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CCNA - Lammel Ch. 2
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Terms in this set (22)
What is the function of the FCS field in an Ethernet frame?
Frame Check Sequence a four-octet field. Checks for errors when received using the CRC for verification.
What is an advantage of fiber-optic cable?
Not susceptible to EMI interference
What do you use to connect to a router or switch's console port?
RJ45 UTP rolled cable
What is CSMA/CD
Carrier Sense Multiple Access with Collision Detection. Ensures two devices don't transmit simultaneously
What does the first 24 bits(3 bytes) of a MAC address represent?
organizationally unique identifier (OUI).
What is the data link layer responsible for?
combining bits into bytes and bytes into frames
What is IEEE 802.3u?
Fast Ethernet at 100Mbps and covers 100Base-TX, 100BaseT4, and 100Base-FX
What is IEEE 802.3ae
standard for 10Gbase-SR, -LR, -ER, -SW, -LW, and -E.
What is IEEE 802.3ab?
standard for 1Gbps on twisted-pair
What must the bit rate be set at for a HyperTerminal connection?
What are the 1st, 2nd, and 3rd steps in data encapsulation?
1. User information converted to data 2. Data is converted to segments and reliable connection is setup 3. Segments are converted to packets and a logical address is placed in the header of the packet
What are the 4th and 5th steps in data encapsulation?
4. Packets or datagrams are converted to frames for transmission 5. Frames are converted to bits, and a digital encoding and clocking scheme is used.
Host to host - cable type?
Host to switch - cable type?
Router direct to host - cable type?
Switch to switch - cable type?
Router to switch - cable type?
Hub to Hub - cable type?
Hub to switch - cable type?
Host to router(console serial comm.) - cable type (straight-through, crossover, or rolled cable)?
What are the 1st & 2nd steps of when a collision occurs on an Ethernet LAN
1. A jam signal informs all devices that a collision occurred. 2. The collision invokes a random back off algorithm.
What are the 3rd & 4th steps of when a collision occurs on an Ethernet LAN
3. Each device on the Ethernet segment stops transmitting for a short time. 4. All hosts have equal priority to transmit after the timers have expired
THIS SET IS OFTEN IN FOLDERS WITH...
Chapter 3 Self Study Question
CCNA - Lammel Ch. 1
CCNA - Lammel Ch. 3
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