |
| C. | half duplex |
| D. | multiplex |
| Answer» D. multiplex | |
| 12. |
Which of the following best illustrates the default subnet mask for a class A,B, and C Network? |
| A. | 0.0.0.0, 0.0.0.1, 0.0.1.1 |
| B. | 255.255.255.0, 255.255.0.0, 255.0.0.0 |
| C. | 255.0.0.0, 255.255.0.0, 255.255.255.0 |
| D. | 255.255.0.0, 255.255.255.0, 255.255.255.255 |
| Answer» D. 255.255.0.0, 255.255.255.0, 255.255.255.255 | |
| 13. |
The data communication support should include, but is not restricted to |
| A. | file transfer and transaction processing |
| B. | file and database access |
| C. | terminal support, electronic mail and voice grams. |
| D. | All of the above |
| Answer» E. | |
| 14. |
HOSTS file entries are limited to how many characters? |
| A. | 8 |
| B. | 255 |
| C. | 500 |
| D. | Unlimited |
| Answer» C. 500 | |
| 15. |
What frequency range is used for FM radio transmission? |
| A. | Very Low Frequency : 3 kHz to 30. kHz |
| B. | Low Frequency : 30 kHz to 300 kHz |
| C. | High Frequency : 3 MHz to 30 MHz |
| D. | Very High Frequency : 30 MHz to 300 MHz |
| Answer» E. | |
| 16. |
When two computers communicate with each other, they send information back and forth. If they are separated by a reasonable distance, they can send and receive the information through a direct cable connection which is called a null-modem connection. Presently what is the maximum distance in metres permitted in this null-modem connection? |
| A. | 80 |
| B. | 100 |
| C. | 30 |
| D. | 150 |
| Answer» D. 150 | |
| 17. |
Brad 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 excellent. Which network(s) would be the best to set up? |
| A. | Peer-to-peer |
| B. | Master domain |
| C. | Server-based |
| D. | Ethernet |
| Answer» B. Master domain | |
| 18. |
Compared to analog signals, digital signals |
| A. | allow faster transmission |
| B. | are more accurate |
| C. | both (a) and (b) |
| D. | All of the above |
| Answer» D. All of the above | |
| 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» E. | |
| 20. |
Which of the following TCP/IP protocol is used for transferring files from one machine to another? |
| A. | RARP |
| B. | ARP |
| C. | TCP |
| D. | FTP |
| Answer» E. | |
| 21. |
ASK, PSK, FSK, and QAM are examples of _____ encoding. |
| A. | digital-to-digital |
| B. | digital-to-analog |
| C. | analog-to-analog |
| D. | analog-to-digital |
| Answer» C. analog-to-analog | |
| 22. |
Which of the following is the address of the router? |
| A. | The IP address |
| B. | The TCP address |
| C. | The subnet mask |
| D. | The default gateway |
| Answer» E. | |
| 23. |
In CRC the quotient at the sender |
| A. | becomes the dividend at the receiver |
| B. | becomes the divisor at the receiver |
| C. | is discarded |
| D. | is the remainder |
| Answer» D. is the remainder | |
| 24. |
You are working with a network that has the network ID 192.168.10.0 and require nine subsets for your company and the maximum number of hosts. What subnet mask should you use? |
| A. | 255.255.255.192 |
| B. | 255.255.255.224 |
| C. | 255.255.255.240 |
| D. | 255.255.255.248 |
| Answer» D. 255.255.255.248 | |
| 25. |
The standard suit of protocols used by the Internet, intranets, extranets, and some other networks. |
| A. | TCP/IP |
| B. | Protocol |
| C. | Open Systems |
| D. | Internetwork processor |
| Answer» B. Protocol | |
| 26. |
If a firm wanted to transmit data from 1,000 punched cards to a remote computer, they would use a(n) |
| A. | POS terminal |
| B. | data collection terminal |
| C. | batch processing terminal |
| D. | intelligent terminal |
| Answer» D. intelligent terminal | |
| 27. |
An example of digital, rather than analog, communication is |
| A. | DDD |
| B. | DDS |
| C. | WATS |
| D. | DDT |
| Answer» C. WATS | |
| 28. |
Identify the odd term amongst the following group: |
| A. | Coaxial cable |
| B. | Optical fibre |
| C. | Twisted pair wire |
| D. | Microwaves |
| Answer» E. | |
| 29. |
The CCITT Recommendation X.25 specifies three layers of communications: |
| A. | application, presentation and session |
| B. | Session, transport and network |
| C. | physical datalink and network |
| D. | datalink, network and transport |
| Answer» D. datalink, network and transport | |
| 30. |
Which of the following is a wrong example of network layer: |
| A. | Internet Protocol (IP) ARPANET |
| B. | X. 25 Packet Level Protocol (PLP) - ISO |
| C. | Source routing and Domain naming - Usenet |
| D. | X.25 level 2 - ISO |
| Answer» E. | |
| 31. |
UDP is: |
| A. | Not a part of the TCP/IP suite |
| B. | Connection oriented and unreliable |
| C. | Connection orientated and reliable |
| D. | Connectionless and unreliable |
| Answer» E. | |
| 32. |
Which command-line tool is included with every Microsoft TCP/IP client? |
| A. | DHCP |
| B. | WINS |
| C. | PING |
| D. | WINIPCFG |
| Answer» D. WINIPCFG | |
| 33. |
What is the usual number of bits transmitted simultaneously in parallel data transmission used by microcomputers? |
| A. | 16 |
| B. | 9 |
| C. | 8 |
| D. | 4 |
| Answer» C. 8 | |
| 34. |
The most important part of a multiple DHCP configurations is to make sure you don't have which of the following in the different scopes? Select the best answer. |
| A. | Duplicate addresses |
| B. | Duplicate pools |
| C. | Duplicate subnets |
| D. | Duplicate default gateways |
| Answer» B. Duplicate pools | |
| 35. |
The basic Ethernet design does not provide |
| A. | access control |
| B. | addressing |
| C. | automatic retransmission of a message |
| D. | multiple virtual networks |
| Answer» D. multiple virtual networks | |
| 36. |
In cyclic redundancy checking what is the CRC? |
| A. | the divisor |
| B. | the quotient |
| C. | the dividend |
| D. | the remainder |
| Answer» E. | |
| 37. |
An ROP would be attached to a |
| A. | simplex channel |
| B. | duplex channel |
| C. | half duplex channel |
| D. | full duplex channel |
| Answer» B. duplex channel | |
| 38. |
A network consists of eight NT servers. You are planning to move servers to different segments of your network, what utility should be used at each server to determine which server generates the most traffic? |
| A. | NBTSTAT |
| B. | NETSTAT.EXE |
| C. | Performance Monitor |
| D. | Network Monitor |
| Answer» E. | |
| 39. |
Typewriter terminals can print computer-generated data at a rate of |
| A. | 10 characters per second |
| B. | 120 characters per second |
| C. | 120 characters per minute |
| D. | 1200 characters per minute |
| Answer» C. 120 characters per minute | |
| 40. |
A global network of millions of business, government, educational, and research networks; computer systems; database; and end users. Select the best fit for answer: |
| A. | Internet works |
| B. | The Internet |
| C. | Internet revolution |
| D. | Internet technologies |
| Answer» C. Internet revolution | |
| 41. |
Which of the following signals is not standard RS - 232-C signal? |
| A. | VDR |
| B. | RTS |
| C. | CTS |
| D. | DSR |
| Answer» B. RTS | |
| 42. |
Which of the following device copies electrical signals from one Ethernet to another? |
| A. | bridge |
| B. | repeater |
| C. | hub |
| D. | passive hub |
| Answer» C. hub | |
| 43. |
What operates in the Data Link and the Network layer? |
| A. | NIC |
| B. | Bridge |
| C. | Brouter |
| D. | Router |
| Answer» D. Router | |
| 44. |
The channel in the data communication model can be |
| A. | postal mail service |
| B. | telephone lines |
| C. | radio signals |
| D. | All of the above |
| Answer» E. | |
| 45. |
A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. Differential PCM with 4 bit relative signal value is used. Then how many bits per second are actually sent? |
| A. | 32 Kbps |
| B. | 64 Kbps |
| C. | 8 Kbps |
| D. | 128 Kbps. |
| Answer» B. 64 Kbps | |
| 46. |
Baseband is |
| A. | transmission of signals without modulation |
| B. | a signal all of whose energy is contained within a finite frequency range |
| C. | the simultaneous transmission of data to a number of stations |
| D. | All of the above |
| Answer» B. a signal all of whose energy is contained within a finite frequency range | |
| 47. |
What is the port number for HTTP? |
| A. | 99 |
| B. | 86 |
| C. | 80 |
| D. | 23 |
| Answer» D. 23 | |
| 48. |
The EIA-232 interface has _____ pins. |
| A. | 20 |
| B. | 24 |
| C. | 25 |
| D. | 30 |
| Answer» D. 30 | |
| 49. |
On a class B network, how many subnets are available with a subnet mask of 248? |
| A. | 2 |
| B. | 6 |
| C. | 30 |
| D. | 62 |
| Answer» D. 62 | |
| 50. |
Communication between computers is almost always |
| A. | serial |
| B. | parallel |
| C. | series parallel |
| D. | direct |
| Answer» B. parallel | |