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76 Cards in this Set
- Front
- Back
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Briefly describe the Class A IP addresses.
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Assigned for governments and large corporations, 1-126 for their first octet number. Basic subnet masking of 255.0.0.0.
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Basic routing protocols such as RIP version 1 and IGRP support VLSM.
True False |
False
They cannot support VLSM because they do not send subnet information in their updates. |
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The CIDR addressing method allows the use of a ____ to designate the number of network bits in the mask.
prefix suffix route mask mask table |
prefix
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The ____ numbering system is base 16; in other words, 16 numerals are used to express any given number.
binary decimal hexadecimal vigesimal |
hexadecimal
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It seems that 127.0.0.1 (decimal) is the highest assignable Class A address, but that particular address range is reserved as the ____ address.
multicast loopback broadcast unicast |
loopback
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IPv4 networks rely on ____, which is inefficient because many hosts unnecessarily see and partially process traffic not ultimately destined for them.
multicasting anycasting unicasting broadcasting |
broadcasting
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In a ____ world, the routing updates carry subnet mask information and allow different masks to be used on different subnets.
classful class-dependant class-based classless |
classless
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To determine how many digits are used for the network identifier, you must look at the ____, which is a required component for all IP hosts.
subnet mask MAC mask network mask TCP/IP mask |
subnet mask
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____ is a transition method that encapsulates IPv6 traffic inside IPv4 packets.
Tunneling Scheduling Natting Dual stack |
Tunneling
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TCP/IP networks cannot use MAC addresses in communication.
True False |
False
TCP/IP networks can use MAC addresses in communication. However they do not efficiently route traffic on a large network or on the internet and can not provide information on physical or logical network configuration. |
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Although the base ____ numbering system seems foreign at first glance, largely due to the addition of letters, it really is an efficient way to express large numbers such as MAC and IPv6 addresses.
2 16 20 21 |
16
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____________________ broadcasts are broadcasts for any subnet and use the IP address 255.255.255.255.
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?
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____ is the version of IP currently deployed on most systems today.
IPX IP2 IPv6 IPv4 |
IPv4
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The allocation of network numbers based on CIDR has let to the depletion of IP addresses.
True False |
False
CIDR was developed to SLOW the exhaustion of IP addresses. |
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Briefly describe the hexadecimal numbering system.
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The hexadecimal system is a base 16 number system comprised of the numbers 0-9 and then transitioning to letters A-F to represent the numbers 10-15.
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Briefly describe Class C IP addresses.
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For medium to small sized companies, the Ip addressing ranges from 192-223 and has a basic subnet mask of 255.255.255.0.
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What are some reasons to incorporate subnetting into an organization’s network?
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to provide private IP ranges within the organization. Also to configure more or less hosts or subnets depending on organizational needs.
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The purpose of ____________________ is to allow many IP subnets to be advertised as one.
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Summarization
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____ is the most important layer 3 security protocol.
IPSec ARP DNS NAT |
Internet Security Protocol
(IPSec) |
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The ____ port allows a remote administrator to dial into the router through an external modem.
auxiliary console virtual terminal |
Auxiliary
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What are some of the types of interfaces in a Cisco router?
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Console, Auxiliray, Virtual terminals (VTY)
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How can you configure a router host name?
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config t (to enter global configuration mode) > then type hostname followed by the name that you want to use.
IE Router (config)# hostname router22 <Enter> |
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Routers operate at the Application layer of the OSI reference model.
True False |
False, they operate at the Network layer
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How can you configure a router’s banner?
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Must be in global configuration mode and then type banner motd followed by a space and then any delimiting character on the keyboard. Then the system will prompt you to enter the TEXT message and end your message with the set delimiter.
IE Router (config)# banner motd # Welcome to Router1! # |
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The system configuration dialog presents a series of prompts that guide you through the initial configuration for the router.
True False |
True
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When the prompt displayed is the greater than symbol, the router is in ____ EXEC mode.
privileged admin superuser user |
user
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You can access the system configuration dialog by typing the ____ command at the privileged EXEC prompt.
init config dialog setup |
setup
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The editing command ____ moves the cursor to the end of the current line.
Ctrl+E Ctrl+F Esc+B Esc+F |
Ctrl+E
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Describe the router’s ROM.
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loads the bootstrap program and initializes the routers basic hardware components
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You can configure a description for each of the interfaces physically attached to your router by using the ____ command.
banner description motd interface |
description
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To enter privileged EXEC, you can type the ____ command at the user mode prompt.
sudo setup enable privileged |
enable
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The content of ROM is maintained even when the router is rebooted.
True False |
True
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User mode does not allow you to configure the router. To do this, you must go into the ____ EXEC mode.
privileged config user router |
privileged
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Network administrators commonly configure and interact with a Cisco router via the Cisco ____________________.
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Internetwork Operating System (IOS)
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If you want to remove the enable secret password, you can type ____ at the global configuration mode prompt.
enable secret off enable off no enable secret no secret |
no enable secret
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In addition to the AUX and the console ports, you can use five virtual terminals (VTY) to configure a Cisco router.
True False |
True
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When entering the time zone, you must include the name of the time zone and the offset from the ____________________.
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Coordinated Universal Time (UTC) Otherwise known as Greenwich Mean Time
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During a POST, the bootstrap program, also called the ____________________, checks basic operations of the attached hardware, including CPU, memory, and interfaces.
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ROM Monitor
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Ping and Trace are available only from the user EXEC mode.
True False |
False
Ping and Trace are available from both User EXEC and privileged EXEC modes |
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A(n) ____ server is a computer, such as a PC, UNIX workstation, or laptop that is running TFTP server services.
Web TCP SSH TFTP |
TFTP
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Using CDP can help you quickly determine the network topology.
True False |
True
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Briefly describe the ROM Monitor mode.
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Also known as the bootstrap program, it checks basic operations of the attached hardware such as memory, CPU, and interfaces.
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____ in a router typically contains the power-on self-test (POST).
ROM RAM NVRAM Flash memory |
ROM
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You can use the ____ command in enable mode to retrieve the statistics that CDP will report on the local router’s interfaces.
show cdp running show cdp startup show cdp config show cdp interface |
show cdp interface
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You can examine the configuration register by typing ____ at either the enable mode or user mode prompt.
show configuration show reg show version show register |
show version
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Most types of computer equipment perform some type of POST immediately after being turned on.
True False |
True
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What are the replies return by a trace?
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!H: Indicates that a router recieved, but did not forward, the ICMP echo request
P: Protocol unreachable N: Network unreachable U: Port unreachable *: Request timed out |
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All Cisco devices, including routers, switches, and wireless access points, can use ____ to discover each other and learn about the configurations of other devices.
TFTP CDP ICMP Trace |
CDP
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To manually configure IP on an interface, you must first change to interface configuration mode. Then, you can use the ____ command to configure an IP address for the specific interface.
ip address int address ip interface interface address |
ip address
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What are the replies returned by Ping in a Cisco router?
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!: Successful reciept of the ICMP echo
.: Request timed out U: Destination was unreachable C: Congestion experienced I: Ping interrupted ?: Packet type unknown &: Packet TTL exceeded |
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The command ____ copies the configuration from the TFTP server to the startup configuration.
copy run start copy tftp running-config copy tftp startup-config copy start run |
copy tftp startup-config
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Trace sends multiple ICMP packets with progressively higher ______________________________ until the packet reaches the destination.
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Time to Live Counters (TTL)
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If you want to view the contents of the startup-config, you can type ____ at the enable prompt.
show config run startup-config show startup-config show rom-config |
show startup-config
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What are the options of the show cdp neighbors command?
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FastEthernet
Serial Detail |
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In the event you are configuring a serial interface as a DCE (data communication equipment), you will need to add the ____ [bandwidth in bits per second] command.
clockrate baud bbps baudrate |
clockrate
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If you want to disable CDP information from being sent on a given interface, change to the interface configuration mode prompt, and then issue the ____ command.
cdp enable off cdp off no cdp enable off cdp enable |
no cdp enable
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The command ____ indicates that you want to overwrite the existing NVRAM with the configuration information stored on the TFTP server.
configure memory configure overwrite-network copy tftp startup-config configure terminal |
configure overwrite-network
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The ____ command allows you to configure an administrative distance.
ip distance ip route adm distance adm route |
ip route
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____ are often referred to as count-to-infinity problems because loops, without preventive measures, will cause packets to bounce around the internetwork infinitely.
Hop loops Routing hops Routing loops Hop counts |
routing loops
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Briefly describe IGRP.
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Proprietary distance-vector routing protocol ceated by Cisco to solve some of the problems associated with RIP
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The Cisco ____ command turns on RIP routing for a network.
rip network routing rip rip ip on |
network (router rip is the correct command before setting network)
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____________________ are protocols used by routers to make path determination choices and to share those choices with other routers.
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Routing protocols
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Routers configured with a link-state routing protocol use ______________________________ to inform neighbor routers on the internetwork.
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Link State Advertisements (LSAs)
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Early networks were sometimes configured as ____________________ networks, in which computers communicate with and provide services to their “peers.”
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peer-to-peer
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___, which are the packets used to send out LSAs, allow every router in the internetwork to share a common view of the topology of the internetwork.
SPFs OSPFs EGPs LSPs |
Link state packets (LSPs)
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What are the metrics that can be configured for IGRP?
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Hops
Load Bandwidth Reliability Delay MTU |
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IPX/SPX can be routed across the Internet.
True False |
True
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The ____ command allows you to set the maximum hop count for IGRP.
metric maximum-hops igrp maximum-hops metric hops maximum-hops |
metric maximum-hops
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____ are very powerful, as they allow administrators complete control over path selection.
RIP routes Dynamic routes Static routes Stub routes |
Static Routes
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What are some of the drawbacks of using link-state routing protocols?
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more cpu power and memory usage, much more complicated to setup
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A(n) _________________________ is a group of routers under the control of a single administration.
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Autonomous system
(AS) |
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When IP routing is enabled, you can use the ____ command or the ip route 0.0.0.0 0.0.0.0 command to configure a default route.
ip default-network ip default ip network default ip default 0.0.0.0 |
ip default-network
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___ is a proprietary protocol suite developed by Novell.
NetBIOS NetBEUI IPX/SPX TCP/IP |
IPX/SPX
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What are some of the attributes of RIP?
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Distance vectoring
maximum hop count of 15 Hop count is only available metric load balancing easy to configure |
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How can you change a route administrative distance?
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using the ip route command (with the admin distance placed at the end of the entry.
IE router(config)# ip route 192.168.5.0 255.255.255.0 192.168.4.2 150 |
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NetBEUI cannot scale into large internetworks because it cannot hold Network layer information in its network header.
True False |
True
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