Cisco I IC 112906
Compare the following :
10BASE 5 and 10BASE T
10 BASE 5 has a higher segment length (500 meters) but only supports coaxial cable
10 BASE T has a lower segment length (100 meters) but supports CAT 3,4, and 5 UTP cable
100BASE-TX and 100BASE-FX
100 BASE TX has a lower segment length (100 meters) but only supports CAT 5 UTP
100 BASE FX has a higher segment length (400 meters) and supports 62.5/125 fiber optic cable
What is the pinout for a console cable ?
1 ---------- 8
2 ---------- 7
3 ---------- 6
4 ---------- 5
5 ---------- 4
6 ---------- 3
7 ---------- 2
8 ---------- 1
Why would a network administrator choose to implement Gigabit Ethernet
from the backbone to the end user ?
higher bandwith provides high speed file transfer, maybe for a person who needs a high amount of bandwith because of the nature of his job i.e. computer graphics artist
On what type of network device are you likely to find serial 1/0
Router
What does IEEE 802.3 describe?
Ethernet LAN type i.e. 802.3u Fast Ethernet
How many pins does an AUI port have?
15 pins
A repeater allows multiple hosts to be connected by taking an
incoming signal and generating a new, clean network signal.
Why doesnt the repeater simply amplify the incoming signal?
Because the signal would be amplified after its distortion/deterioration took place,
Making a large deteriorated signal and transmitting the deteriorated signal along the rest of the network.
Peer to peer and client server are 2 types of networks
Switches build data tables to make decisions on how to deal with data frames.
Name 2 pieces of information contained within these tables.
The interface and the MAC address
Switches operate at which layer of the OSI model?
Data-Link
A network associate is performing an initial configuration on a new Cisco 2811
router. Which port on the router will be used to perform this task?
serial port (DB-60)
MAC is associated with which layer of the OSI model?
Data-Link
How do you connect an AUI port on a Cisco 2500 router to a CAT 5 ethernet
cable?
Use a transceiver that converts an AUI to an RJ-45
Which device has a higher latency switches or bridges? Why?
Switches, because they simply transmit frames; Bridges decide whether to filter, flood, or copy the frame onto another segment
Name 3 disadvantages to peer to peer networks.
- As networks increase in size peer-to-peer relationships become difficult to coordinate
- Scaling: peer-to-peer networks only operate with ten or fewer computers otherwise performance decreases
- Security: Each user controls security, making it difficult to maintain
Describe a situation where a router would be DTE.
Router used to connect private network to the Web or a WAN
Describe a situation where a router would be DCE.
Router used to connect LAN 1 to LAN 2 (router would be located and connected at LAN 2)
Define and describe ISDN BRI
- Has two types of interfaces BRI U and BRI S/T
- NT1 Network Termination Device located between Router and service provider ISDN switch
- A router is BRI U if the NT1 is integrated
- A router is BRI S/T if the NT1 is not integrated
What network device provides connectivity to a WAN ?
DSL or cable modem