Network Architectures and Servers

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What is the primary function of a server computer?

To request data from clients
To provide services to client computers (correct)
To allocate tasks to other servers
To act as a client in a network

What is a characteristic of a client-server network?

Clients provide services to servers
Servers request data from clients
Each node acts as both a client and server
Clients request and receive data from servers (correct)

What is a peer-to-peer network characterized by?

A centralized network with one or more servers
A network where each node acts as both a client and server (correct)
A network where each node acts as a client only
A network where servers control the clients

What is the main difference between a client and a server computer?

The role in providing services to other computers (D) Signup and view all the answers

What is a Local Area Network (LAN) an example of?

A type of computer network (A) Signup and view all the answers

What do servers control in a network?

The allocation of tasks to client computers (A) Signup and view all the answers

What is the primary function of a physical connection in computer networks?

To allow data to flow between devices (C) Signup and view all the answers

Which type of cable is commonly used for computer networks and voice communications over long distances?

Twisted pair cable (A) Signup and view all the answers

What is the primary advantage of fiber-optic cables over twisted pair cables?

Higher transmission capacity (D) Signup and view all the answers

What is the primary difference between 2.4 GHz and 5 GHz Wi-Fi frequencies?

Range vs speed (B) Signup and view all the answers

What is the purpose of the cladding in an optical fiber?

To confine the light within the core (B) Signup and view all the answers

Why are coaxial cables less affected by noise or cross-talk?

Due to their shielding against external interference (B) Signup and view all the answers

What is the primary function of a modem?

To translate digital signals into analog signals for transmission (B) Signup and view all the answers

What is the purpose of a router in a home network?

To distribute incoming data to the correct device on a network (C) Signup and view all the answers

What is the term for the small chunks of data transmitted over the internet?

Packets (B) Signup and view all the answers

What is the function of the Preamble in an Ethernet packet?

To synchronize the network nodes and indicate the start of a packet (C) Signup and view all the answers

What is the primary function of a wireless access point (WAP)?

To broadcast a wireless signal for device connectivity (C) Signup and view all the answers

What is the purpose of the CRC in an Ethernet packet?

To perform error checking on the packet (D) Signup and view all the answers

What is the purpose of the Link Manager software in Bluetooth technology?

To establish links with other devices (C) Signup and view all the answers

What is a characteristic of Wi-Fi antennas in most desktop PCs?

They are often provided as an antenna-equipped expansion card or a USB antenna attachment (A) Signup and view all the answers

What is the main function of an access point in a Wi-Fi network?

To acknowledge and establish connections (A) Signup and view all the answers

What is the purpose of a hotspot?

To enable devices to access a Wi-Fi network (C) Signup and view all the answers

How do routers handle incoming packets from the internet?

They strip off the outer shell and check the address against a list of rules (D) Signup and view all the answers

What is the typical range of Bluetooth technology?

Up to 10 meters (A) Signup and view all the answers

What is a primary use of NFC applications?

All of the above (D) Signup and view all the answers

Why are NFC communications involving sensitive information sent securely?

To prevent interception by other devices (C) Signup and view all the answers

How can users add an extra layer of security to their smartphones?

By installing antivirus software (A) Signup and view all the answers

What is an example of a transit card payment using NFC?

Paying for a bus ride (C) Signup and view all the answers

What is a limitation of NFC communications?

Data can be intercepted by other devices (C) Signup and view all the answers

What is an example of an NFC application?

Apple Pay (B) Signup and view all the answers

What is a benefit of using NFC for mobile payments?

Convenience and ease of use (C) Signup and view all the answers

What can be stored behind a password for added security?

Sensitive data (A) Signup and view all the answers

What is a potential risk of using NFC for data transmission?

Interception by other devices (D) Signup and view all the answers

What is an example of access authentication using NFC?

Accessing a secure office (A) Signup and view all the answers

What is the primary function of the Link Manager (LM) in Bluetooth devices?

To manage device discovery and optimize power usage (B) Signup and view all the answers

What is the purpose of the Standby (Sniff) Mode in Bluetooth devices?

To save power while remaining available for potential connections (A) Signup and view all the answers

What is the difference between passive and active NFC devices?

Passive NFC devices can only transmit data, while active NFC devices can both send and receive information (A) Signup and view all the answers

What is the purpose of the Inquiry Mode in Bluetooth devices?

To search for available devices in the vicinity (D) Signup and view all the answers

What is the main difference between Bluetooth and NFC wireless communication methods?

Bluetooth is used for long-distance communication, while NFC is used for short-distance communication (C) Signup and view all the answers

What happens when a Bluetooth device enters Hold Mode?

It enters a low-power state to conserve energy, but can still be 'woken up' by another device (A) Signup and view all the answers