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CCNA 1 Final part 1
What are two services provided by the OSI network layer
91
CCNA 1 Final part 1
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1
91
show mac-address-table
Show interfaces
show ip interface brief
show running-config
2
What are two services provided by the OSI network layer
routing packets towards the destination
Performing error detection
placement of frames on the media
encapsulation PDUs from the transport layer
3
Which two OSI model layers have the same functionality as two layers of the TCP/IP model?
Physical
Network
Data link
Transport
4
Which statement is true about variable length subnet masking?
Each subnet is the same size
Subnets may only be subnetted one additional time
Bits are returned, rather than borrowed, to create additional subnets
The size of each subnet may be different, depending on the requirements
5
During encapsulation process, what occurs at the DLL for a PC connected by ethernet?
Physical Address is added
Logical Address is added
An IP address is added.
Process port number is added
6
placeholder for question 11
The administrator will be required to enter Cisco 234
The administrator will be required to enter Cisco123
The administrator will be presented with the R1> prompt
The administrator will be required to enter Cisco789
7
What are 3 characteristics of an SVI
It's associated with VLAN1 by default
It's not associated with any physical interface on the switch.
It provides a means to remotely manage a switch.
It is designed as a security protocol to protect switch ports
8
On the basis of the output, which two statements about network connectivity are correct?
This host does not have a default gateway configured.
There is connectivity between this device and the device at 192.168.100.1
The connectivity between these two hosts allow for videoconferencing calls
There are 4 hops between this device and 192.168.100.1
9
63
audio conference, web page, financial transactions
Audio conference, financial transactions, webpage
financial transactions, audio conference, web page
financial transactions, web page, audio conference
10
What are two benefits of using a layered network model?
It prevents designers from creating their own model
It speeds up packet delivery
It assists in protocol design
It prevents technology in one layer from affecting other layers
11
What is the purpose of the command ping ::1
It tests the reachability of the default gateway for the network.
It tests the broadcast capability of all hosts on the subnet
It tests the internal configuraiton of an IPv6 host
It tests the multicast connectivity to all hosts on the subnet
12
Why does a layer 3 device perform the ANDing process on a destination IP address and subnet mask?
To identify the network address of the destination network.
To identify faulty frames
To identify the broadcast address of the destination network.
To identify the host address of the destination host.
13
A network team is comparing WAN topologies for connecting sites. Which top. provides high avail. and connects some site
Mesh
Hub and spoke
point to point
Partial Mesh
14
Admin is troubleshooting connectivity. Signals generated by server NIC are distorted. Which layer of OSI is this?
Network Layer
Presentation Layer
Data Link Layer
Physical Layer
15
A company is expanding its business. All branch offices must remain connected HQ. What's the best tech to support this?
MAN
WLAN
WAN
LAN
16
What are two benefits of using a layered network model?
It assists in protocol design
It prevents technology in one layer from affecting other layers.
It speeds up packet delivery
It prevents designers from creating their own model.
17
What is a key characteristic of the peer-to-peer networking model?
Wireless networking
Social networking w/o the internet
Network printing using a print server
Resource sharing without a dedicated server
18
What is the process of dividing a data stream into smaller pieces before transmission?
Flow control
Encoding
Encapsulation
Segmentation
19
49
192.168.10.0
192.168.10.192
192.168.10.224
192.168.10.128
20
What is the binary representation of 0xCA
11011010
10111010
11001010
11010101
21
87
Accessibility
Scalability
Reliability
Quality of service
22
What are two actions performed by a cisco switch?
forwarding frames with unknown destination IP addresses to the def gateway
Using the source MAC addresses of frames to build and maintain a MAC table
Building a routing table that is based on the first IP address in the frame
Utilizing the MAC address table to forward frames via the destination MAC
23
Whats the purpose of having a converged network?
To provide high speed connectivity to all end devices
To achieve fault tolerance and high avail. of data network comm. infrastr.
To make sure that all types of data packets will be treated equally
To reduce cost of deploying and maintaining the comm. infrastructure.
24
What network service resolves the URL entered on a PC to the IP address of the destination server?
DHCP
FTP
SNMP
DNS
25
What are two examples of the cut thru switching method (2 answers)
Fast Forward Switching
Fragment Free Switching
CRC Switching
Store + Forward Switching
26
89
Dial up
DSL
Cell modem
Satellite
27
What purpose does NAT64 serve in IPv6?
It converts the regular IPv6 addresses into 64 bit addresses used on intrnt
It enables companies to use IPv6 unique local addresses in the network
It converts IPv6 packets into IPv4 packets.
It translates private IPv6 addresses into public IPv6 addresses
28
Why are port numbers included in the TCP header of a segment
To identify which switch ports should receive or fwd the segment
to enable a receiving host to forward the data to the appropriate app
To indicate the correct router interface that should be used to forward seg
To allow the receiving host to assemble the packet in the proper order
29
What are 3 characteristics of a multicast transmission?
Computers use multicast transmission to request IPv4 addresses.
A single packet can be sent to a group of hosts
Routers wont fwd multicast addresses in range of 224.0.0.0 to 224.0.0.255
Multicast transmissions can be used by routers to exchange routing info
30
What are two characteristics of Ethernet MAC addresses?
Expressed as 12 hexadecimal digits
Globally unique
Routable on the internet
MAC addresses use a flexible hierarchical structure
31
A technician can ping an IP but can't ping the URL address. What can the technician use to diagnose the problem?
Ipconfig
tracert
Nslookup
Netstat
32
92
The banner message is too long
The symbol "!" signals the end of a banner message
The delimiting character appears in the banner message
Message of the day banners only appear when a user logs in thru console por
33
How does quality of service help a network support a wide range of applications and services
Allowing quick recovery from network failures
Limiting the impact of a network failure
Providing the ability for the network to grow to accommodate new users
Providing mechanism to manage congested network traffic
34
A wireless host needs to request an IP address. What protocol would be used to process the request?
FTP
DHCP
ICMP
HTTP
35
What unique address is embedded in an ethernet NIC and used for communication on an ethernet network
MAC address
host address
network address
IP address
36
Which range of link-local addresses can be assigned to an ipv6 enabled interface?
FE80::/10
FF00::/8
FEC0::/10
FDEE::/7
37
What addresses are mapped by ARP
destination MAC address to the source IPv4 address
Destination IPv4 address to the source MAC address
Destination IPv4 address to the destination host name
Destination MAC address to a destination IPv4 address
38
Which networking model is being used when an author uploads one chapter document to a file server of a book publisher?
master-slave
client/server
P2P
point to point
39
A PC obtains its IP Address from a DHCP Server. If the PC is taken off the network for repair, what happens to the IP?
Address is returned by the pool for reuse when the lease expires
Address is permanent and nothing changes
Address is held by the server to be reissued when the PC is returned
Address lease is automatically renewed until the PC is returned.
40
What is a benefit of using cloud computing in a network?
tech is integrated into everyday appliances allowing them to interconnect
Home networking uses existing electrical wiring to connect devicesto outlet
Network capabilities w/o req. investment in new infra., personnel, or softw
End users have freedom to use personal tools to access new infrastructure
41
What is the most compressed version of 2001:0000:0000:abcd:0000:0000:0000:00001
2001:0:abcd::1
2001:0000:abcd::1
2001:0:0:abcd::1
2001::abcd::1
42
What source IP address does a router use by default when the traceroute command is issued?
the highest configured IP address on the router
The lowest configured IP address on the router
a loopback IP address
The IP address of the outbound interface
43
What is the dotted decimal representation of 11001011.00000000.01110001.11010011
198.51.100.201
192.0.2.199
209.165.201.223
203.0.113.211
44
Med Sized bsns is researching avail options for connecting to internet: high speed, W/ Dedicated sym. access whats best?
Leased Line
DSL
Cable
Satellite
45
15
physical switchport access
Telnet access
password encryption
SVI
46
Which two protocols operate at the highest layer of the TCP/IP protocol stack
Ethernet
DNS
POP
IP
47
Which two commands can be used on a Windows host to display the routing table? (Choose two.)
netstat -t
show ip route
netstat -r
route print
48
59
DNS address
Subnet mask
Default gateway address
Host IP address
49
What are two characteristics of fiber optic cables?
It typically contains 4 pairs of fiber optic-wires
It is not affected by EMI or RFI
It combines the technique of cancellation, shielding, and twisting
It is more expensive than UTP cabling is
50
Which frame fwding method receives the entire frame and performs a CRC check 2 detect errors before forwarding the frame
Cut through forwarding
Store and forward switching
fast forward switching
Fragment free switching
51
What is a characteristic of a fault tolerant network?
A network that recovers quickly when a failure occurs + depends on redundan
A network that protects confidential information from unauthorized access
Supports a mechanism for managing congestion & reliable delivery
A network that can expand quickly w/o affecting current users
52
Which connection provides a secure CLI session w/ encryption to a cisco switch
Console
Telnet
AUX
SSH
53
Which type of UTP cable is used to connect a PC to a switch port?
Crossover
Console
Straight-through
Rollover
54
Subnet A: 10 hosts. Subnet B: 8 hosts. Subnet C: 2 hosts. Best subnet mask for the three networks?
255.255.255.240
255.255.255.252
255.255.255.248
255.255.255.0
55
When planning for network growth, where in the network should packet captures take place to assess network traffic?
only on the busiest network segment
Between hosts and the default gateway
On as many different network segments as possible
Only at the edge of the network
56
What are the three primary functions provided by layer 2 data encapsulation?
data link layer addressing
Error correction thru a collision detection method
Detection of errors thru CRC calculations
delimiting groups of bits into frames
57
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
Only in the client server model can file transfer occur
A p2p network transfers data faster than a transfer using a client server
A data transfer that uses a device serving a client role requires dedserver
58
How many valid host address are available on an IPv4 subnet that is configured with a /26 mask
192
254
62
190
59
Which two functions are primary functions of a router?
Domain name resolution
Microsegmentation
Path selection
Packet forwarding
60
Under which two circumstances will a switch flood a frame out of every port except the port that the frame was received
The frame has the broadcast address as the destination address
The source address in the frame header is the broadcast address
The destination address is unknown on the switch
The source address in the frame is a multicast address
61
How many IPv4 addresses are available to be assigned to hosts on a network that has a mask of 255.255.255.248
6
14
2
8
62
Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to a network?
Frames are sent from the network access layer to the internet layer.
Data is sent from the internet layer to the network access layer
Packets are sent from the network access layer to the transport layer.
Segments are sent from the transport layer to the internet layer.
63
What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space isn't to be wasted
255.255.255.128
255.255.255.224
255.255.255.0
255.255.255.192
64
What are two ways that TCP uses the sequence number in a segment?
To identify missing segments at the destination
To specify the order in which segments travel from src to dest
To reassemble the segments at the remote location
To limit the number of segments that can be sent at once
65
What layer is responsible for routing messages through an internetwork in the TCP/IP model?
Network access
Internet
Session
Transport
66
What will a host on an ethernet network do if it receives a frame with a dest MAC that doesn't match its own?
It will discard the frame.
It will strip off the data link frame to check the destination IP address
It will forward the frame to the next host.
It will remove the frame from the media.
67
What is a characteristic of UTP cabling?
cancellation
cladding
immunity to electrical hazards
woven copper braid or metallic foil
68
What is an advantage to using a protocol that is defined by an open standard
A company can monopolize the market
The protocol can only be run on equipment from a specific vendor
It encourages competition and promotes choice
An open standard protocol is not controlled or regulated by standards orgs
69
How many usable IP addresses are available on the 192.168.1.0/27 network?
30
16
254
256
70
At a minimum, which address is required on IPv6 enabled interfaces?
unique local
link-local
site local
global unicast
71
100
TCP/IP protocol stack
Default gateway
DHCP
DNS
72
What is a characteristic of the LLC sublayer
It provides the logical address required that identifies the device.
places info in the frame allowing multiple L3 protocols touse samemedia/int
It defines the software process that provide services to the physical layer
It provides delimination of data accrding to the physical signalling req.
73
What are 3 ranges of IP addresses that are reserved for internal private use?
192.168.0.0/16
10.0.0.0/8
64.100.0.0/14
172.16.0.0/12
74
Which command can an admin issue on a cisco router to send debug messages to the vty lines?
logging console
logging buffered
logging synchronous
terminal monitor
75
Which two tasks are functions of the presentation layer?
Compression
addressing
session control
encryption
76
What method is used to manage contention-based access on a wireless network?
priority ordering
CSMA/CD
Token passing
CSMA/CA
77
What is a characteristic of multicast messages?
They must be ACK
They are sent to a select group of hosts.
They are sent to all hosts on a network.
they are sent to a single destination.
78
What protocol is responsible for controlling the size of segments and rate segments are exchanged between client/server?
HTTP
TCP
Ethernet
IP
79
Which name is assigned to the transport layer PDU?
Bits
Data
Segment
Frame
80
Which service provides dynamic global IPv6 addressing to end devices w/o using a server that keeps records available?
stateless DHCPv6
SLAAC
Stateful DHCPv6
static IPv6 addressing
81
In computer communication, what is the purpose of message encoding?
To interpret information
To negotiate correct timing for successful communication.
To convert information to the appropriate form for transmission.
To break large messages into smaller frames.
82
Which example of malicious code would be classified as a trojan horse?
Malware that attaches itself to a legit program and spreads to others when
Malware that requires manual intervention to spread
malware that can automatically spread from one system to another
Malware that was written to look like a video game
83
Admin is measuring transfer of bits. Network thruput is lower than expect. 3 factors could influence diff in thruput?
Type of traffic that is crossing the network
Amount of traffic that is currently crossing the network
Latency that is created by the number of devices that data is crossing
Sophistication of the encapsulation method applied to data
84
Which procedure is used to reduce the effect of crosstalk in copper cables?
Twisting the opposite circuit wire pairs together.
Requiring proper grounding connections
Wrapping the bundle of wires with metallic shielding
Designing a cable infrastructure to avoid crosstalk interference.
85
Which password is needed to access user EXEC mode?
Letmein
Lineconin
linevtyin
Secretin
86
Which firewall feature is used to ensure that packets coming into a network are legit responses to req. initiatedbyhost
URL Filtering
Stateful Packet Inspection
Packet Filtering
Application Filtering
87
What are two functions of NVRAM
To store the startup configuration file
To store the routing table
To retain contents when power is removed
to store the arp table
88
What is the function of the shell in an OS
it interfaces between the users and the kernel
It provides the intrusion protection services for the device.
It interacts with the device hardware
It provides dedicated firewall services
89
On which switch interface would an admin configure an IP address so that the switch can be managed remotely?
console 0
VLAN 1
FastEthernet0/1
vty 0
90
When applied to a router, which command would help mitigate brute-force password attacks against the router?
banner motd $Max failed logins =5$
exec-timeout 30
service password-encryption
login block-for 60 attempts 5 within 60
91
An administrator is testing connectivity to a remote device with the IP address 10.1.1.1. What does the output of
Connectivity to the remote device was succesful
A router along the path did not have a route to the destination
The connection timed out while waiting for a reply from the remote device
A ping packet is being blocked by a security device along a path
92
94
255.255.255.128
255.255.255.240
255.255.255.224
255.255.255.0
93
If administrator has already logged into a Telnet session, which password is needed to access privileged EXEC mode?
Lineconin
Secretin
Letmein
linevtyin
94
Which subnet would include the address 192.168.1.96 as a usable host address
192.168.1.32/27
192.168.1.32/28
192.168.1.64/29
192.168.1.64/26
95
SanJose(config)# ip address 192.168.2.1 255.255.255.0 is rejected. Why?
Command is being entered from the wrong mode of operation.
Subnet info is wrong.
Interface is shutdown and must be enabled before the switch will accept
Command syntax is wrong.
96
Which scenario describes a function provided by the transport layer?
A student is playing a short web-based movie with sound
A student has two web browser windows open in order to access two web sites
A corporate worker is accessing a web server located on a corporate network
A student is using a classroom VoIP phone to call home.
97
If a device receives a frame of 60 bytes what will it do?
send and error message to the sending device
process the frame as is
add random data bytes to make it 64 bytes long then forward it
Drop the frame
98
That is the TCP mechanism used in congestion avoidance
Three way handshake
sliding window
Socket pair
two way handshake
99
In what two situations would UDP be the preferred transport protocol over TCP? (Choose two.)
when applications need to guarantee that a packet arrives intact,
when a faster delivery mechanism is needed
When applications do not need to guarantee delivery of data.
When delivery overhead is not an issue
100
If host A sends an IP packet to host B, what will the destination address be in the frame when it leaves host A?
DD:DD:DD:DD:DD:DD
CC:CC:CC:CC:CC:CC
BB:BB:BB:BB:BB:BB
AA:AA:AA:AA:AA:AA
