Cisco Review for Final

What speed and duplex setting will result on a Catalyst Switch if it is set to auto-negotiate speed and duplex and is connected to a 100 Mbps port on a device that does not support auto-negotiation?

100 half duplex

what are the high order binary numbers that begin with a Class C address?

110

What range of addresses is referred to as link-local addresses?

169.254.0.0/16

Which three addresses are valid subnetwork addresses when 172.25.15.0/24 is further subnetted by borrowing an additional four bits ?

172.25.15.0 172.25.15.16 172.25.15.96

What is teh default subnet mask for the address 172.31.18.222?

255.255.0.0

What subnet mask is indicated by the network address 172.16.4.8/18

255.255.192.0

An ISP customer has obtained a Class C network address. The network tech needs to create five usbale subnets, with each subnet capable of containing at least 20 host addresses. What is the appropriate subnet mask to use?

255.255.255.224

When a network admin applies the subnet mask 255.255.255.248 to a Class B address for any given subnet, how many IP addresses are available to be assigned to devices?

6

What are two statements that describe the result of entering the: ip route 0.0.0.0.0.0.0.0 192.168.1.1 command on a router?

A default static route is added to the routing table. If a route to a destination network is not known, the packet is sent to 192.168.1.1

cable-containment system

A series of trays and straps used to guide and protect cable runs

Which term describes the ability of a web server to keep a log of the users who access the server, as well as the length of time they use it?

Accounting

An ISP is recommending a CISCO 1841 ISR to upgrade a small business customer LAN. Why is an ISR a good choice for a small business customer?

An ISR often costs less than a stand alone router and a LAN switch solution. ISRs combine routing, switching, and wireless capabilities in a single device.

What is an example of a routing protocol used to exchange information between autonomous systems?

BGP

Which network devices are used in the internet to route traffic between autonomous systems?

Border Gateway routers

Vertical Cable

Cable from IDF to MDF in the organization's backbone area

Horizontal Cable

Cable from the wall plate to the IDF in the distribution area.

Show interfaces

Checks to see that the interfaces are up and operational

Which method can be used to configure a Cisco Catalyst Switch before an IP address has been applied to the management interface?

Cisco IOS CLI using console port.

What is the function provided by Tier 3 Internet Service Providers?

Connects individuals and small businesses to the internet.

What are three advantages of NAT?

Conserves registered public IP addresses. Hides private LAN addressing from the Internet. Permits LAN expansion without additional public IP addresses.

When configuring an ISR device using Cisco SDM Express Wizard, what does setting the Enable Secret Password field accomplish?

Controls Access to privileged mode.

Which three application-layer protocols use UDP as the transport protocol?

DNS SNMP TFTP

Within FTP, which connection type closes automatically when the file transfer is complete?

Data transfer process

A network engineer is configuring a new router. The interfaces have been configured with IP addresses but no routing prtocols or static routes have been configured yet. What routes are present in the routing table?

Direct connections

Which two actions should be taken after a customer problem is resolved by the ISP help desk?

Document the solution in the trouble ticket or work order. Copy the solution into a knowledge-base document for future reference.

What makes it possible for email to be sent and received on a wide variety of devices, including cell phones, PDA's, laptop and desktop computers?

Email software is written using standards and protocols that ensure compatibility.

Used to change router modes or sub-modes

Enable Configure Terminal Interface FastEthernet 0/0

What are two methods used to allow remote networkds to be added to a routing table?

Entered by an administrator Learned through a routing protocol

What are common causes of physical network connectivity problems?

Ethernet cable plugged into wrong port. Faulty Ethernet Cable

An IP packet arrives at a server addressed to TCP port 21. Which application-layer service is the destination of this packet?

FTP

The CEO of Quickclips, INC. decides that the company's backup process needs to allow for a very quick restoration of lost data. He is willing to accept a lengthier time for the back up process itself. Which type of backup should be implemented?

FULL

What DNS zone resolves fully qualified domain names to IP addresses using a local DNS server?

Forward Lookup

Which type of wide area network (WAN) connection uses packet switched networks?

Frame Relay

Where does the router get information about the best path to send a packet destined for a host located on a remote network?

From the routing table stored in RAM

What is the "principle of least privilege"?

Give each user access to only those resources needed to do his/her job.

What are two characteristics of a scalable network?

Grows in size without impacting existing users. Contains modular devices that allow for expansion

TCP

Guaranteed delivery Breaks data into segments retransmits lost data

A small company with two offices in the same building is requesting advice on WAN connections. Which two questions would give a tech information to base a recommendation?

How much money has the customer budgeted to spend on the WAN connection? Are the company web servers located in the building or at the ISP?

Which two protocols define how an e-mail client retrieves mail from the server?

IMAP SMTP

Network Layer

IP address Routing

What is the function of the planning and provisioning team within the ISP organization?

Identifying whether existing network hardware and circuits are available

Where would the on-site tech record information about the brand, model, and operating system of the hosts and networking devices installed on the network?

Inventory Sheet

What three types of network documentation does a tech need to complete before designing a new network?

Inventory Sheet, Site survey report, topology maps

Using a systematic troubleshooting approach, a help desk technician suspects a problem at Layer 4 of the OSI model. What two questions could be asked to isolate the problem to layer 3?

Is your PC configured for DHCP? Can you ping your default gateway?

Which two statements describe the command history feature?

It displays the most recently entered command strings in the current mode. It can be accessed by using the up and down arrow keys.

What is the purpose of the network command used in the configuration of the RIP routing protocol?

It specifies which interfaces will exchange RIP routing updates.

Which two are characteristics of horizontal cabling?

It terminates at the face plate in teh user work area. It terminates at a patch panel in the IDF and MDF.

What tasks are completed by routing protocols?

Learning the available routes to all destinations. Placing the best route in teh routing table Removing routes from the routing table when they are no longer valid.

Data Link Layer

Mac Addresses Switching

Which connectivity option would be a good choice for a large university with three campus locations in the same major city?

Metro Ethernet

Which layer of the four-layer TCP/IP model encapsulates datagrams for transmission on physical media?

Network access

Where is the safest place to store backups?

Offsite secure facility

An e-mail client connection downloads all messages and then deletes them from the e-mail server. Which type of client connection does this by default?

POP3

Transport Layer

Packages data in segments for transmission, Uses UDP for realtime data streaming, adds port numbers

Router Bootup process

Perform POST Load the bootstrap program locate the IOS load the IOS locate the configuration file load the configuration file/enter setup mode.

When using Cisco SDM, which WAN encapsulation type can be configured to require a username and password before connection is grated?

Point-to-Point protocol (PPP)

Which router mode displays a prompt of Router#?

Privileged EXEC mode

Which three steps must be completed before implementation of the new network can begin?

Prototypes are created and tested. An analysis report is generated. The design is approved by the customer.

A customer call has been escalated to an on-site technician because the level 1 and 2 technicians could not determine the problem. Which three tasks would be performed by the on-site technician?

Replace faulty cables or connections. Correct PC network settings and run any necessary utilities Swap out suspected faulty hardware with good known hardware.

What two are duties of an SNMP management agent?

Reports to the management station by responding to polls. Sends an alert message to the management station if a threshold is exceeded.

What should the on-site tech do immediately after completing the site survey?

Review the survey results with the customer to ensure accuracy

What two tasks should an on-site tech perform before beginning any troubleshooting or repair at the customer site?

Review trouble ticket with the customer to verify the information is correct. Provide Identification, including name and place of employment

Authorization

Rights to a specific network resource.

Host A is configured with IP address 192.168.75.34 and Host B is cfonfigured with IP address 192.168.75.50. Each are using the same subnet mask of 255.255.255.240 but are not able to ping each other. What networking device is needed for these hosts to communicate?

Router

Network Layer

Routes packets between networks, encapsulates data in packets for transmission, adds IP addresses to data packets.

What is a secure way that a client can connect to a device in-band for the purpose of remote monitoring and administration?

SSH

A new network is to be configured on a router. Which tasks must be completed to configure this interface and implement dynamic IP routing for the new network?

Select the routing protocol to be configured Assign an IP address and subnet mask to the interface Configure the routing protocol with the new network IP address.

Patch Cable

Short cable from the computer to the wall plate in the user work area.

What command can an administrator issue to find the filename of the IOS that is currently running before backing up the IOS to a TFTP server?

Show Flash

Used by administrator to verify or monitor router operation?

Show interfaces Show Ip route ping

Why is it important to consider the size of failure domains when upgrading a network?

Small failure domains reduce the number of users affected when a network device malfunctions.

Why is it important for the source and destination hosts to synchronize sequence numbers during the TCP three-way handshake?

So both hosts can keep track of the segments sent and acknowledged. To identify lost segments that must be retransmitted.

Which firewall filtering technology keeps track of the actual communication process occurring between the source and destination devices and stores it in a table?

Stateful Filtering

What concept is used to reduce router table complexity by aggregating multiple network addresses?

Supernetting

Why do small businesses and individuals choose DSL and cable connectivity instead of T3 connections?

T3 connections are usually more expensive than DSL or cable options.

What is one fundamental difference between Cisco's CLI versus the SDM interface?

The CLI interface can be used with both in-band and out-of-band management.

When MPLS is configured on a router, what is true about the MTU?

The MTU size on a LAN interface must be manually increased using the mpls mtu command.

What does a successful ping response from teh 127.0.0.1 loopback address on a host indicate?

The TCP/IP stack loaded correctly.

A customer router is configured to use BGP to exchange routes with a directly connected neighbor router. What is identified by the remote AS number in the command : neighbor 209.165.201.1 remote-as 200?

The directly connected router AS number.

While downloading an IOS image from a TFTP server, an admin sees long strings of the letter 'e' output to the console. What does this mean?

The router is erasing the flash memory.

What two pieces of information can be derived from the IP address 192.168.42.135/24?

This is a Class C address because the high order bits are 110. The default subnet mask is 255.255.255.0

In which two cases would out-of-band management of a router be required?

To access and configure the router before the IP network is operational. To correct an error that has shutdown the network interfaces on a router.

What is the purpose of assigning an IP address to the interface VLAN1 on the cisco switch?

To be able to to telnet the switch to manage and configure it.

Why do multiple ISP's connect to an IXP or a NAP?

To gain access to each other's networks. To access the internet backbone

Why would a managed-service customer want to have an SLA with the ISP?

To have a written agreement of what services the ISP will provide.

When designing a structured cable project, why is it important to obtain an accurate floor plan?

To identify possible wiring closet locations. To avoid areas with electrical equipment or wiring. To estimate how much cable will be required.

A network administrator can successfully ping the server at www.cisco.com, but cannot ping the company web server located at the ISP in another city. Which tool or command would help identify the specific router where the packet was lost or delayed?

Traceroute

What two statements are true about transit traffic?

Transit traffic can overload an internet router. Transit traffic travels through an AS to reach a remote AS.

Physical Layer

Twisted Pair Cable Repeaters

What are two characteristics of interior routers?

Use IGP routing protocols Exchange local routes.

Two statements that describe out-of-band network management?

Used for initial device configuration uses a direct console connection

Authentication

Username and password

What are two common DNS lookup methods?

Using ISP-caching DNS servers Using a DNS server located on company premises.

Show ip protocols

Verifies the routing protocol process running and that the correct networks are advertised.

Accounting

Who used what network resource

Show running-config

displays current configuration information for configured routing protocols and interfaces

Debug ip rip

displays the networks advertised in the updates as the updates are sent and received.

UDP

does not require acknowledgments connectionless unreliable

Affects the operation of the network?

no shutdown ip address 172.16.1.1 255.255.255.0

Show ip route

verifies that routes received are installed in the routing table