Network | MCQs

Explanation

A router is a device that connects two or more packet-switched networks or subnetworks.

It serves two primary functions:

1. Managing traffic between these networks by forwarding data packets to their intended IP addresses.
2. Allowing multiple devices to use the same Internet connection.

Explanation

A socket is a endpoint for communication between two devices (computer, phone, etc.) in a network. It is a 4-tuple that consists of:

1. Source IP address
2. Source port
3. Destination IP address
4. Destination port

Explanation

• In a Star Network Topology, each network node (computer, printer, etc.) is connected to a central device called a hub or switch.
• This central device acts as a connection point for all the nodes, and data transmission occurs through it. 
• This topology is called a star topology because the connections resemble a star, with the hub at the center and the nodes at the points.

Explanation

• OSPF (Open Shortest Path First) establishes route adjacencies on point-to-point links, but does not perform the DR (Designated Router)/BDR (Backup Designated Router) election process on these links.
• This is because point-to-point links only have two routers connected, so there is no need for a DR or BDR.

Explanation

The "show interfaces" command displays the configurable parameters and statistics of all interfaces on the router, including:

• Interface status (up or down)
• IP address and subnet mask
• Speed and duplex settings
• Number of packets received and transmitted
• Number of errors and collision- And other interface-specific settings and statistics

Explanation

A Firewall is a piece of hardware or software that reads all data packets in a network and blocks or allows them based on predetermined security rules.

It acts as a barrier between a trusted network and an untrusted network, such as the internet.

Explanation

The common port used for Apache and web browsing is 80.

Explanation

A type of network that is connected by physical switches is called a Switched Network.

Explanation

Secure your computer physically by Installing reliable, reputable security and anti-virus software.

Explanation

Each node in star topology is connected to a central minicomputer which controls the network.

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