MIS443 Exam 1
T
OSPF is commonly used by network routers to dynamically identify the fastest and shortest available routes for sending packets to their destination.
T
Once the connection is established, we can send and receive data using the send() and recv() methods for TCP communications.
100 Mb/s
One ISP (internet service provider) offers an 11 MB/s connection, while another ISP offered a 100 Mb/s connection. Which one would provide more bandwidth?
T
One of the core features of CMS is support for Mobile devices.
DISCOVER-OFFER-REQUEST-ACK
Order the IP address allocation/lease procedure using DHCP. 1 representing the first step in the process.
F
The Domain Name System is important in computer networking because it translates IP addresses (like 192.0.2.1) into human-readable domain names (like www.example.com) that computers use to locate resources on the internet.
T
IEEE 802.11ax will increase network capacity by adding broadcast subchannels
False
IMAP is primarily designed for downloading emails from a mail server to a client device, such as a computer or smartphone. When using IMAP, emails are typically downloaded to the client's device and are removed from the server.
Network - Packet Transport - Segment Data Link - Frame Application- Data Physical - Bits
Match the PDU to the corresponding network model layer:
HTTP - 80 DNS - 52 HTTPS 443 SMTP - 25 DHCP - 67
Match the port number with the corresponding Protocol:
True
My home network hosts all have 192.168.x.x addresses. These are not unique on the internet, but it does not matter, as only my WAN address is seen by the rest of the world, and I can use NAT to get any of my internal items to talk to the world.
T
Network management is the process of operating, monitoring, and controlling the network to ensure it works as intended and provides value to its users.
8C-AE-4C-F6-63-9E
Which of the following is most likely to be a MAC address?
F
802.11ac is the sixth generation of Wi-Fi
T
A hop in a routing calculation is defined as one link or circuit.
F
A load balancer ensures high availability by sending requests only to servers that are in the same subnet
in front of your servers
A load balancer is positioned....
T
A module is a collection of functions, classes, and variables that we can use from a program.
F
A socket address for a network consists of an IP address and MAC address.
-100
At least how many dB's are required for data transfer to occur while maintaining the 4G or LTE speeds.
F
Border Gateway Protocol (BGP) is a Intra Domain Routing Protocol
moves content closer to end clients
Content Delivery Networks....
DHCP Request
DHCP. In which of the following stages of acquiring an IP address, does a host express its intention of accepting a particular offer?
T
Due to changing communication technologies, most companies have combined voice and data communications functions.
Uses routing tables at each node that are updated dynamically
Dynamic routing
F
Elastic Load Balancing can handle the varying load of your application traffic only in a single Availability Zone.
Packet 3
Exam the contents of the trace file below. Which packet was sent by a host to determine the remote host's link-layer MAC address?
MAC address: (70:85:c2:72:14:d6)
Examine the trace file below. What did ARP resolve in packet 89?
False
IPv6 uses 32-bit addresses as opposed to the 128-bit addresses used by IPv4, allowing for a substantially larger number of possible addresses.
F
If the nearest edge server is closer than the origin server, latency will be increased.
F
In WIFI 6, traffic between devices and the Wi-Fi access point will be protected using 256 bit DES encryption
F
In a connection-oriented client-to-server model, the socket on the client process waits for requests from a server.
Packet 4
In the first 5 packets of the following trace file, which packet is using IPV6 exclusively?
F
LANs that run on radio frequencies use a type of wired media.
efficiently distributing incoming network traffic across a group of backend servers
Load balancing refers to....
T
Many network hubs and switches incorporate repeaters to regenerate signals so that attenuation of the signal does not occur.
T
RIP uses "hop count" to find the shortest path from one network to another
T
Request timed out: Seeing this error at the end of the traceroute means thata firewall or a security device might be blocking your request, or there was aproblem in the return route.
F
Routers Look up source addresses in routing/forwarding tables.
F
Routing Information Protocol (RIP) Incorporates traffic and error rate measures
T
Routing is the process of determining the path or route through the network that a particular message will follow from the sender to the recipient.
10 db
Signal to Noise Ratio: If a client device's radio receives a signal at -95 dBm, and the noise floor is -105 dBm. What is the effective SNR?
41 dB or higher
Signal to Noise Ratio: What signal is typically considered to be excellent?
F
TRACERT * in RTT columns means the router responded to the request within the maximum allotted time of two seconds.
True
The Transmission Control Protocol (TCP) is a transport protocol that is used on top of IP to ensure reliable transmission of packets.
T
The client-to-server data exchange takes place when a client connects to the server through a socket.
clientSocket.connect((serverName,serverPort))
The following code will connect a TCP socket from a client to a server.
T
The following code will use receive data and print the reponse. data=s.recv(4096) print("Data",str(bytes(data))) print("Length",len(data))
F
The following socket object clientSocket = socket(AF_INET, SOCK_DGRAM) would be used to create a UDP server socket.
F
The following socket object would be used to create a TCP server socket serverSocket = socket(AF_INET, SOCK_DGRAM)
1449
The following trace file shows the TCP process of sending an image from a webserver to a client. In packet 6 the first TCP segment, made up of 1448 bytes, is moved. The sequence number is therefore 1. What would the sequence number be in packet 8?
F
The further a received signal is from the noise floor, the worse the signal quality.
01001000.01111101.00101011.00100001
Which of the following is the binary value of the IP address 72.125.43.33?
SNMP
The most commonly used protocol for managing network devices is:
T
The new Wi-Fi 6, also known as 802.11ax, incorporates many new technologies that help with network congestion.
T
The primary purpose of a CDN edge server is to store content as near as possible to the requesting client computer, thereby reducing latency and improving page load times.
T
The socket () API creates an endpoint for communications and returns a socket descriptor that represents the endpoint.
IP address and port number
The socket is the combination of __________________________and is used for communication between multiple processes.
The domain name www.evernote.com was resolved to the IP address 72.247.100.221
The trace file below shows a DNS request in packet 146. Frame 153 shows the response to that request. What happened in frame 153?
T
The tracert command is a Command Prompt command that's used to show several details about the path that a packet takes from the computer or device you're on to whatever destination you specify.
allows for increased flexibility
There are two types of CMS installation: on-premises and cloud-based. On-premises installation means that the CMS software....
F
When an IPv6 computer joins a network, it sends out multicast neighbor solicitation packets searching for other computers on its broadcast domain. Because these packets all begin with ff02, only IPv6-capable machines on the broadcast domain will hear the multicast packet. Any IPv6 host that hears the multicast solicitation will respond with a router advertisement packet.
F
When an address is established, the client waits for the server to request a service.
F
When using dynamic routing, routing decisions are always made by a central host or server.
F
Wired Equivalent Privacy (WEP) provides the strongest form of encryption.
F
Without the DNS system we would be unable to connect to other computers on the internet.