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