DDC_Finals Quiz

What is the responsibility of the data link layer in computer networking?

• Error detection and correction

• Routing algorithms

• Transport layer protocols

• Application layer protocols

What is the purpose of the Ethernet frame preamble?

• To synchronize receiver and sender clock rates

• To indicate the higher layer protocol

• To detect errors in the frame

• To identify the source and destination MAC addresses

Which IEEE standard is used for wireless LAN with a range of up to 11 Mbps?

• 802.11g

• 802.11n

• 802.11a

• 802.11b

What is the main advantage of using a bridge in a LAN?

• Protection against broadcast storms

• Support for arbitrary topologies

• Higher total max throughput

• Increased reliability

What is the primary function of the Point to Point Data Link Control (PPP) protocol?

• Packet framing and error detection

• Flow control and data re-ordering

• Multipoint link support

• Network layer address negotiation

Which technology uses frequency hopping to reduce interference from other wireless devices?

• IEEE 802.11g

• IEEE 802.11a

• Bluetooth

• Asynchronous Transfer Mode

What is the main advantage of using a switch in a LAN?

• Traffic isolation

• Support for arbitrary topologies

• Bit transparency

• Cut-through switching

What is the purpose of the Address Resolution Protocol (ARP) in computer networking?

• To detect errors in the frame

• To resolve IP addresses to MAC addresses

• To synchronize receiver and sender clock rates

• To encapsulate network-layer datagrams in data link frames

Which MAC protocol is used in IEEE 802.11 for multiple access?

• Polling from AP

• Token passing

• CSMA/CD

• Collision avoidance mechanisms

What is the primary function of the IEEE 802.11 base station in a wireless network?

• To communicate with wireless hosts

• To organize bridges in a spanning tree

• To provide protection against broadcast storms

• To interconnect gadgets