CSIS 331-B01

Which subnet would include the address 192.168.1.96 as a usable host address

192.168.1.64/26

the binary representation of 0xCA

11001010

How many usable IP addresses are available on the 192.168.1.0/27 network

30

What network service resolves the URL entered on a PC to the IP address of the destination server

DNS

Which switching method has the lowest level of latency

Fast-forward

default gateway

IP address used to reach distant networks

Which command can an administrator issue on a Cisco router to send debug messages to the vty lines

Terminal monitor

How does quality of service help a network support a wide range of applications and services

by providing mechanisms to manage congested network traffic

administrative distance of 1

default administrative distance of a static route

the show ip protocols command

displays the IPv4 routing protocol settings currently configured on the router

static routes

do not scale well in large networks

the passive-interface default command

prevents the forwarding of RIP updates out all interfaces

the passive-interface command

prevents the forwarding of RIP updates out of specified LAN interfaces

administrative distance of 1

the default administrative distance of a static route

S

the letter assigned to a static route in the routing table

C

the letter assigned to directly connected routes in the routing table

directly connected

the most "believable" or "trustworthy" route a router has

Border Gateway Protocol (BGP)

the routing protocol used between Internet service providers (ISPs)

Which procedure is used to reduce the effect of crosstalk in copper cables

twisting opposing circuit wire pairs together

DHCP and statically defined

two methods of assigning an IP address to a network host

Routing Protocols

used to facilitate the exchange of routing information between routers

What are the three ranges of IP addresses that can be reserved for internal private use

192.168.0.0/16 172.16.0.0/12 10.0.0/8

What method is used to manage contention-based access on a wireless network

CSMA/CA

At a minimum, which address is required on IPv6-enabled interfaces

Link-local

What unique address is embedded in an Ethernet NIC and used for communication on an Ethernet network

MAC address

What protocol is responsible for controlling the size of segments and the rate at which segments are exchanged between a web client and a web server

TCP

A network technician is attempting to configure an interface by entering the following command: R3(config)# ip address 192.168.2.1 255.255.255.0

The command is rejected by the device. What is the reason for this? the command is being entered from the wrong mode of operation

After making configuration changes on a Cisco switch, a network administrator issues a copy running-config startup-config command. What is the result of issuing this command

The new configuration will be loaded if the switch is restarted

the route source identified as an O

The route was learned dynamically from another router via the OSPF routing protocol.

the route source identified as an R

The route was learned dynamically from another router via the RIP routing protocol.

parent route

a Level 1 network route that is subnetted

ip route 0.0.0.0 0.0.0.0

a command to create a default static route

ip route 0.0.0.0 0.0.0.0 gig 0/1

a command to create an IPv4 default static route to use interface gig 0/1

ipv6 route ::/0 gig 0/1

a command to create an IPv6 default static route to use interface gig 0/1

ipv6 unicast-routing

a command to enable IPv6 on a router

show ip route

a command to show the IPv4 routing table

show ipv6 route

a command to show the IPv6 routing table

ultimate route

a route that has either a next-hop IPv4 address or an exit interface

Level 1 route

a route with a subnet mask equal to or less than the classful mask of the network address

Level 2 child route

a route with a subnet mask greater than the classful mask of the network address

default route

a route with the address 0.0.0.0/0

Which two commands can be used on a Windows host to display the routing table

netstart -r and route print

Why are port numbers included in the TCP header of a segment

to enable a receiving host to forward the data to the appropriate application

Privileged EXEC mode

*Accessed by entering the ENABLE command *Identified by prompt ending with the # character

Global configuration mode

*Changes made affect the operation of the device as a whole *Accessed by entering the CONFIGURE TERMINAL command

What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space is not to be wasted

255.255.255.192

supernet route

a route with a subnet mask less than the classful mask of the network address

network route

a route with subnet mask equal to that of the classful mask

default static route

a static route that matches all packets

outgoing interface

identifies the exit interface to use to forward a packet toward the final destination

floating static route

static routes that are used to provide a backup path to a primary static or dynamic route

banner, secure management access, and name

three configuration tasks that should always be performed for a new router

EIGRP, OSPF, IS-IS, and RIP

examples of dynamic routing protocols

in User EXEC mode you get

*Limited number of basic monitoring commands *The first entrance into the CLI of an IOS device

Which three factors could influence the differences in throughput?

*The amount of traffic that is currently crossing the network *The type of traffic that is crossing the network *The latency that is created by the number of network devices that the data is crossing

Under which two circumstances will a switch flood a frame out of every port except the port that the frame was received on

*The frame has the broadcast address as the destination address *The destination address is unknown to the switch

What are two characteristics of Ethernet MAC addresses

*They are expressed as 12 hexadecimal digits. *They are globally unique.

What are two ways that TCP uses the sequence numbers in a segment

*To identify missing segments at the destination *To reassemble the segments at the remote location

What are two characteristics shared by TCP and UDP

*use of checksum *port numbering

A network administrator wants to have the same subnet mask for three subnetworks at a small site. The site has the following networks and numbers of devices: Subnetwork A: IP phones - 10 addresses Subnetwork B: PCs - 8 addresses Subnetwork C: Printers - 2 addresses

.240

What is an example of a top-level domain

.com

Which networking model is being used when an author uploads 1 chapter document to a file server of a book publisher

Client/server

A wireless host needs to request an IP address. What protocol would be used to process the request

DHCP

Which two protocols operate at the highest layer of the TCP/IP protocol stack

DNS POP

Three main components of dynamic routing protocols

Data structures; Routing protocol messages ; Algorithm

The purpose of dynamic routing protocols

Discovery of remote networks; Maintaining up-to-date routing information; Choosing the best path to destination networks; Ability to find a new best path if the current path is no longer available

If a device receives an Ethernet frame of 60 bytes, what will it do

Drop the frame

What is one difference between the client-server and peer-to-peer network models

Every device in a peer-to-peer network can function as a client or a server.

What layer is responsible for routing messages through an internetwork in the TCP/IP model

Internet

What function does pressing the Tab key have when entering a command in IOS

It completes the remainder of a partially typed word in a command.

What purpose does NAT64 serve in IPv6

It converts IPv6 packets into IPv4 packets

What is a characteristic of the LLC sublayer

It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.

What is the purpose of the command ping ::1

It tests the internal configuration of an IPv6 host

What will a host on an Ethernet network do if it receives a frame with a destination MAC address that does not match its own MAC address

It will discard the frame.

Which service provides dynamic global IPv6 addressing to end devices without using a server that keeps a record of available IPv6 addresses

SLAAC

Which connection provides a secure CLI session with encryption to a Cisco switch

SSH connection

Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to the network

Segments are sent from the transport layer to the internet layer.

Which firewall feature is used to ensure that packets coming into a network are legitimate responses to requests initiated from internal hosts

Stateful packet inspection

What is one indication that a Windows computer did not receive an IPv4 address from a DHCP server

The computer receives an IP address that starts with 169.254

During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network

The physical address is added

the route source identified as an D

The route was learned dynamically from another router via the EIGRP routing protocol.

the route source identified as an S

The route was manually created by an administrator to reach a specific network.

The disadvantages of static routing

The routes are not easy to implement in a large network.; Managing the static configurations can become time consuming.; If a link fails, a static route cannot reroute traffic.

A statement about variable-length subnet masking

The size of each subnet may be different depending on requirements

TRUE

True or False: A fully specified static route includes both the exit interface and the next-hop.

On which switch interface would an administrator configure an IP address so that the switch can be managed remotely

VLAN 1

A company is expanding its business to other countries. All branch offices must remain connected to corporate headquarters at all times. Which network technology is required to support this requirement

WAN

the show ip route command

displays the RIP routes installed in the routing table

show ip interface brief

a command used to verify that the IPv4 interfaces are up and up

Router

a device that determines the best path to a remote network

administrative distance

a term used to describe the value assigned for the trustworthiness of the source of the route that is learned by a router

loopback

a type of interface not assigned to a physical port, and which is always up, and sometime used for testing

serial

a type of interface that needs the clock rate command

CEF

a type of packet forwarding mechanism that builds a FIB and adjacency table

flash

a type of router memory that commonly holds IOS

NVRAM

a type of router memory that holds saved configuration file

RAM

a type of router memory that holds the routing table and commands as they are entered

What are the three primary functions provided by Layer 2 data encapsulation

detection of errors through CRC calculations delimiting groups of bits into frames data link layer addressing

route timestamp

identifies from when the route was last heard

route source

identifies how the route was learned

next hop

identifies the IPv4 address of the next router to forward the packet to

Destination network

identifies the address of the remote network

administrative distance (AD)

identifies the trustworthiness of the route source

metric

identifies the value assigned to reach the remote network

summary static route

multiple static routes all using the same exit interface or next-hop IP address

What are two functions primary functions of a router

path selection packet forwarding

A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized

physical layer

the default-information originate command

propagates the configured static default route configured into routing protocol updates