Assignment 1 Flashcards
The number of layers in ISO OSI reference model
7
This layer is an addition to OSI model when compared with TCP IP model
Both Session and Presentation layer
Application layer is implemented in
End system
Transport layer is implemented in
End system
The functionalities of presentation layer includes
All of the mentioned
Delimiting and synchronization of data exchange is provided by
Session layer
In OSI model, when data is sent from device A to device B, the 5th layer to receive data at B is
Session layer
In TCP IP Model, when data is sent from device A to device B, the 5th layer to receive data at B is
Application layer
In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______
Removed
OSI stands for
open system interconnection
The OSI model has _______ layers.
7
TCP/IP model does not have ______ layer but OSI model have this layer.
session layer
Which layer links the network support layers and user support layers
transport layer
Which address is used in an internet employing the TCP/IP protocols?
all of the mentioned
TCP/IP model was developed _____ the OSI model.
prior to
Which layer is responsible for process to process delivery?
Transport layer
Which address identifies a process on a host?
port address
Which layer provides the services to user?
application layer
Transmission data rate is decided by
physical layer
Which of the following is not a layer of the Open Systems Interconnect (OSI) reference model?
Internet access layer
What layer of the OSI corresponds to label A and B? Application Presentation A Transport Nerwork B Physical
A is the session layer, and B is the data link layer.
What is the sentence to remember the OSI model?
Please Do Not Throw Sausage Pizza Away
The term packet is used fairly generically to refer to protocol data unit (PDU). There are PDU equivalent names in the different OSI layers. What is the name of the unit in the physical layer of the OSI reference model?
Bits
Which of the following matching is true concerning the unit name and its corresponding OSI layer location?
1) Application layer
2) Transport layer
3) Network layer
4) Data link layer
5) Physical layer
A) Bits B) Frames C) Segment D) Data E) Packets
1D, 2C, 3E, 4B, 5A
Which of the following layers of the OSI reference model is primarily concerned with forwarding data based on logical addresses?
Network layer
Which of the following transport layer protocol of the OSI reference model is a connection-oriented protocol that provides reliable transport between two communicating hosts?
Transport Control Protocol (TCP)
Which OSI reference model layer is responsible for the following? (a) Setting up session; (b) Maintaining a session; (c) Tearing down a session.
Session layer (Layer 5)
John, the network administrator of XYZ Corporation, is interested in changing the format of text from American Standard Code for Information Interchange (ASCII) to Extended Binary Code Decimal Interchange Code (EBCDIC). In addition, his IT manager requested that all sensitive and confidential information on their servers should be protected by applying the appropriate encryption. What OSI reference model layer is responsible for data format such as encryption?
Presentation layer (Layer 6)
Which of the following layers is not part of the TCP/IP protocol stack?
Presentation
Which of the following protocol to TCP port matching is correct?
Protocol: FTP SSH Telnet SMTP DNS HTTP
TCP Port: 80 22 25 23 53 20 and 21
FTP 20 and 21, SSH 22, Telnet 23, SMTP 25, DNS 53, HTTP 80
Which of the following protocol to TCP port matching is correct?
1) IMAP4
2) LDAP
3) HTTPS
4) RDP
A) 389
B) 3389
C) 143
D) 443
1C, 2A, 3D, 4B
Which wiring standard is used on modern Ethernet connectors and jacks?
TIA/EIA-568-B
Which type of transmission synchronization technique uses start and stop bits at the beginning and end of a data frame?
Asynchronous
What is the name of the mechanism used by TCP to increase and decrease the number of segments that are sent between each other before an acknowledgment is required?
Windowing
On which OSI layer is encryption performed?
Layer 6 - The presentation layer
Which of the matching from the following table is correct?
1) WAN link
2) Client
3) Server
4) Hub
5) Switch
6) Router
7) Media
A) This serves up resources to a network.
B) It is an older technology that interconnects network components such as clients and servers. It has variable number of available ports.
C) It is a device which makes its forwarding decisions based on logical network addresses.
D) It might be a workstation, laptop, smartphone with wireless capabilities, or a variety of other end-user terminal devices.
E) This device can be copper or fiber-optic cable.
F) It interconnects network components, and it has a variety of port densities. It does not simply take traffic in on one port and blast that traffic out all other ports. Rather, it learns which devices reside off of which ports.
G) It is the link that interconnects networks.
1G, 2D, 3A, 4B, 5F, 6C, 7E
Which of the following is not a network category based on the geographic dispersion of network components?
World-area network (WAN)
Which of the matching from the following diagram is correct?
1) Local-area network (LAN)
2) Wide-area network (WAN)
3) Metropolitan-area network (MAN)
4) Personal-area network (PAN)
A) It interconnects locations scattered throughout a metropolitan area.
B) It is a network whose scale is even smaller than a LAN. An example of this type of network is a connection between a PC and a digital camera via a universal serial bus.
C) It interconnects network components within a local region.
D) It interconnects network components that are geographically dispersed between two locations.
1C, 2D, 3A, 4B
When you are interconnecting multiple sites (for example, multiple corporate locations) via WAN links, a hub-and-spoke topology has a WAN link from each remote site (a spoke site) to the main site (the hub site).
True
False
True
Which of the following statements is true? (Choose two.) It’s about client and servers.
Client/server networks can cost more than peer-to-peer networks. For example, client/server networks might require the purchase of dedicated server hardware and a network OS with an appropriate number of licenses.
Client/server networks can easily scale, which might require the purchase of additional client licenses.
What is the name of the address that is used by a switch to identify specific devices?
MAC
What is the name of the address that is used by a router (at Layer 3) to identify specific devices?
IP
Which IEEE standard defines wired Ethernet as it is used on modern networks?
802.3
A Bluetooth connection between a mobile phone and a headset is an example of what type of network category?
PAN
An FDDI network uses which type of topology?
Dual Ring
What is the most popular topology that is used on modern LANs?
Star
Which option is a benefit of implementing a client/server arrangement over a peer-to-peer arrangement? (Choose two.)
Simplified administration
Easy scalability
At upper layers of the OSI reference model, bits are grouped together into protocol data units (PDUs) or data service units.
True
False
True
Switching is associated with Layer 2 (data link layer) and Layer 3 (network layer).
True
False
False
Broadband bandwidth usage divides the bandwidth into channels for use with multiple communications streams.
True
False
True
A converged network is a network that has the capabilities of transporting multiple types of traffic such as voice, video, and data, which can offer significant cost savings to organizations.
True
False
True
The actual traffic flow determines the logical topology, while how components are physically interconnected determines the physical topology.
True
False
True
