Cisco Introduction to Networks Chapter 17
On a Windows 10 host, the ping command send how many consecutive ICMP echo request messages?
4
How many consecutive ICMP echo request messages does an IOS device send?
5
Programs that may need the assistance of application layer services to use network resources like file transfer or network print spooling are called?
Application Layer Services
What is an Itemized list of items IT needs to run , including fiscal year equipment purchasing?
Budget
What determines the cost of a router or switch?
Capacity and Features Network Management capabilities Embedded Security technologies Optional adv. switching technologies
To determine traffic flow patterns, it is important to do what 2 things?
Capture traffic during peak utilization times Perform the capture on different network segments
What are the 4 considerations you should think about when designing a small network?
Cost Speed and Types of Ports/Interfaces Expandability Operating System Features and Services
How do you interrupt a tracert in Windows?
Ctrl-C
What Windows 10 tool is especially useful to determine which applications are using network services on a host?
Data Usage tool
What is a List of devices that use or comprise the network
Device Inventory
What service resolves a domain name to an IP address (e.g., cisco.com = 72.163.4.185)?
Domain Name System (DNS)
What protocol is used by clients to acquire an IP configuration (i.e., IP address, subnet mask, default gateway and more)?
Dynamic Host Configuration Protocol (DHCP)
Name 2 network applications
Email clients web browsers
What Devices will factor into the IP addressing scheme of a network?
End user devices - (i.e., wired, wireless, remote access) Servers and peripherals (e.g., printers and security cameras) Intermediary devices - switches and access points
On an IOS device what indicates successful receipt of an echo reply message?
Exclamation Point (!)
What version of IOS ping is entered in privileged EXEC mode by typing ping without a destination IP address?
Extended Ping
What service allows files to be downloaded and uploaded between a client and server?
FTP - File Transfer Protocol
True or False: Reliability is NOT an important part of network design
False
True or False: SSH is unencrypted
False
True or False: the amount of redundancy to incorporate into the network is NOT a key element of cost
False
True or False: an IP telephony solution's quality of communications does not meet the same standards as VoIP
False, IP telephony solutions typically have better communications quality (sound better)
Devices that have a specific number and type of ports or interfaces and cannot be expanded are called?
Fixed configuration devices
Web clients and web servers exchange web traffic using which protocol?
Hypertext Transfer Protocol (HTTP)
What protocol is used for secure web communication?
Hypertext Transfer Protocol Secure (HTTPS)
What voice solution performs voice-to-IP conversion with the use of a dedicated server for call control and signaling?
IP Telephony
How can Redundancy be accomplished?
Installing duplicate equipment, Supplying duplicate network links for critical areas
Even though its more expensive, why would you choose Layer 2 devices (switches) that can accommodate increased speeds such as 10Gbit?
It allows the network to evolve/grow without replacing central devices.
What 6 functions should Network device operating systems have so that they can support many organization requirements?
Layer 3 switching Network Address Translation (NAT) Dynamic Host Configuration Protocol (DHCP) Security Quality of service (QoS) Voice over IP (VoIP)
Devices that have expansion slots to add new modules as requirements evolve are called?
Modular devices
applications that are network-aware, meaning that they implement application layer protocols and are able to communicate directly with the lower layers of the protocol stack are called?
Network Applications
What are toe two forms of software programs or processes that provide access to the network?
Network applications Application layer services
What documents contain Physical and logical topology of your network?
Network documentation
To scale a network, what 4 elements are required?
Network documentation Device inventory Budget Traffic analysis
What is the most effective way to quickly test Layer 3 connectivity between a source and destination IP address?
Ping
What can you do to o ensure that the ARP cache is populated with the entry of an IP address?
Ping the ip address
Email clients use what protocol(s) to RETRIEVE email?
Post Office Protocol (POP3) or Internet Message Access Protocol (IMAP)
Extended traceroute is entered in what mode on an IOS device?
Privileged EXEC
Analyzing and understanding the type of traffic that is crossing the network as well as the current traffic flow is called
Protocol analysis
What is QoS?
QoS (Quality of Service)
The network must support what mechanisms to minimize latency issues for real-time streaming applications?
Quality of Service (QoS)
What is QoS used for?
Quality of Service (QoS) Is used to classify traffic according to priority during times of congestion
What does RTCP stand for?
Real-Time Transport Control Protocol (RTCP)
What does RTP stand for?
Real-Time Transport Protocol (RTP)
What two protocols that support the QoS requirements?
Real-Time Transport Protocol (RTP) and Real-Time Transport Control Protocol (RTCP)
What helps to eliminate single points of failure?
Redundancy
Email servers and clients use what protocol to SEND emails?
Simple Mail Transfer Protocol (SMTP)
Small network voice and video over IP can be solved by using what 2 VoIP applications?
Skype Non-enterprise versions of Cisco WebEx
What Windows 10 tool is useful to list Applications running and CPU and Memory Utilization?
Task Manager
What 3 built-in tools does A Windows host provide to display OS and OS Version, CPU utilization, RAM utilization, Drive utilization, Non-Network applications, Network applications?
Task Manager Event Viewer Data Usage tools
What are The two most common remote access solutions?
Telnet Secure Shell (SSH)
What application can be used to view the current applications, processes, and services running on a Windows PC?
The Task Manager
What does extended tracerout give you over standard tracerout?
Timeout in seconds [3]: Probe count [3]: Minimum Time to Live [1]: Maximum Time to Live [30]: Port Number [33434]: etc.
What tool can help locate Layer 3 problem areas in a network?
Traceroute in IOS or tracert in windows
Analyziing and Documenting Protocols, applications, and services and their respective traffic requirements is called?
Traffic analysis
True or False: CDP automatically discovers neighboring Cisco devices running CDP, regardless of which Layer 3 protocol or suites are running
True
True or False: Choosing the number and type of ports on a router or switch is a critical decision
True
True or False: It is recommended that you plan, document, and maintain an IP addressing scheme based on device type
True
True or False: On a linux host, ifconfig can be used to add or delete IP addresses from the interface configuration?
True
True or False: One method for starting a baseline is to copy and paste the results from an executed ping, trace, or other relevant commands into a text file. These text files can be time stamped with the date and saved into an archive for later retrieval and comparison
True
True or False: Small networks typically have a single WAN connection provided by DSL, cable, or an Ethernet connection.
True
True or False: The Cisco Discovery Protocol (CDP) is a Cisco proprietary protocol that runs at the data link layer.
True
True or False: The expense of cable runs required to connect every device on the network must also be considered.
True
True or False: Typically, VOIP is less expensive than an IP telephony solution
True
True or False: When a Cisco device boots, CDP starts by default
True
True or False: When pining an IP address, An Uppercase U indicates a router along the path responded with an ICMP Type 3 "destination unreachable" error message
True
True or False: the ifconfig command can also be used to verify the interface IP configuration on a Mac host
True
True or false: Telnet is unencrypted
True
True or False: A server could provide multiple network services.
True, a server could be an email, FTP, and SSH server
What message type is an ICMP Echo Reply?
Type 0
What Message type is an ICMP Echo Request?
Type 8
What type of devices convert analog telephone signals into digital IP packets?
Voice over IP (VoIP) devices
What tool can be used for protocol analysis?
Wireshark
What does a typical small network require?
a router a switch a wireless access point (to connect wired and wireless users) an IP phone a printer a server
The show cdp neighbors detail command will help determine if one of the CDP neighbors has what kind of an error?
an IP configuration error.
On Windows, Linux, or Mac hosts, what command lists all devices currently in the ARP cache of the host, which includes the IPv4 address, physical address, and the type of addressing (static/dynamic), for each device?
arp -a
What 2 ICMP message types does ping use?
echo request (ICMP Type 8) and echo reply (ICMP Type 0)
What in One of the most effective tools for monitoring and troubleshooting network performance?
establish a network baseline
Name 2 application layer services
file transfer network print spooling
What does having an IPaddressing scheme help with?
identify device type troubleshoot problems, as for instance, when troubleshooting network traffic issues with a protocol analyzer.
What command is used to display the status of the currently active interfaces and their IP configuration on a Linux host?
ifconfig
What command can be used to view the IP addressing information on a Windows host?
ipconfig
What command can be used to view the MAC address, as well as a number of details regarding the Layer 3 addressing of the device?
ipconfig /all
What command displays all of the cached DNS entries on a Windows computer?
ipconfig /displaydns
On a windows host using DHCP, what command(s) can be used to renew the IP address configuration?
ipconfig /release and ipconfig /renew
What does traceroute and tracert do?
returns a list of hops as a packet is routed through a network
What does extended ping give you that standard ping does not?
several prompts to customize the extended ping such as Repeat count [5]: Datagram size [100]: Timeout in seconds [2]:
What IOS command is used to verify the list of known hosts on the local Ethernet LANs?
show arp
What IOS command reveals the IP address of a neighboring device?
show cdp neighbors detail
What IOS command is used To verify the interface status and see if there are any error messages?
show interfaces
What IOS command is used To verify the Layer 3 information of an interface?
show ip interface
What IOS command is used to verify the Layer 3 routing information?
show ip route
What IOS command is used to verify which protocols are operational?
show protocols
What IOS command is used To verify the current configuration and settings?
show running-config
What IOS command is used to verify the current configuration and settings?
show running-config
What IOS command is used to verify the memory, interfaces, and licenses of the device?
show version
What does the asterisk (*) mean in a traceroute?
that the next hop router did not respond.
What happens If the router fails and there's only 1 internet connection?
the entire network loses connectivity to the internet.
On an IOS device, what does a period (.) indicate when pinging an ip address?
time expired waiting for an echo reply message
True or false: If there is a considerable increase in response times, there may be a latency issue to address
true
What real-time traffic should network devices be configured to support?
voice and video, in an appropriate manner relative to other data traffic
