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77 Cards in this Set
- Front
- Back
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Cut-Through is a form of what in relation to switching? |
Frame Processing |
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What purpose does the SFD (Start Frame Delimiter) serve? |
Show that the preamble has ended, and the destination MAC is about to begin. |
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What protocols can be used to access the VTY lines on a cisco device? |
SSH and Telnet |
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What is this model called? |
Switching Model |
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What is the name of the bit set that is used to acknowledge a communication from a host, and is the last stage of the three way handshake? |
ACK |
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What type of cable is used to connect a switch to a host? |
Straight-through |
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What type of cable is used to connect a switch console port to a host? |
Rollover |
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DNS |
Domain Name System |
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What layer does DNS allow us to resolve an address for? |
Layer 3 |
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When Host A is sending an ARP request for Host B, what will be the destination MAC? |
ffff.ffff.ffff (broadcast) |
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The SHOW CONTROLLER SERIAL 0 command would show what useful information? |
DTE/DCE cable end |
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We must have two addresses to transmit data, what are they? |
Layer 2 and layer 3 addresses |
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Which protocol will be run first when attempting to deliver data to a new destination? |
DNS |
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DNS is reliant on what in order to function? |
a DNS server |
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ARP is reliant on what in order to function? |
IP address of destination |
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DHCP |
Dynamic Host Configuration Protocol |
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Four basic steps to how a host gets information through DHCP. |
DORA: Discover Offer Request Acknowledge |
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Enable the DHCP server on a device |
(config)#SERVICE DHCP |
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Create or edit an existing DHCP pool. |
(config)#IP DHCP POOL XX
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Specify the network and subnet mask (prefix) of the pool. |
(dhcp-config)#NETWORK 192.168.0.0/24 |
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Configure the amount of time the DHCP leases are valid. |
(dhcp-config)#LEASE XX |
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Specify addresses that should be excluded, and not distributed via DHCP in any pool. |
(config)#IP DHCP EXCLUDED-ADDRESS |
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Specify the DNS server(s) that should be advertised to clients. |
(dhcp-config)#DNS-SERVER |
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What is the subnet mask for 192.168.0.1/19? |
255.255.224.0 |
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What is 192.168.5.150 in binary? |
1100000.10101000.00000101.10010110 |
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What is the range for class A IP addresses? |
1-126 |
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What is the range for class B IP addresses? |
128-191 |
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What is the range for class C IP addresses? |
192-223 |
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Class A default network mask. |
255.0.0.0 |
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Class A default network bits. |
8 |
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Class A default host bits. |
24 |
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Class B default network mask. |
255.255.0.0 |
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Class B default network bits. |
16 |
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Class B default host bits. |
16 |
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Class C default network mask. |
255.255.255.0 |
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Class C default network bits. |
24 |
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Class C default host bits. |
8 |
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Loopback addresses. |
127.###.###.### |
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What is the range for class D (reserved for multicasting) IP addresses? |
224-239 |
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What is the range for class E (reserved for future use) IP addresses? |
240-255 |
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What does "Excluded address" refer to in reference to DHCP? |
Addresses that have been removed from the DHCP pool. |
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What layer does DNS allow us to resolve an address for? |
Layer 3 |
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Where is the ARP table stored for use by client machine? |
On each host in an ARP cache |
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Which protocol will be run first when attempting to deliver data to a new destination? |
DNS |
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DHCP is the preferred method of getting network information to hosts in the industry. |
True |
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In the following proxy arp environment, what MAC would Host A receive from ARP for Host B? |
Routers E0 (closest on router to Host A) |
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What does DNS stand for? |
Domain Name System |
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What is DHCP used for? |
Dynamically assigning network info to hosts |
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When Host B is sending an ARP reply for Host A, what will be the destination MAC? |
Host A's MAC |
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When is Proxy ARP required over normal ARP? |
When there is a router between Host A and Host B When each host is on a different network |
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Network information can be assigned manually to hosts without the use of DHCP. |
True |
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ARP is reliant on what in order to function? |
IP address of destination |
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Global configuration mode - effects the whole device (config) |
#CONFIGURE TERMINAL |
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Line configuration mode, used for the VTY lines and for the console port. (config-line) |
(config)#LINE VTY 0 4 |
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Interface configuration mode, used for changes on a specific interface. (config-if) |
(config)#INTERFACE FAST 0/23 |
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To connect to the console port, you must use these options with your rollover cable: |
9600 Bits per second No Parity 1 stop bit No flow control |
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Put a password on the console port, need two commands on CON 0 line: |
(config-line)#PASSWORD ___________ (config-line)#LOGIN |
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In order to use Telnet or SSH, you mus have a password configured to them (3 commands for lines 0 through 4): |
(config)#LINE VTY 0 4 (config)#LOGIN (config)#PASSWORD ___________ |
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In order to access the ENABLE mode from a VTY line, you must have an enable password set (2 commands): |
(config)#ENABLE PASSWORD ___________ (config)#ENABLE SECRET __________ |
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In order to get SSH setup and working (5 commands) |
(config)#IP DOMAIN-NAME (config)#HOSTNAME (config)#CRYPTO KEY GENERATE RSA (config)#USERNAME ______ PRIVILEGE 15 PASSWORD ______ |
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Command to show the current SSH session on the device |
#SHOW SSH |
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3 Banners for this class |
Exec Banner Login Banner MOTD |
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Exec Banner (2): |
Shown to users after they authenticate into the device. Shown via console or VTY |
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Login Banner (2): |
Shown to users before they authenticate into the device, below the MOTD. Only shown via VTY. |
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MOTD stands for: |
Message of the Day |
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MOTD (2): |
Shown to users before they authenticate into the device. (Usually the legal message is put here) Shown via console or VTY. |
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Command for Exec Banner |
(config)#Banner EXEC $(any symbol) ___________ $ |
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Command for Login Banner |
(config)#BANNER LOGIN *(any symbol) ______________ * |
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Command for MOTD |
(config)#BANNER MOTD #(any symbol) ______________ # |
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Command for Exec Timeout for 5 minutes |
(config-line)#EXEC-TIMEOUT 5 0 (check with help because this maybe in seconds not minutes) |
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Command for History |
#SHOW HISTORY |
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Command for History size |
(config-line)#HISTORY SIZE XX |
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Command to display the console logs on current line |
#TERMINAL MONITOR |
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What will the destination IP address of a DHCP discover message be? |
255.255.255.255 |
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A DHCP offer is the second step of the DHCP process, what type of transmission is it? |
Broadcast |
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What type of banner should be used to display to all users after they authenticate? |
Exec Banner |
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Because the DHCP process is dependent on ______, it is _______ affected by layer 3 connections |
broadcasts, severly |
