1. In fiber optics, the signal source is ___ waves.
A. light
B. radio
C. infrared
D. very low frequency
2. The ___ layer is responsible for node to node packet delivery.
A. session
B. network
C. physical
D. data link
3. The speed mismatch between the sender and the receiver is called ___.
A. error control
B. speed error
C. flow control
D. transmission control
4. FTP runs exclusively over ___.
A. HTTP
B. TCP
C. SMTP
D. HTML
5. BSC is developed by ___.
A. Motorola
B. IBM
C. Nokia
D. Toshiba
6. Which of the following primarily uses guided media?
A. cellular telephone system
B. local telephone system
C. satellite communications
D. radio broadcasting
7. When we talk about unguided media, usually we are referring to ___.
A. metallic wires
B. nonmetallic wires
C. the atmosphere
D. None of the above
8. This is the ability to increase system performance gradually as the workload grows just by adding processors.
A. multipliability
B. inheritance
C. scalability
D. vectorization
9. PSTN represents ___.
A. private switched transmission network
B. public switched telephone network
C. private switched telephone network
D. public switched transmission network
10. SMTP refers to ___.
A. Simple mail transfer protocol
B. Small mail transfer protocol
C. Simple mass transfer protocol
D. Small mail transfer protocol
11. Class A, Class B, and Class C together are referred to as ___addressing or primary address class if the IP.
A. classful
B. eventful
C. graded
D. ranked
Ans: a
12. ___ overcame the registered number issue by assigning each organization one network number from the IPv4 address space.
A. Tracking
B. Subnetting
C. Packeting
D. Switching
13. Equipment that controls the physical and electrical termination of the ISDN at the user’s premises is called ___.
A. NT1
B. NT2
C. NT3
D. NT4
14. A data channel contains ___.
A. control information
B. management information
C. miscellaneous functions
D. user data/information
15. QOS represents ___.
A. Quality of System
B. Quality of Service
C. Queue of System
D. Queue of Service
16. ISDN is an acronym for ___.
A. Information Services for Digital Networks
B. Internetwork System for Data Networks
C. Integrated Services Digital Networks
D. Integrated Signals Digital Network
17. Data rate depends on three factors
A. Bandwidth available
B. Level of the signals we use
C. Quality of the channel
D. All of the above
18. Which layer is not really a layer?
A. Host of the network
B. Network to host
C. Application to presentation
D. None
19. Reference point ___ is the specification for connecting NT1 with NT2.
A. R
B. S
C. T
D. U
20. The radio communication spectrum is divided into bands based on ___.
A. amplitude
B. frequency
C. cost and hardware
D. transmission medium
21. Which international agency is concerned with standards in science and technology?
A. ISO
B. OSI
C. EIA
D. ANSI
22. ___ blocks are identified using syntax similar to that of IPv4 addresses: a four-part dotted-decimal address, followed by a slash, then a number from 0 to 32: A)B)C)D/N.
A. IPv4 CICR
B. IPv4 MIDR
C. IPv4 CIMR
D. IPv4 CIDR
23. The term “e-mail” applies both to the Internet e-mail system based on the ___ and to ___ allowing users within one organization to e-mail each other.
A. FTP, Intranet Systems
B. SMTP, Intranet Systems
C. FTP, Internet Systems
D. SMTP, Internet Systems
24. Which agency created standards for telephone communications (V series) and for network interfaces and public networks (X series)?
A. ATT
B. ITU-T
C. ANSI
D. ISO
25. ___ CSMA is less greedy whereas ___ CSMA is selfish.
A. Non-persistent, 1-persistent
B. 1-persistent, p-persistent
C. p-persistent, 1-persistent
D. 1-persistent, non-persistent
26. The BRI is composed of ___.
A. two B channels
B. one H channel
C. one D channel
D. a and c
27. IP Packet is a ___ and ___ based model.
A. connectionless, network
B. connection, network
C. connectionless, datagram
D. connection, datagram
28. ___ are special-interest groups that quickly test, evaluate, and standardize new technologies.
A. Forums
B. Regulatory agencies
C. Standards organizations
D. All of the above
29. When the angle of refraction is ___ the angle of incidence, the light beam is moving from a denser to a less dense medium.
A. more than
B. less than
C. equal to
D. none of the above.
30. For downlinks, current design practice is to use a minimum elevation angle of about ___ degrees to ___ degrees depending on the frequency.
A. 45 , 90
B. 40, 60
C. 10, 35
D. 5, 20
31. The ALOHA network was created at the University of ___ in 1970 under the leadership of ___.
A. Hawaii, John Abramson
B. Texas, John Abramson
C. Texas, Norman Abramson
D. Hawaii, Norman Abramson
32. The term used to describe the way in which computers are connected to the network.
A. Logic
B. Technology
C. Topology
D. All of the above
33. FDM stands for
A. Fixed division multiplexing
B. First division multiplexing
C. Frequency division multiplexing
D. None
34. FDDI stands for
A.Fixed distributed data interface
B. First division data interface
C. Fiber distributed data interface
D. None
35. The ___ layer is responsible for resolving access to the shared media or resources.
A. physical
B. MAC sub layer
C. Network
D. Transport
36. Coding can be divided into
A. Block coding
B. Convolution coding
C. Both of the above
D. None of the above
37. Fiber-optic communication system uses.
A. Simplex transmission
B. half-duplex
C. full-duplex
D. None of the above
38. Complex routing strategies can be, and are, often used in systems such as ___, ___, or ___, which are sometimes used as underlying technologies to support IP networks.
A. MPLS, ATM, or Frame Relay
B. CTLNS, ATM, or Slot
C. ATM, PDTN, or Slot
D. LAN, ATM, or Frame Relay
39. The concept of connected computers sharing resources is called ___.
A. Internetworking
B. Intranetworking
C. Networking
D. None of the above
40. VPN stands for
A. Virtual Private Network
B. Visual private network
C. Virtual public network
D. Visual public network
41. IMP stands for
A. Internal message passing
B. Interface message passing
C. Internal message parsing
D. Interface message parsing
42. Process to process delivery of the entire message is done by
A. Physical layer
B. Transport layer
C. Session layer
D. Presentation layer
43. Dialog controller role is played by
A. Session layer
B. Application layer
C. Transport layer
D. Network layer
Ans: a
44. Syntax and semantics of the information exchanged between two systems is done by
A. Session layer
B. Application layer
C. Transport layer
D. Presentation layer
45. SDU stands for
A. Service data unit
B. Service digital unit
C. Session data unit
D. Session data unit
46. PDU stands for
A. Power data unit
B. Protocol digital unit
C. Presentation data unit
D. Protocol data unit
47. Transmission lines suffer from the major problem
A. Attenuation distortion
B. Delay distortion
C. Noise
D. All of the above
48. If the value of a signal changes over a very short span of time, its frequency is ___
A. Low
B. High
C. Average
D. Zero
49. CRC stands for
A. Cyclic redundancy codes
B. Code redundancy cycle
C. Critical redundancy cycle
D. None of the above
50. In ___ type of service, no connection is established beforehand or afterward.
A. acknowledged connectionless service
B. Unacknowledged connectionless service
C. acknowledged connection-oriented service
D. Unacknowledged connection-oriented service
51 Computer Network is
A. Collection of hardware components and computers
B. Interconnected by communication channels
C. Sharing of resources and information
D. All of the Above
52. Protocols are?
A. Agreements on how communication components and DTE's are to communicate
B. Logical communication channels for transferring data
C. Physical communication channels sued for transferring data
D. None of above
53. Two devices are in network if
A. a process in one device is able to exchange information with a process in another device
B. a process is running on both devices
C. PIDs of the processes running of different devices are same
D. none of the mentioned
54. what is a Firewall in Computer Network?
A. The physical boundary of Network
B. An operating System of Computer Network
C. A system designed to prevent unauthorized access
D. A web browsing Software
55. The IETF standards documents are called
A. RFC
B. RCF
C. ID
D. None of the mentioned
56. Which data communication method is used to transmit the data over a serial communication link?
A. Simplex
B. Half-duplex
C. Full duplex
D. All of above
57. Each IP packet must contain
A. Only Source address
B. Only Destination address
C. Source and Destination address
D. Source or Destination address
58. What is the minimum header size of an IP packet?
A. 16 bytes
B. 10 bytes
C. 20 bytes
D. 32 bytes
59. Routing tables of a router keeps track of
A. MAC Address Assignments
B. Port Assignments to network devices
C. Distribute IP address to network devices
D. Routes to use for forwarding data to its destination
60. Which of the following is not the External Security Threats?
A. Front-door Threats
B. Back-door Threats
C. Underground Threats
D. Denial of Service (DoS)
61. What is the IP Address range of APIPA?
A. 169.254.0.1 to 169.254.0.254
B. 169.254.0.1 to 169.254.0.255
C. 169.254.0.1 to 169.254.255.254
D. 169.254.0.1 to 169.254.255.255
62. Which of the following is not the possible ways of data exchange?
A. Simplex
B. Multiplex
C. Half-duplex
D. Full-duplex
63. The management of data flow between computers or devices or between nodes in a network is called
A. Flow control
B. Data Control
C. Data Management
D. Flow Management
64. What does the port number in a TCP connection specify?
A. It specifies the communication process on the two end systems
B. It specifies the quality of the data & connection
C. It specify the size of data
D. All of the above
65. What is the purpose of the PSH flag in the TCP header?
A. Typically used to indicate end of message
B. Typically used to indicate beginning of message
C. Typically used to push the message
D. Typically used to indicate stop the message
66. Which of the following protocol is/are defined in Transport layer?
A. FTP
B. TCP
C. UDP
D. B & C
67. The meaning of Straight-through Cable is
A. Four wire pairs connect to the same pin on each end
B. The cable Which Directly connects Computer to Computer
C. Four wire pairs not twisted with each other
D. The cable which is not twisted
68. What is the size of MAC Address?
A. 16-bits
B. 32-bits
C. 48-bits
D. 64-bits
69. Repeater operates in which layer of the OSI model?
A. Physical layer
B. Data link layer
C. Network layer
D. Transport layer
70. Which of the following layer of OSI model also called end-to-end layer?
A. Presentation layer
B. Network layer
C. Session layer
D. Transport layer
71. Router operates in which layer of OSI Reference Model?
A. Layer 1 (Physical Layer)
B. Layer 3 (Network Layer)
C. Layer 4 (Transport Layer)
D. Layer 7 (Application Layer)
72. ADSL is the abbreviation of
A. Asymmetric Dual Subscriber Line
B. Asymmetric Digital System Line
C. Asymmetric Dual System Line
D. Asymmetric Digital Subscriber Line
73. How many layers does OSI Reference Model has?
A. 4
B. 5
C. 6
D. 7
74 Bridge works in which layer of the OSI model?
A. Appliation layer
B. Transport layer
C. Network layer
D. Datalink layer
75. Why IP Protocol is considered as unreliable?
A. A packet may be lost
B. Packets may arrive out of order
C. Duplicate packets may be generated
D. All of the above
76. What is the benefit of the Networking?
A. File Sharing
B. Easier access to Resources
C. Easier Backups
D. All of the Above
77. Which of the following is not the Networking Devices?
A. Gateways
B. Linux
C. Routers
D. Firewalls
78. What is the maximum header size of an IP packet?
A. 32 bytes
B. 64 bytes
C. 30 bytes
D. 60 bytes
79. Which of the following is correct in VLSM?
A. Can have subnets of different sizes
B. Subnets must be in same size
C. No required of subnet
D. All of above
80. DHCP Server provides _____ to the client.
A. Protocol
B. IP Address
C. MAC Address
D. Network Address
81. What is the address size of IPv6 ?
A. 32 bit
B. 64 bit
C. 128 bit
D. 256 bit
82. What is the size of Network bits & Host bits of Class A of IP address?
A. Network bits 7, Host bits 24
B. Network bits 8, Host bits 24
C. Network bits 7, Host bits 23
D. Network bits 8, Host bits 23
83. What is the full form of RAID ?
A. Redundant Array of Independent Disks
B. Redundant Array of Important Disks
C. Random Access of Independent Disks
D. Random Access of Important Disks
84. What do you mean by broadcasting in Networking?
A. It means addressing a packet to all machine
B. It means addressing a packet to some machine
C. It means addressing a packet to a particular machine
D. It means addressing a packet to except a particular machine
85. What is the size of Source and Destination IP address in IP header?
A. 4 bits
B. 8 bits
C. 16 bits
D. 32 bits
86. What is the typical range of Ephemeral ports?
A. 1 to 80
B. 1 to 1024
C. 80 to 8080
D. 1024 to 65535
87. A set of rules that govern all aspects of information communication is called
A. Server
B. Internet
C. Protocol
D. OSI Model
88. Controlling access to a network by analyzing the incoming and outgoing packets is called
A. IP Filtering
B. Data Filtering
C. Packet Filtering
D. Firewall Filtering
89. DHCP is the abbreviation of
A. Dynamic Host Control Protocol
B. Dynamic Host Configuration Protocol
C. Dynamic Hyper Control Protocol
D. Dynamic Hyper Configuration Protocol
90. What is the use of Bridge in Network?
A. to connect LANs
B. to separate LANs
C. to control Network Speed
D. All of the above
91. Network congestion occurs
A. in case of traffic overloading
B. when a system terminates
C. when connection between two nodes terminates
D. none of the mentioned
92. What is the meaning of Bandwidth in Network?
A. Transmission capacity of a communication channels
B. Connected Computers in the Network
C. Class of IP used in Network
D. None of Above
93 Which of the following is correct regarding Class B Address of IP address
A. Network bit – 14, Host bit – 16
B. Network bit – 16, Host bit – 14
C. Network bit – 18, Host bit – 16
D. Network bit – 12, Host bit – 14
94. ............provides a connection-oriented reliable service for sending messages
A. TCP
B. IP
C. UDP
D. All of the above
95. What does Router do in a network?
A. Forwards a packet to all outgoing links
B. Forwards a packet to the next free outgoing link
C. Determines on which outing link a packet is to be forwarded
D. Forwards a packet to all outgoing links except the originated link
96. What is the use of Ping command?
A. To test a device on the network is reachable
B. To test a hard disk fault
C. To test a bug in a Application
D. To test a Pinter Quality
97. What is the size of Host bits in Class B of IP address?
A. 04
B. 08
C. 16
D. 32
98. Which of the following is correct in CIDR?
A. Class A includes Class B network
B. There are only two networks
C. There are high & low class network
D. There is no concept of class A, B, C networks
99. The processes on each machine that communicate at a given layer are called
A. UDP process
B. Intranet process
C. Server technology
D. Peer-peer process
100. Which of the following layer is not network support layer?
A. Transport Layer
B. Network Layers
C. Data link Layer
D. Physical Layer
friends.