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98 Cards in this Set

  • Front
  • Back
distance vector default max metric is?
15 hops
what is a supernet route?
ip classless only.
10.0.0.0/8 is the supernet route of 10.10.0.0/16
ip classless is the default after what IOS version
11.3
classful router will drop packet destinted for a network not explictly in its routing table
true
command to set ip classless
config#ip classless
3 features used to enhance the stability of IGRP
holddown timer
split horizon
posion reverse updates
IGRP detects a down neighbor by
the lack of updates
IGRP
Timers & Time variable
update timer-90sec
invalid timer-3x the update time
holddown timer-3x update + 10sec
flush timer- 7x update timer
what distance vector route protocols dont support VLSM
RIP v1
IGRP
IP as a method of delivery is?
unreliable method and is best effort.
icmp is the component of the __________ protocol stack.
TCP/IP
icmp doesnt provide reliablity.
Reliability is provided by the ______ _____ ________
upper layers protocols
ICMP is at what layer of TCP/IP protocol stack
internet
IETF
internet engineering task force
when does a router go into setup mode? 3 choose
#setup
initial conf
after deleting backup conf
#show version
shows (3 things)
last restart method
config register settings
located where IOS loaded
command to see active IOS (choose two)
#show flash
#show version
an interface description should have (2 things)
circuit number
location and purpose
what are the osi layer 4 protocols
tcp, udp, spx
osi layer 2. whats its purpose and do?
data link layer.
*error dection and error recovery
combination of bits into bytes
mac address
osi layer 6 protocol example
compression, encryption, jpeg, ascii, ebdic
what is PDU
protocol data unit
represents the bits that include headers and trailers & encapsulated data
Describe the Layers of the TCP/IP Architecture
application
transport
internet
network access
osi layer 3 protocol example
network layer
ip ipx
name osi model layers
application
presentation
session
transport
network
data link
physical
give example of protocols for each layer of the tcp/ip archiectture.
application-http, pop3, smtp
transport-tcp, udp
internet-ip,
network access- ethernet, frame relay
What does the TCP/IP Application layer do?
Provides the interface between the software running on the computer and the network itself.
What is an example of an OSI Layer 1 protocol?f
EIA/TIA-232, v.35
What is the 5 step TCP/IP |Data Encapsulation process?
1. Create the application data and headers
2. Package the data for transport.
3. Add the destination and source network layer address to the data
4. Add the destination and source data link layer address to the data
5. Transmit the bits
What is layer 4 of the OSI model? What is it's main purpose?
*Transport
*Reliable or unreliable delivery
*Multiplexing
What command enables CDP on the interface of a router.
Router(config-if)# cdp enable
Transmitting type length values (TLVs) inside advertisements is a process used by CDP to provide information about neighboring devices. What information is displayed by these TLVs? (Choose three.)
interface info for connected device
name of device
holdtime 4 ads
command to see cdp info on connected deviced\s
#show cdp neighbors
For which three network layer protocols does CDP provide information? (Choose three.)
IP, IPX, APPLETALK
when in a telnet session if it is suspended and u hit enter what happens
session is resumed
telnet terminates after ___mins of inactivity
10min
Which of the following can be configured as a source for the IOS image by using the boot system command? (Choose two.)
tftp server
flash memory
An IOS image can be copied into flash from a TFTP server. Which of the following statements are true regarding this process? (Choose three.)
-series of !'s are displayed
-after flash downld its verified
-series of e's displayed as current IOS erased.
What command can be used in ROM monitor mode to run the IOS image in flash?
rommon1> boot flash: filename
boot system commands saved in?
NVRAM
what is the sequence to load the IOS boot system statements.
NVRAM
FLASH
TFTP
ROM (rommon)
command to set boot system startup configuration statement from flash
conf#boot system flash IOS_filename
command to set boot system startup configuration statement from tftp
conf#boot system tftp IOS_filename server_ip_address
command to set boot system startup configuration statement from rommon
conf#boot system rom
command syntax
vertical bars (|)
serperate alternative, elements
command syntax
square brackets []
indicate optinal elements
command syntax
braces {}
indicate a required choice
command syntax
braces within brackets [{}]
indictae a required choice within an optional elemenet
command syntax
boldface
indicates commands entered literally as shown
command syntax
Italics
means you supply the actual value
config registry
what does this boot to
0x2100-
0x2101
0x2107
0-boots to ROM Monitor mode (RX BOOT)
1-router boots from IOS in ROM
any- router will first look in flash for IOS
what does the config resgister do
it determines the location of thesouce files to boot the router
boot system rom
instructs router to boot from rom
SMTP port & pro
25
tcp
SNMP port and pro
161
udp
Network Protocol - HDLC
(High Level Data Link Control Protocol) Specifies encapsulation for (High Level Data Link Control Protocol) Specifies encapsulation for synchronous serial data links using bit-orientated framing
synchronous
even
csma/cd
carrier sense multiple access with collision detection
Lenght
100baseFX
1000baseCX
1000baseSX
1000baseLX
100baseFX-400meters
1000baseCX- 25 meters
1000baseSX- 260 meters
1000baseLX- 3-10 meters
gbic
Gigabit Interface Converter is a hot-swappable I/O device that plugs into a Gigabit Ethernet port. A key benefit of using a GBIC is that it is interchangeable. This allows users the flexibility to deploy other 1000Base-X technology without having the need to change the physical interface or model on the router or switch. GBIC support UTP and fiber media for gigabit Ethernet transmissions.
unicast
Frame sent from one device to a single destination
broadcast
Frame sent from one device to all other connected devices or addresses
multicast
Frame sent from one device to a specific group of devices
what do switches do
divide network segments to reduce the number fo devices competeing for bandwidth
What do distance vector algorithms require each router in the network to send?
the entire routing table to each neighboring router
What happens to a static route entry in a routing table when the outgoing interface is not available?
The route is removed from the table
When a routing table update is received by a router in a distance vector network, which of the following occurs
The hop count metrics for the enclosed routes are incremented
How would an administrator configure a static route for use if a primary route failed?
configure the route with an administrative distance greater than the default value
Which command will display the source of the system boot image?
#show version
what can be gained from the IOS image filename? 3 things
software version
hardware platform
configuration register setting of 0x2102 indicate on a router?
tells the router to look in the startup config for boot system commands
router startup sequence
rom-bootstrap
flash, tftp, rom-locate and load IOS
nvram,tftp,console-locate and load config file or enter startup
boot system commands saved in
NVRAM
stores a subset IOS image and can be booted
ROM
the order in which router looks for IOS images to load depends on the boot field setting in the
config register
command to modilfy config register
#conf t
#config-register 0x210x
0x2100
ROM mon
use "b" or "boot" command to boot the system
0x2101
automatically boot from ROM (boots first image in flash.
0x2102 to 0x210f
NVRAM for boot system commands, if NONE found it attemps to boot the first file in FLASH.
crossover cable pin setup
1-3
2-6
3-1
4-4
5-5
6-2
7-7
8-8
rolled cable pin setup
1-8
2-7
3-6
4-5
5-4
6-3
7-2
8-1
consider upper layer protocols
app, present and session layers
five steps of data encapsulation
1.user info is converted into bits
2.data is converted into segments
3.segments are converted into packets or datagrams
4.packets or datagrams are converted into frames
5. frames are converted into bits for transmission
aaddress classes
a,b,c
a.0-127
b.128-191
c.192-223
ISDN
integrated services digital network
is a circuit switched connection,
the destination unreachable message type notifies source host that a receiving host or network is
not available
below is output of what command
1.sources of routing updates
2.networks being advertisied
3.update timer values
show ip protocols
acl id numbers
ip, extended and ipx standard
standard-99
extended-100
standard ipx-888
which tasks can be accomplished by using the command history feature
set command history buffer size
recall previously entered commands
How does ICMP improve data transfer reliability in IP networks?
ICMP error messages are returned to the sending device when a packet is dropped by a router.
Which devices along a data transmission path are notified by ICMP when delivery failures occur?
source devices only
#



Which condition could cause a fragmentation needed ICMP destination unreachable message to be sent?
A packet is forwarded from a Token Ring network to an Ethernet network.
DEFAULT state of the interface on a router?
administrativly down, line protocol down
What will be the response from the router after the command, "router(config)# hostname portsmouth" is entered?
portsmouth(config)#
modes and interfaces that can be protected with passwords. (Choose three.)
vty interface
console interface
priviledged exec mode
Which basic components do a router and a standard desktop PC have in common? (Choose three.)
cpu
input/output interfaces
system bus
An internetwork must include which of the following? (Choose three.)
switching
dynamica and static routing
consistent end-to-end addressing
What is a teleradiology company do?
Radiologists read images over the internet off of a PACS system. www.sheelimaging.com is an example of a teleradiology company