61. Which performs modulation and demodulation?
- a) Modem
- b) Fiber optic
- c) satellite
- d) coaxial cable
Answer: A - A modem (Modulator-Demodulator) performs modulation (digital to analog) and demodulation (analog to digital).
62. Bluetooth uses_______
- a) frequency hopping spread spectrum
- b) orthogonal frequency division multiplexing
- c) time division multiplexing
- d) none of the mentioned
Answer: A - Bluetooth uses Frequency Hopping Spread Spectrum (FHSS) to avoid interference and improve security.
63. WPA2 is a Router wifi security system_______
- a) TRUE
- b) FALSE
- c) N.A.
- d) N.A.
Answer: A - TRUE. WPA2 (Wi-Fi Protected Access 2) is a security protocol used for router WiFi networks.
64. IO means_______
- a) Input outdoor
- b) input output
- c) input outgoing
- d) N.A.
Answer: B - I/O stands for Input/Output, referring to data transfer between a computer and external devices.
65. Bluetooth is the wireless technology for_______
- a) local area network
- b) personal area network
- c) both (a) and (b)
- d) none of the mentioned
Answer: B - Bluetooth is designed for Personal Area Network (PAN), typically within 10 meters range.
66. MESH and STAR Topology are same_______
- a) YES
- b) NO
- c) N.A.
- d) N.A.
Answer: B - NO. Mesh and Star topologies are different; Mesh has multiple connections, Star has central hub.
67. An advantage of the three-tier architecture over the two-tier architecture is_______
- a) Easier maintenance
- b) Better control over the data
- c) Better performance
- d) All of the above
Answer: C - Better performance is a key advantage of three-tier architecture due to separation of presentation, logic, and data layers.
68. The slowest transmission speeds are those of_______
- a) twisted-pair wire
- b) coaxial cable
- c) fiber-optic cable
- d) microwaves
Answer: A - Twisted-pair wire has the slowest transmission speeds among common media, typically up to 1 Gbps for Cat6.
69. Active Directory used in_______
- a) Windows Server 2008
- b) Windows xp
- c) Windows 7
- d) Windows Vista
Answer: A - Active Directory is a directory service primarily used in Windows Server (2008, 2012, 2016, 2019) environments.
70. HTTP uses a TCP connection to_______
- a) establish link between servers
- b) transfer whole database
- c) client server connections
- d) transfer files
Answer: D - HTTP uses TCP connection to transfer files (web pages, images, videos) between client and server.
71. Transmission capacity of a media is called_______
- a) Bandwidth
- b) Media interference
- c) Duplex
- d) None of this
Answer: A - Bandwidth refers to the transmission capacity of a communication medium, measured in bits per second.
72. For routes traffic between two Local area network we need_______
- a) Gateway
- b) Repeater
- c) Router
- d) None of this
Answer: C - A Router is needed to route traffic between two different Local Area Networks (LANs).
73. URL stands for_______
- a) Uniform Resource Loader
- b) Uniform Resource Line
- c) Uniform Resource Locator
- d) Uniform Resource Lighter
Answer: C - URL stands for Uniform Resource Locator, the address of a web page or resource on the Internet.
74. Modulator and demodulator device name_______
- a) Router
- b) Repeater
- c) Modem
- d) None of this
Answer: C - Modem (Modulator-Demodulator) performs both modulation and demodulation functions.
75. we are transfer video data in local area network_______
- a) YES
- b) NO
- c) N.A.
- d) N.A.
Answer: A - YES. Video data can be transferred over a LAN using protocols like SMB, FTP, or streaming.
76. RJ45 is a connector_______
- a) TRUE
- b) FALSE
- c) N.A.
- d) N.A.
Answer: A - TRUE. RJ45 is a standardized connector used for Ethernet networking cables.
77. How long is an IPv6 address?
- a) 32 bits
- b) 128 bytes
- c) 64 bits
- d) 128 bits
Answer: D - An IPv6 address is 128 bits long (16 bytes), written as 8 groups of 4 hexadecimal digits.
78. Choose odd one_______
- a) Bus Hubs
- b) Enterprise Hubs
- c) low-end standalone hubs
- d) stackable hubs
Answer: A - "Bus Hubs" is the odd one out as it is not a standard hub classification; others are real hub types.
79. Which of this is not a network edge device?
- a) PC
- b) Smartphones
- c) Servers
- d) Switch
Answer: D - A switch is a core network device, not an edge device. PCs, smartphones, and servers are edge devices.
80. Routing is done on which layer_______
- a) Datalink Layer
- b) Network Layer
- c) Session
- d) Presentation
Answer: B - Routing is performed at the Network Layer (Layer 3) of the OSI model using IP addresses.