Font size
WorksheetsCCST - Networking
Total questions: 45
Worksheet time: 39mins
Which is a characteristic of the network SSID?
It is encrypted by default.
It is case sensitive.
It contains exactly 16 characters.
It is only required for guest access.
What is the function of the SSID on a wireless network?
It identifies the wireless protocol in use.
It contains the password required to join the network.
It identifies the wireless standard required to join the network.
It identifies the WLAN in use on the network.
What is the purpose of protocols in data communications?
specifying the device operating systems that will support the communication
dictating the content of the message sent during communication
specifying the bandwidth of the channel or medium for each type of communication
providing the rules required for a specific type of communication to occur
Which two functions are primary functions of a router? (Choose two.)
packet forwarding
domain name resolution
MAC address assignment
path selection
What three blocks of addresses are defined by RFC 1918 for private network use? (Choose three.)
172.16.0.0/12
169.254.0.0/16
192.168.0.0/16
10.0.0.0/8
100.64.0.0/14
Consider the group of five IPv4 addresses each with the subnet mask of 255.255.255.0. Which two IPv4 addresses belong to the same local network? (Choose two.)
192.168.10.2
193.168.10.16
192.167.10.74
192.168.10.56
192.168.100.62
Which IPv6 address notation is valid?
2001:0DB8::ABCD::1234
2001::ABCD::
ABCD:160D::4GAB:FFAB
2001:DB8:0:1111::200
When IPv4 is configured for a computer on a network, what does the subnet mask identify?
the dynamic subnetwork configuration
the device that the computer uses to access another network
the part of the IP address that identifies the network
the pool of addresses assigned within the network
What is one difference between a switch and a router?
A router creates smaller broadcast domains, and a switch extends the size of a broadcast domain.
A router provides segmentation at Layer 2, and a switch provides segmentation at Layer 3.
A router uses a routing table to store information about destination host IP addresses, and a switch uses an ARP table to store information about destination host MAC addresses.
A router propagates broadcast messages, and a switch does not propagate broadcast messages.
What is a benefit of adding a router within an IP network?
reduces the number of hosts that can connect to the network
increases the size of the local network
controls host-to-host traffic within a single local network
keeps broadcasts contained within a local network
A new employee is attempting to configure a cell phone to connect to the email server of the company. Which port number should be selected when using the IMAP4 protocol to access email messages stored on the local server?
143
25
110
69
An employee of a large corporation remotely logs into the company using the appropriate username and password. The employee is attending an important video conference with a customer concerning a large sale. It is important for the video quality to be excellent during the meeting. The employee is unaware that after a successful login, the connection to the company ISP failed. The secondary connection, however, activated within seconds. The disruption was not noticed by the employee or other employees.
What three network characteristics are described in this scenario? (Choose three.)
powerline networking
scalability
security
fault tolerance
quality of service
Which three statements describe the functions of the Cisco hierarchical network design model? (Choose three.)
Route summarization is not necessary at the core and distribution layers.
The core layer usually employs a star topology.
The goal of the core layer is maximizing throughput.
The distribution layer is responsible for traffic filtering and isolating failures from the core.
The access layer provides a means of connecting end devices to the network.
PC1 sends a frame with the destination MAC address 3c97.0e07.a1b2. Switch S1 looks up the destination MAC address in its CAM table but the address is not there. What will the switch do?
It willl add the destination MAC address to the CAM table.
It will forward the frame out all ports except Fa0/1.
It will send a destination unreachable message back to PC1.
The switch will drop the frame.
It will forward the frame out port Fa0/2 towards the router.
Host A has sent a packet to host B. What will be the source MAC and IP addresses on the packet when it arrives at host B?
Source MAC: 00E0.FE91.7799
Source IP: 10.1.1.10
Source MAC: 00E0.FE10.17A3
Source IP: 10.1.1.10
Source MAC: 00E0.FE10.17A3
Source IP: 192.168.1.1
Source MAC: 00E0.FE91.7799
Source IP: 10.1.1.1
Source MAC: 00E0.FE91.7799
Source IP: 192.168.1.1
What is the dotted decimal representation of the IPv4 address 11001011.00000000.01110001.11010011?
203.0.113.211
209.165.201.223
192.0.2.199
198.51.100.201
Which statement is true regarding the UDP client process during a session with a server?
Application servers have to use port numbers above 1024 in order to be UDP capable.
A three-way handshake takes place before the transmission of data begins.
Datagrams that arrive in a different order than that in which they were sent are not placed in order.
A session must be established before datagrams can be exchanged.
A home network has both wired and wireless connectivity. From a laptop computer, the user issues a ping to the wireless printer located in another room. The first two echo requests fail, but the last two succeed. Additional pings are all successful. Why do the first two echo requests fail?
The distance between the computer and the printer causes delay on the first two pings.
The computer and the printer must join the wireless network first and that process takes time.
The computer must use ARP to obtain the MAC address of the printer and this process takes time
The wireless printer must be activated and that takes time.
What are two potential network problems that can result from ARP operation? (Choose two.)
On large networks with low bandwidth, multiple ARP broadcasts could cause data communication delays.
Multiple ARP replies result in the switch MAC address table containing entries that match the MAC addresses of hosts that are connected to the relevant switch port.
Large numbers of ARP request broadcasts could cause the host MAC address table to overflow and prevent the host from communicating on the network.
Manually configuring static ARP associations could facilitate ARP poisoning or MAC address spoofing.
Network attackers could manipulate MAC address and IP address mappings in ARP messages with the intent of intercepting network traffic.
How do hosts ensure that their packets are directed to the correct network destination?
They search in their own local routing table for a route to the network destination address and pass this information to the default gateway.
They send a query packet to the default gateway asking for the best route.
They always direct their packets to the default gateway, which will be responsible for the packet delivery.
They have to keep their own local routing table that contains a route to the loopback interface, a local network route, and a remote default route.
A user is complaining that an external web page is taking longer than normal to load.The web page does eventually load on the user machine. Which tool should the technician use with administrator privileges in order to locate where the issue is in the network?
ipconfig /displaydns
ping
nslookup
tracert
Local workstations are unable to access web pages located on the www.cisco.com web server. Pings from the workstations to the server using the ping www.cisco.com command are successful. What settings should the administrator check to determine the cause of the problem?
MAC address settings
IP address settings
firewall settings
DNS server settings
A technician receives a trouble ticket from a user reporting that a website is no longer accessible. What two questions would the technician ask to narrow down the potential problem? (Choose two.)
What operating system is installed on your computer?
Can you access other web sites from this computer browser?
What model computer are you using to access this site?
Could you access this web site previously from this device?
Do you remember your password to this web site?
Which two actions demonstrate effective active listening techniques when assisting a customer with a problem? (Choose two.)
re-asking questions the customer has already answered when describing the problem
stopping the customer so you can ask questions as you think of them
allowing the customer to explain the problem
correcting the customer when they use incorrect technical terms or jargon
Let the customer know that you are listening by interjecting phrases such as “I understand,” “I see,” and “OK.”
Which question enables the technician to determine the scope of a network issue reported by a user?
Are other users in your area experiencing the same issue?
Is the problem one that you have experienced before?
Are you seeing any error messages when the problem occurs?
Have you added any new applications recently?
A secretary receives a phone call from someone claiming that their manager is about to give an important presentation but the presentation files are corrupted.
The caller sternly asks that the secretary email the presentation right away to a personal email address. The caller also states that the secretary is being held personally responsible for the success of this presentation.
What type of social engineering tactic is the caller using?
intimidation
trusted partners
familiarity
urgency
What do you call an impersonation attack that takes advantage of a trusted relationship between two systems?
spamming
man-in-the-middle
sniffing
spoofing
A client device has initiated a secure HTTP request to a web browser. Which well-known port address number is associated with the destination address?
110
80
443
404
An administrator is troubleshooting connectivity on the office network. PC1 is able to send print jobs to Printer1, but is unable to access File Server1. Which action would correct the problem?
Change the R1 Fa0/1 interface IP address to 10.231.64.1
Change the File Server1 IP address to 10.231.96.253.
Change the PC1 IP address to 10.231.64.115.
Change the R1 Fa0/0 interface subnet mask to 255.255.0.0.
A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.)
netsh interface ipv6 show neighbor
tracert
nslookup
ping
ipconfig
Wi-Fi Protected Access (WPA) - A Wi-Fi Alliance standard that uses WEP but secures the data with the much stronger TKIP encryption algorithm.
WPA3 - This authentication standard requires the use of Protected Management Frames (PMF).
Wired Equivalent Privacy (WEP) - The original 802.11 specifications were designed to secure the data using the RC4 encryption method with a static key.
WPA2 - The current industry standard for securing wireless networks that use AES for encryption.
WPA
WPA3
WEP
WPA2
What information is used by TCP to reassemble and reorder received segments?
acknowledgment numbers
fragment numbers
port numbers
sequence numbers
A PC user issues the netstat command without any options. What is displayed as the result of this command?
a local routing table
a list of all established active TCP connections
a network connection and usage report
a historical list of successful pings that have been sent
Which action is performed by a client when establishing communication with a server via the use of UDP at the transport layer?
The client sends a synchronization segment to begin the session.
The client sends an ISN to the server to start the 3-way handshake.
The client sets the window size for the session.
The client randomly selects a source port number.
A TCP segment was sent by PC1 to the web server via port 80. Because of an unexpected network failure, the data was forwarded by R1 but was not received by R2. Which statement is correct about this scenario?
The web server will not acknowledge this segment. The PC1 timer will expire and PC1 will resend the segment.
R1 forwarded the data to R2 but R2 did not receive it. R2 will send a request to R1 to resend the segment.
R1 will request that PC1 resend the segment.
The timer on R1 will expire and R1 will resend the segment to R2.
A destination PC receives an email message with the sequence numbers on packets out of order. Which layer of the TCP/IP model is responsible for reassembling the packets of the message in the correct order?
application
network access
transport
internet
A client device has initiated a secure HTTP request to a web browser. Which well-known port address number is associated with the destination address?
404
110
443
80
Which three pieces of information are identified by a URL? (Choose three.)
the domain name that is being accessed
the MAC address of the web server
the location of the resource
the protocol that is being used
the protocol that is being used
Which number or set of numbers represents a socket?
192.168.1.1:80
10.1.1.15
21
01-23-45-67-89-AB
A new employee is attempting to configure a cell phone to connect to the email server of the company. Which port number should be selected when using the IMAP4 protocol to access email messages stored on the local server?
69
25
143
110
While a network security product is being deployed, a customizable list of allowable protocols is shown. Which three protocols should be allowed to provide for the use of email on a network? (Choose three.)
Telnet
TFTP
POP3
IMAP4
SMTP
tracert - Displays the route taken to the destination.
nslookup - Directly queries the name server for information on a destination domain.
ping - Tests connections to other IP hosts.
netstat - Displays network connections.
ipconfig - Displays IP configuration information.
Tracert
Nslookup
Ping
Netstat
Ipconfig
What is a function of the tracert command that differs from the ping command when they are used on a workstation?
The tracert command reaches the destination faster.
The tracert command is used to test the connectivity between two devices.
The tracert command shows the information of routers in the path.
The tracert command sends one ICMP message to each hop in the path.
A technician is troubleshooting a network where it is suspected that a defective node in the network path is causing packets to be dropped. The technician only has the IP address of the end point device and does not have any details of the intermediate devices. What command can the technician use to identify the faulty node?
ipconfig /flushdns
ping
tracert
ipconfig /displaydns
A computer has been assigned an IP address of 169.254.33.16. What command initiates the process of requesting a new IP address?
net computer
nslookup
tracert
ipconfig /release
