Show:
MAC Addresses
Switching
ARP
Frames and Access Methods
Potpourri
100
Which layer should you identify with MAC addresses?
Layer 2
100
If one switch is capable of full duplex and another is capable of half duplex, which mode will be used when those switches communicate?
half-duplex
100
What does ARP stand for?
Address Resolution Protocol
100
Which Ethernet Frame field is used for synchronization?
The Preamble
100
True or False: The Data Link Layer uses the Logical Link Control Layer to communicate with the upper layers of a protocol suite.
True
200
A MAC address can be broken into two parts. What are they?
Vendor Identification and an OUI
200
Which method of switching always stores the entire frame before forwarding it on to its destination?
Store and forward
200
What is the purpose of ARP?
It resolves MAC addresses to IP addresses.
200
Which memory buffering method is most likely to drop frames?
Port-based Buffering
200
An Ethernet line card is used to do this on a modular switch…
Add more ports
300
The first half of a MAC address is used to identify what?
The Vendor
300
A layer 3 switch makes forwarding decisions using which types of addresses?
MAC and IP addresses
300
When is an ARP broadcast generated?
When a node has the destination IP address, but not the MAC address.
300
What is the major problem with the CSMA/CD access method on network media?
Collisions occur
300
Which sublayer is responsible for the data encapsulation process?
MAC
400
What can this hexadecimal code be expressed as in binary? 0A-FE-18
101011111110000110000000
400
What is the purpose of the no switchport command?
It is used to configure a port as a layer 3 interface
400
Refer to the exhibit. PC1 issues an ARP request because it needs to send a packet to PC2. In this scenario, what will happen next?
PC2 will send an ARP reply with its MAC address
400
The CA in CSMA stands for…
Collision Avoidance
400
Which is true about a fixed configuration Ethernet switch? The number of ports on the switch cannot be increased. or A fixed configuration switch may be stackable.
Both are true.
500
When would a switch record multiple entries for a single switch port in its MAC address table?
When another switch is connected to the switch port.
500
Connections between specific devices, such as switch-to-switch, switch-to-router, switch-to-host, and router-to-host device, once required the use of a specific cable types (crossover or straight-through). Which feature in switches allows us to use either type of cable?
Auto-MDIX
500
A host is trying to send a packet to a device on a remote LAN segment, but there are currently no mappings in its ARP cache. How will the device obtain a destination MAC address?
It will send an ARP request for the MAC address of the default gateway.
500
What does nondeterministic mean when used to describe access methods?
It means that nodes don't keep track of "turns". They just send data and detect collisions later.
500
Which type of switch configuration treats multiple switches as one with the use of a special cable?
Stackable Configuration