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71 Cards in this Set
- Front
- Back
which Network Control Protocol (NCP) does PPP use to encapsulate IP traffic?
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IPCP (IP Network Control Protocol)
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Which techniques allow switches to identify which VLAN each frame orginated from?
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ISL encapsulation and 802.1Q tagging.
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where is the shared memory located on a router?
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Dynamic RAM (DRAM)
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can full-duplex ethernet be used on a connection that connects a hub to a switch?
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NO
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the show interface command describes the funation a;lit of which layer ion the osi mopdel?
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latyer 2
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which command is used to delete entires from teh mac address tanle?
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clear mac-address-table
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which TCP/IP model layer corresponeds to the OSi model layer 2
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network access
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how many subnets does a class B network that uises subnet mask 255.255.255.0 support?
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254
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which command defines IGRP as teh routing protocol
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#router igrp
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which command is used to view the summary status of tinterfaces condfifgures f or ipo
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#show ip interface briwf
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which command is used to configure OSPF process?
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router ospf [process id]
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which technology uses analog signaling and is not capable of sending data beyond 9600 bits per second?
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PSTN
public switched telephone network |
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term used to describe intermittent interface or link failures?
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flapping
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what does VTP do and stand for?
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Vlan trunking protocol (vtp) you only have to add, delete or rename vlans on the server VTP switch and the info is passed to the other switches.
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command to enter the description to multiple interfaces at once.
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#interface range fastethernet 0/1-14
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what cisco switch allows both routing and swiching
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3350 switch
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max data transfer ate of 802.11b
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11mbs
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can a routers own access-list block it from sending packets out its own interface?
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no. acls do not apply to its own interfaces more specifically traffic orginating in the router.
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a network is slow, what kind of packets tell the users router that it is Receiving packets from a congested network?
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FECN (forward explicit congestion control)
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whats should the config registry be set to after you complete password recovery process
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0x2102
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which command modifies the config registry to bypass NVRAM and boot from flash memomory when issued at the >prompt
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o/r 0x2142
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comand to change AD of RIP to 90
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#distance 90
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name 3 wan protocols typically iused for leased lines
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ppp, hdlc, slip
[slip is serial line internet protcol]. |
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in which VTP mode are VLAN configuratons not stored in NVRAM?
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client
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which error dection protocol can cisco routers use to avoid PPP frame looping?
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magic number
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which router memory stores a bootable IOS image which is not typically used?
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ROM
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which protocol data units PDUs are used fro the exchange of data between the transport layers of the transmitting and receiving systems in an TCP/ip ethernetwork?
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TCP segments
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which ppp authenication protocol preforms a two-way hand shake?
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PAP (password authentication protocol)
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command when used cause the router to log messages for each IGRP packet
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#debug ip igrp events
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during password recovery what must the config reg be set to inorder to iginore the passwords stored in NVRAM
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0x2142
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osi layer that provides coding and conversion functions
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presentation
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which keyword at the end of an ACL entry show whether the ACL number if it was permited, or denied and port specific info?
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log
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ISL encapsulation is used to?
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tag frames with VLAN number to help id what frame is from what VLAN.
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which routing alogorithm adjusts to changing network conditions by analyzing incoming routing updates?
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Dynamic
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what would be the AD in a situation where the router does not beileve the source of the route and doesnt install the route in its routing table?
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255
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command to config igrp routing on a router with the AS #of 100
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router igrp 100
100 is the AS number |
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command to view the status of spanning tree on a switch?
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#show spanning-tree
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command to config secure MAC addresses on a switch?
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#switchport port-security mac-address [mac-address] [interface]
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command that ensures the first file from flash memory is loaded?
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#boot system flash
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which three WAN encapsulation protocols are typically used for packedt-switched WAN connections?
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X.25, frame-relay and ATM.
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what are the five states of STP?
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Blocking-receives bpdu's
listening-receives bpdu's, learning is disabled here. learning-adds to database, receives processes forwarding- disabled-receives and responds to nmm and receives bpdus. |
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to enable STP on vlan 2 on a new switch what needs to be done?
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nothing. STP{ is enabled by default.
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What bridge is selected as teh root bridge?
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bridge with the lowest (BRIDGE ID)
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what makes up the (Bridge Identifier) Bridge ID?
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the bridge priority plus the MAC address of the bridge. Two-bytes priority and six-byte MACa address.
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a single root bridge is eleced per broadcats domain?
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True.
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the command #show cdp neighbors detail, will display what about the remote router?
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ip address
platform hostname |
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what does the command
#debug ip packet 101 detail.... do? |
enables the debug process for access list 101. shows u each ACL decision that the router has to make and it outcome.
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config registry setting to ignore NVRAM and boot from flash?
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0x2142
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config registry to bypass NVRAM and boot from ROM.
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0x2102
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maintains table for each routed protocol it supports? What dynamic protocol is it?
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eigrp
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two commands to config chap on an interface?
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#ppp authentication chap
#username [remote_router] password [password] |
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eigrp max number of hops?
composite metric is ___ bits? |
- 224 hops
- 32bits or 4 bytes |
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command to config the "learning" time for spepific spanning-tree instances?
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#spanning-tree learn-time
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method which a group of contigiuos subnets are rolled up into one routing entry?
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route summerization
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command used to statically configure the interface into VLAN 20.
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#switchport access vlan 20
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vlan trunking protocol encapsulates ethernet frames
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ISL
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ios command to gather info about a router image file, such as the name of the system image file.
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show flash
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vtp operation. what must switches share to share VLAN info?
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-same domain name and password.
-active trunk link between them |
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what routing protocol converages the fastest?
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eigrp
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ISL and dot1Q.
which is proprietary and what do they stand for? |
InterSwitch Link, proprietary.
802.1q industry standard. |
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what mode will the following boot-into.
0x2142 0x2120 0x2101 0x2102 |
0x2142-boot normally ab bypass loading the config.
0x2120-boot into ROM Monitor mode. 0x2101-boot into bootstrap. 0x2102-boot ios from flash and config from nvram (normal). |
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command to change configuration registry?
change it from ROM monitor? |
#config-register [0x2142]
#confreg [0x2101 |
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#erase startup-config.... will remove all configs except ______ and what command must be entered to remove the final config?
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-vlans
-delete flash:vlan.dat |
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if a main interface is enabled are the subintertfaces automatically enabled?
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yes
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how to config a OSPF router id?
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two ways.
1. create a loopback addy. 2. #router-id ospf [number] #2 will override. |
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which ICMP message type is used by "ping" command to verify connectivity?
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Echo
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command to config port security on a switch?
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#switchport port-security
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network control protocol (NCP) that PPP uses to encapsulate CDP traffic?
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CDPCP (CDP Network Control Protocol)
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ACLs that allow IP packets to be filtered based on upper-layer *session* information?
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Reflexive ACLs
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command that verifies IOS verision running on router and available system memory?
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show version
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process that a router follows when it advertisies a network as unreachable to the interface from which the update whas received?
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Poision-reverse
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