دا اختبار ccna v4 سمستر 1
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علماً بانني لم اراجع بسبب المهندس الله يهديه اختبرنا تاني يوم بعد انتهاء السميستر واعادة اليوم اللي بعده وملحقتش اذاكر بردو وجبت 54 % والجهاز فصل باور معايا 3 مرات
ياريت ياجماعة تساعدوني على فهم الاسئلة وحلها بتوضيح على اد ماتقدرو لانه الانجليزي عندي ضعيف شوية
وجزاكم الله خير
1
In an attempt to verify connectivity, a user issues the ping command to a device that is not on the local network. The ping is unsuccessful. What can be determined from this result?
The default gateway is misconfigured.
The patch cable on the host station is faulty.
The router between the host and destination is faulty.
Further troubleshooting will be required to reach a definite conclusion.
2
What type of computer would most likely use a docking station?
laptop
server
desktop
mainframe
workstation
3
Which two automatic addressing assignments are supported by DHCP? (Choose two.)
local server address
subnet mask
default gateway address
physical address of the recipient
physical address of the sender
4
What advantage does a peer-to-peer network have over a client-server network?
It increases security.
It increases scalability.
It produces a higher performance for hosts.
It eliminates the need for centralized administration.
5
Which statement correctly describes the function of ARP?
ARP is used by the switches on the network to build their MAC tables.
ARP is used by the routers on the network to build their routing tables.
ARP is used by hosts to resolve a host name to an IP address for the destination host.
ARP is used by hosts to resolve an IP address to a MAC address for the destination host.
6
What destination IP address does a DHCP client use to send the initial DHCP Discover packet when looking for a DHCP server?
127.0.0.1
224.0.0.1
255.255.255.255
the IP address of the default gateway
8
Which troubleshooting technique can be used to quickly restore user functionality without having to spend much time identifying the exact problem?
top-down
bottom-up
substitution
trial and error
9
Which wireless protocol is used for encryption?
EAP
Open
PSK
WEP
11
What is a characteristic of Bluetooth wireless technology?
It allows one-to-many connections.
It operates in the 5GHz radio frequency band.
It is unable to penetrate walls with a useable signal.
It can be used for communications beyond 100 meters.
12
Which IP address type is intended for a specific host?
broadcast
multicast
simulcast
unicast
13
What is the default subnet mask for the IP address 128.107.23.10?
255.0.0.0
255.255.0.0
255.255.255.0
255.255.255.255
14
Which two causes of networking problems are related to the physical layer? (Choose two.)
damaged cables and connectors
incorrect addressing
incorrect subnet mask
overheated components
incorrect default gateway
15
How do ISPs obtain public IP addresses?
They create the addresses themselves.
They obtain the addresses from the home PCs.
They obtain the addresses from the Internet registry.
They obtain the addresses from the RFC.
16
Which two components are necessary for a wireless client to be installed on a WLAN? (Choose two.)
media
wireless NIC
custom adapter
crossover cable
wireless bridge
wireless client software
17
When are leased lines typically used?
when low bandwidth is required
for home and small business connectivity
when a dedicated digital data line is necessary
as a less expensive option to cable and DSL modem service
18
What is the purpose of pop-up blocker software?
It detects and removes spyware.
It detects and removes viruses.
It prevents the display of advertisement windows.
It removes unwanted e-mail.
19
What is a weakness of WEP that is solved by WPA?
WEP is a proprietary standard whereas WPA is an open standard.
WEP keys are only 64 bits long whereas WPA keys are 128 bits long.
WEP uses the same key for every connection whereas WPA uses a different key for each connection.
WEP uses a fixed length key for every connection whereas WPA uses a different key length for each connection.
20
What type of message is sent to a specific group of hosts?
static
unicast
dynamic
multicast
broadcast
21
A network administrator is setting up an application filtering firewall. Company security policy states that FTP sessions that are coming from the Internet and use the standard FTP port must be blocked. Which TCP/UDP port must the administrator block on the firewall to be in compliance?
21
23
53
80
22
What is the purpose of TCP?
to manage data links and physical network transmissions
to specify the format of requests and responses that are exchanged between the client and server
to assign the logical address and encapsulate the request into packets for routing to the destination
to provide flow control and acknowledgment of packets that are exchanged between the client and server
23
How does a crossover cable connect two routers?
It connects the pins that are used for receiving on one router to the pins that are used for receiving on the other router.
It connects the pins that are used for transmitting on one router to the pins that are used for receiving on the other router.
It disconnects the transmit pins and uses only the receive pins.
It uses the same pins for transmitting and receiving.
25
After attaching four PCs to the switch ports, configuring the SSID and setting authentication properties for a small office network, a technician successfully tests the connectivity of all PCs that are connected to the switch and WLAN. A firewall is then configured on the device prior to connecting it to the Internet. What type of network device includes all of the described features?
switch
ISR router
firewall appliance
standalone wireless access point
26
Which portion of a received datagram is decoded and used by the internetwork layer of the TCP/IP model?
IP address
port number
MAC address
HTML/user data
27
What is an advantage of selecting an operating system that has a GPL license over one with a commercial license?
The GPL license-based operating system ensures that everyone can participate in the enhancement of the product.
The GPL license-based operating system implements a structured development life cycle.
The GPL license-based operating system prevents modification of the source code.
The GPL license-based operating system provides structured support.
28
Which portion of the packet does a router use to forward the packet to the destination?
source IP address
user data
destination IP address
control information
destination MAC address
29
A college network administrator is planning a wireless LAN to provide service in the student lounge and outdoor patio. The requirements include a range of at least 80 meters and a speed of 30 Mb/s. Which wireless LAN standard meets these requirements?
802.11
802.11a
802.11b
802.11g
30
What is the function of CSMA/CA on a wireless Ethernet network?
to prevent collisions
to broadcast messages
to select the least congested channel
to establish an ACK between devices
31
What measurement is commonly used to describe communication speed when transferring data?
bps
cps
Hz
MB
32
How does a DMZ enhance network security for an organization?
blocks viruses and spyware
restricts internal user access to prohibited Internet sites
allows external customer access to designated internal resources
removes suspicious attachments from incoming and outgoing e-mail
33
What two commands can be used to form a new binding if client information does not agree with the DHCP client table? (Choose two.)
ipconfig /release
ipconfig /all
ipconfig /flushdns
ipconfig /renew
ipconfig
35
TCP/IP data transmission between the source and destination host is de-encapsulated in four steps:
A. The TCP header is removed.
B. Bits are decoded and the destination MAC address is recognized.
C. The IP header is removed and the contents are passed to the next layer.
D. The Ethernet header and trailer are removed.
What is the correct sequence of these steps?
A, B, C, D
A, C, B, D
B, C, D, A
B, D, C, A
C, A, B, D
36
Which three addresses belong to the category of private IP addresses? (Choose three.)
10.0.0.1
128.0.0.1
150.0.0.1
172.16.0.1
192.168.31.19
172.168.31.1
37
Which adapter card would be required for a PC to exchange information with other PCs on a LAN?
NIC
video card
sound card
internal modem
38
Which type of network attack occurs when an unauthorized person tries to persuade a user to share a network user ID and password?
brute force
denial of service
data manipulation
social engineering
39
Which network design layer provides hosts with initial connectivity to the network?
access
core
distribution
network
42
When would infrared be used to connect network devices?
when connecting multiple host devices to a wireless access point
when synchronizing a PC with a PDA that is in line of sight
when connecting a PC to a network switch that is located in another room
when updating two access points that are located in separate buildings
43
What are two characteristics of a MAC address? (Choose two.)
It indicates the physical location of the host within the network.
It is dynamically assigned by a DHCP server.
It is displayed in HEX characters.
It is a physical address.
It is cable-based.
45
A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used?
DSL
dial-up
satellite
cell modem
cable modem
46
What two pieces of information should a help desk technician document while troubleshooting connectivity issues with an end user? (Choose two.)
the CPU clock speed of the computer
the number of network jacks that are in the room
if the user can ping the default gateway address
if the word processing software is installed correctly
whether the PC uses dynamic or static IP addressing
47
What is an ISP?
It is a standards body that develops cabling and wiring standards for networking.
It is a protocol that establishes how computers within a local network communicate.
It is an organization that enables individuals and businesses to connect to the Internet.
It is a networking device that combines the functionality of several different networking devices in one.
48
What are two examples of peripheral output devices? (Choose two.)
barcode reader
digital camera
external DVD
headphones
printer
49
Which statement is true about packet filtering?
It recognizes and filters specific types of attacks.
It permits access based on IP address.
It is performed from a host network device.
It translates an internal address or group of addresses into a public address that is sent across the network.
51
Which service will translate private internal IP addresses into Internet routable public IP addresses?
ARP
DHCP
DNS
NAT
52
What is an advantage of purchasing a custom-built computer?
It is beneficial for less knowledgeable consumers.
The waiting period for assembly is negligible.
The cost is lower compared to a computer that has been preassembled.
The user can specify high-performance components to meet specific needs.
7
Refer to the exhibit. If H4 sends a message to H1 and the destination MAC address is in the MAC table for both Switch1 and Switch2, which host devices will receive the message?
only H1
hosts H1 and H4
all hosts that are connected to Switch1
all hosts that are connected to Switch1 and Switch2
10
Refer to the exhibit. Which option correctly represents the encapsulation of a packet that is sent by Host1 to the web server?
24
Refer to the exhibit. What is a possible reason that the PC is unable to ping the default gateway IP address?
The PC is on a different network than the default gateway.
A straight-through cable should be used to connect the switches.
A straight-through cable should be used to connect the PC to the switch.
Because the correct cable types are used for each segment, a bad cable could be the problem.
34
A user tries to open a page on the web server at www.cisco.com. The user’s workstation does not have the destination IP address in order to encapsulate the request. Which network topology will provide the services that are required to associate the name of the web server with an IP address?
40
Refer to the graphic. What is the purpose of assigning a Network Name of Academy?
It identifies the wireless LAN.
It translates IP addresses into easy-to-remember domain names.
It encrypts data between the wireless client and the access point.
It allows access to the AP configuration GUI by name rather than address.
It translates an internal address or group of addresses into an outside, public address.
41
Refer to the exhibit. Assume that the command output is from a wireless DHCP client that is connected to a Linksys integrated router. What can be deduced from the output?
The DHCP configuration on the router needs to be verified.
The WEP key or SSID needs to be verified.
The wireless connection is operational.
The wireless NIC driver or the NIC itself needs to be reinstalled.
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