Search found 824 matches

by raoneel2016
Tue Dec 13, 2016 3:12 pm
Forum: Cisco
Topic: What are permanent MAC addresses on a Catalyst switch?
Replies: 1
Views: 1636

Re: What are permanent MAC addresses on a Catalyst switch?

Permanent MAC addresses are entered manually by the administrator and are not aged out.
by raoneel2016
Tue Dec 13, 2016 3:11 pm
Forum: Cisco
Topic: What are dynamic addresses on a Catalyst switch?
Replies: 1
Views: 1179

Re: What are dynamic addresses on a Catalyst switch?

Dynamic addresses are addresses that the switch learns about dynamically through the learning process. If the switch does not see a MAC address for a certain amount of time, it drops the MAC address
by raoneel2016
Tue Dec 13, 2016 3:09 pm
Forum: Cisco
Topic: What is full-duplex transmission mode?
Replies: 1
Views: 1183

Re: What is full-duplex transmission mode?

In full-duplex mode, a station can send and receive at the same time. In full-duplex mode, collision detection is disabled. This mode offers 100 percent efficiency in both directions.
by raoneel2016
Tue Dec 13, 2016 3:08 pm
Forum: Cisco
Topic: What is half-duplex transmission mode?
Replies: 1
Views: 1316

Re: What is half-duplex transmission mode?

Half-duplex transmission is the default mode that Ethernet functions in. In half-duplex transmission, a device can only send or receive--not do both at once. In half-duplex mode, stations are susceptible to collisions, and efficiency is rated at 50 to 60 percent.
by raoneel2016
Tue Dec 13, 2016 3:07 pm
Forum: Cisco
Topic: What is the default switching mode in Cisco Catalyst 1900 switches?
Replies: 1
Views: 1275

Re: What is the default switching mode in Cisco Catalyst 1900 switches?

The default switching mode for the Catalyst 1900 is fragment-free.
by raoneel2016
Tue Dec 13, 2016 3:06 pm
Forum: Cisco
Topic: What is the Cisco Catalyst fragment-free switching method?
Replies: 1
Views: 979

Re: What is the Cisco Catalyst fragment-free switching method?

Also known as modified cut-through, fragment-free switching checks the first 64 bytes before forwarding the frame. Ethernet specifications state that collisions should be detected during the first 64 bytes of the frame. By reading the first 64 bytes of the frame, the switch can filter most collision...
by raoneel2016
Tue Dec 13, 2016 3:05 pm
Forum: Cisco
Topic: What is the Cisco Catalyst cut-through switching method?
Replies: 1
Views: 1026

Re: What is the Cisco Catalyst cut-through switching method?

In cut-through switching mode, the switch only checks the frame's destination address and immediately begins forwarding the frame out the appropriate port. Because the switch checks the destination address in only the header and not the entire frame, the switch forwards a collision frame or a frame ...
by raoneel2016
Tue Dec 13, 2016 3:04 pm
Forum: Cisco
Topic: What is the Cisco Catalyst store-and-forward switching method?
Replies: 1
Views: 1060

Re: What is the Cisco Catalyst store-and-forward switching method?

In the store-and-forward switching method, the switch receives the entire frame before it forwards it. The switch reads the cyclic redundancy check (CRC) to make sure the frame is not bad. If the frame is good, the switch forwards it. Because the switch stores the frame before forwarding it, latency...
by raoneel2016
Tue Dec 13, 2016 3:03 pm
Forum: Cisco
Topic: What is microsegmentation?
Replies: 1
Views: 671

Re: What is microsegmentation?

Each workstation or network device on the network has its own dedicated segment - also known as a Collision Domain - to a switch. Each device gets the segments full bandwidth and does not have to share the dedicated segment with other devices. Collisions are reduced because each segment is its own C...
by raoneel2016
Tue Dec 13, 2016 3:02 pm
Forum: Cisco
Topic: What will occur when you attempt to segment a network with hubs and repeaters?
Replies: 1
Views: 712

Re: What will occur when you attempt to segment a network with hubs and repeaters?

Basically, hubs and repeaters become extensions of the physical cable plant. All devices that connect to either a hub or a repeater share the same bandwidth and by definition hubs and repeaters create a single broadcast and collision domain. Think of both devices are pass-through devices much like a...

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