Questions and Problems
What is a bridge?
Define a segment.
What information is stored in a bridge table?
What is an association on a bridge, and how is it used?
What are excessive amounts of broadcasts on a network called?
Which command is used on a computer to view the contents of the ARP cache?
An empty ARP cache indicates what?
Why do entries into the bridging table have a limited lifetime?
Which of the following are advantages of using a bridge to interconnect LANs?
- Works best in low traffic areas
- Relatively inexpensive
- Can be used to route data traffic
- Easy to install
- Reduces collision domains
The network switch operates at which layer of the OSI model?
Another name for a switch is
- multiport repeater
- multiport bridge
- multiport router
- multiport hub
How does a switch provide a link with minimal collisions?
The link for a switch connection is isolated from other data traffic except for what type of messages?
Explain what data traffic is sent across a network when a computer pings another computer and a hub is used to interconnect the computers.
Explain what data traffic is seen by computer 3 when computer 1 pings computer 2 in a LAN. A switch is used to interconnect the computers.
Explain the concept of dynamic assignment on a switch.
Define aging time on a switch.
Explain how a switch learns MAC addresses, and where a switch stores the address.
What happens if a MAC address is not stored in CAM on a switch?
Which two modes are used by a switch to forward frames?
Which switch mode offers minimum latency?
What is error threshold, and which mode is it associated with?
Explain the difference in store-and-forward and the cut-through mode on a switch.
How does a layer 3 switch differ from a layer 2 switch?
What is meant by the term wire-speed routing?
A router uses the network address on a data packet for what purpose?
What is the logical address?
The physical connection where a router connects to the network is called the
- router port
- network port
- network interface
- router interface
The connection to the router’s console input is typically which of the following?
AUI stands for
- Auxiliary Unit Input
- Attachment Unit Interconnect
- Auxiliary Unit Interface
- Attachment Unit Interface
The AUI port on a router connects to which networking protocol?
- Token Ring
Define enterprise network.
The router interface most commonly used to interconnect LANs in a campus network is
- console port
Serial interfaces on a router are typically used to
- interconnect routers
- interconnect hubs
- connect to communication carriers
- connect to auxiliary ports
The designation E0 indicates
- Ethernet port 0
- Ethernet input
- External port 0
- Exit port 0
Routing tables on a router keep track of
- port assignments
- MAC address assignments
- gateway addresses of LANs
- routes to use for forwarding data to its destination
The convention used for naming of the serial port 0 on a router is
- System 0
- Serial interface 0
- Serial AUI 0
Define the term gateway.
What is the purpose of the fast link pulse?
Which of the following is a disadvantage of the auto-negotiation protocol?
- Only useful in LANs that have multiple connection capabilities.
- A failed negotiation on a functioning link can cause a link failure.
- It’s recommended for use in critical network data paths.
- It works at 10Mbps.