How often are BPDUs sent from a layer 2 device?
Answer: B
Every 2 seconds, BPDUs are sent out from all active bridge ports by default.
Enter details here
How many broadcast domains are created when you segment a network with a 12-port switch?
Answer: A
By default, switches break up collision domains but are one large broadcast domain.
Enter details here
In a network with dozens of switches, how many root bridges would you have?
Answer: A
You should have only one root bridge per network.
Enter details here
Two devices are in network if __________
Answer: A
Explanation: A computer network, or data network, is a digital telecommunications network which allows nodes to share resources. In computer networks, computing devices exchange data with each other using connections between nodes. The nodes have certain processes which enable them to share a specific type of data using a distinct protocol.
Enter details here
Which of the following networks extends a private network across public networks?
Answer: B
Explanation: A virtual private network extends a private network across a public network, and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network.VPN provides enhanced security and online anonymity to users on the internet. It is also used to unblock websites which are unavailable in certain regions.
Enter details here
Which protocol does DHCP use at the Transport layer?
Answer: C
User Datagram Protocol is a connection network service at the Transport layer, and DHCP uses this connectionless service.
Enter details here
Communication between a computer and a keyboard involves ______________ transmission.
Answer: D
Data flows in single direction.
Enter details here
A _________ set of rules that governs data communication.
Answer: A
Explanation: In communications, a protocol refers to a set of rules and regulations that allow a network of nodes to transmit and receive information. Each layer in the network model has a protocol set, for example, the transport layer has TCP and UDP protocols.
Enter details here
Communication between a computer and a keyboard involves ______________ transmission.
Answer: D
Explanation: In simplex transmission, data flows in single direction which in this case refers to the data flowing from the keyboard to the computer. Another example would be of the mouse where the data flows from the mouse to the computer only.
Enter details here
A set of rules that governs data communication:
Answer: A
None.
Enter details here