Sheananginas Finale Flashcards
http, imap4, ftp, and telnet operate at what layer of the osi model?
Transport layer/ layer 4
What is the name for the protocol data unit (PDU) of the Data Link layer?
Frame
What layer of the OSI model describes how data between applications is synced and recovered if messages don’t arrive intact at the receiving application?
Session layer
A fast ethernet connection utilizes what pin on an RJ-45 plug
1, 2, 3, 6
A differential backup covers what on a system?
all of the files that have changed since the last full backup was performed.
A junior administrator is having issues connecting to a router’s console port using a TIA/EIA 568B standard cable and a USB serial to RJ-45 adapter despite verifying terminal settings. What is the issue?
The cable must be a rollover cable
at the transport layer of the osi what is used to find and communicate with a particular applcation running on a host?
port number
At what layer of the osi model do the 802.11 standards vary?
Physical Layer
At what layer of the OSI model do the IP, ICMP, and ARP protcols operate?
Network layer
at what layer of the osi model does a network switch normally operate
Layer 2/Data link Layer
At what point is a packet considered to be a giant?
It becomes a giant when it exceeds the medium’s maximum packet size.
Binary to decimal 1111 1111
Binary to hexadeciamal 1111 1111
255
FF 10-15 A-F
Decimal to hexadecmical you have to divide by 16 lmao good luck
ggs
Diffraction has what affect on a wireless signal’s propagation?
The signal is split into secondary waves that continue in the direction in which they split.
During termination of twisted pair cabling what should be done to minimize crosstalk
No more than 1 inch of the cable should be exposed.
How do you determine the manufacturer of a nic card based on the mac address
The first 24 bits (Organizationally Unique Identifier) OUI
How does refraction affect the propagation of a wireless transmission?
The signal is split into secondary waves that continue in the direction in which they split
if your network consists of all connected devices connecting to one central device, what topoogy is being used?
Star topology
In a TCP segment, what field indicated how many bytes the sender can issue to a reciever before the acknowledgemnt is recieved?
sliding-window
In order to ensure that a cable is not affected by electromagnetic interference, how far away should the cable be from fluorescent lighting?
At least 3 feet
In considering the responsibilities of each layer of the OSI model, what statement accurately reflects those of the Presentation layer?
The Presentation layer is responsible for reformatting, compressing, and/or encrypting data in a way that the application on the receiving end can read.
In tcp/ip model what layer combines application, presentation, and session layers?
Application layer/ layer 4
Packet’s that are smaller than a mediums packet size?
Runt
The 802.11 standard specifies the use of what technique in order to minimize the potential for collisions?
Collision avoidance technique (CSMA)
