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WorksheetsITE 223- Formative Assessment # 3
Total questions: 50
Worksheet time: 33mins
Layer responsible for NIC to NIC communication.
(a)
Two sublayers of the Data Link Layer.
(a)
Type of topology showing physical device connections.
(a)
Type of network topology using a single permanent link between two endpoints.
(a)
Access method used by WLANs.
(a)
Access method used by legacy Ethernet LANs.
(a)
Three basic parts of a data link frame.
(a)
Physical address used for local delivery within a network.
(a)
Minimum Ethernet frame size.
(a)
Destination MAC address of an Ethernet broadcast frame.
(a)
Switching method where the entire frame is checked for errors before forwarding.
(a)
Switching method that forwards a frame after reading only the destination MAC address.
(a)
Unique identifier assigned by IEEE for MAC addresses.
(a)
Protocol used to find MAC addresses for IPv4 addresses.
(a)
Feature that allows automatic cable type detection by switches.
(a)
True or False: The Data Link Layer is responsible for routing packets across multiple networks.
True
False
True or False: The MAC sublayer manages media access and frame encapsulation.
True
False
True or False: Mesh topology provides the lowest availability among WAN topologies.
True
False
True or False: In CSMA/CD, devices detect collisions and retransmit after random backoff time.
True
False
True or False: A frame smaller than 64 bytes is considered valid in Ethernet networks.
True
False
True or False: A unicast MAC address is used to send frames to a single device.
True
False
True or False: A broadcast frame is processed by all devices in the broadcast domain.
True
False
True or False: A switch’s MAC address table is preloaded at startup.
True
False
True or False: Fast-forward switching reduces latency but may forward error frames.
True
False
True or False: Full-duplex communication only allows one device to transmit at a time.
True
False
What does the Data Link Layer provide to the network layer?
Encryption
Framing and access control
Routing
Logical addressing
Which sublayer manages data encapsulation in Ethernet?
LLC
MAC
Network
Physical
Which topology directly connects two devices?
Bus
Point-to-point
Star
Ring
Which access method is used by Wireless LANs?
CSMA/CD
Token passing
CSMA/CA
Polling
What layer in the OSI model is responsible for frames?
Network
Data Link
Transport
Session
What happens to Ethernet frames larger than 1518 bytes?
Accepted
Dropped
Rerouted
Acknowledged
What is the Ethernet MAC address length?
32 bits
48 bits
64 bits
128 bits
Which organization defines Ethernet standards?
ISO
IEEE
ITU
ANSI
Which method forwards a frame immediately after reading the destination MAC?
Store-and-Forward
Cut-Through
Fragmentation
Filtering
Which field is included in an Ethernet frame for error checking?
TTL
FCS
IP Header
SFD
What address is used for Ethernet broadcast communication?
00-00-00-00-00-00
FF-FF-FF-FF-FF-FF
01-00-5E-00-00-00
33-33-00-00-00-00
When a switch receives a frame and has no entry for the destination MAC, it will:
Drop it
Flood it
Queue it
Encrypt it
Which memory buffering uses a common memory pool shared among all ports?
Port-based
FIFO
Shared memory
Stack
Which switching variant checks the first 64 bytes before forwarding?
Store-and-Forward
Fast-Forward
Fragment-Free
Synchronous Forward
In Ethernet, which device uses MAC addresses to make forwarding decisions?
Router
Switch
Hub
Modem
What does ARP resolve?
Hostnames to IP addresses
IP addresses to MAC addresses
MAC addresses to IP addresses
Ports to MAC addresses
What type of Ethernet cable is typically used between two switches without auto-MDIX?
Straight-through
Crossover
Console
Fiber optic
What happens if there’s a duplex mismatch on an Ethernet link?
Link increases speed
Severe performance degradation
Link automatically corrects itself
Switch reboots
Which is NOT a MAC address type?
Unicast
Multicast
Broadcast
Anycast
Which switching method ensures frames with errors are not propagated?
Store-and-Forward
Fast-Forward
Cut-Through
Fragment-Free
Which switching method ensures frames with errors are not propagated?
Store-and-Forward
Fast-Forward
Cut-Through
Fragment-Free
What is the maximum length of an Ethernet frame?
4096 bytes
2048 bytes
1518 bytes
1024 bytes
True or False: Ethernet operates at the Physical and Data Link layers of the OSI model.
False
True
Which protocol is used to dynamically assign IP addresses to devices on a network?
DNS
ICMP
ARP
DHCP
What is the purpose of the Frame Check Sequence (FCS) in an Ethernet frame?
To provide error detection
To indicate the frame type
To identify the source MAC address
To manage flow control
