Exam 1
9. In a ______________________, data packets arrived at the destination host in the order in which they were transmitted from the source host. a. IP Network b. Internet c. Circuit switched network d. Packet switched network e. Both Circuit and Packet switched networks
C
_______________ Reference model has 5 layers. a. TCP b. IP c. TCP/IP d. OSI e. Both TCP/IP and OSI
C
_________________is an application layer protocol that allows users to transfer data files from one computer to others. a. DNS b. HTTP c. FTP d. SSH e. DHCP f. Telnet
C
________________________can be defined as group of computers and other computing devices connected together over communication channels to facilitate communication
Computer Networks
Open Ended: 6. What is meant by "dedicated communication line"
Connection established between Source/Destination is referred as "dedicated communication line" - means that it is reserved only for a particular Source/Destination and cannot be used by another communication entity.
11. _________________is used to resolve an IP address into a MAC address. a. IP b. TCP c. UDP d. ARP e. ICMP f. Both TCP and UDP
D
12. In a __________________, each packet might follow a different route to get to the final destination a. Public switched network b. Telephone networks c. Circuit switched network d. Packet switched network e. Both Circuit and Packet switched networks
D
5. __________________ is an example of a connection-less communication network a. Public switched network b. Telephone networks c. Circuit switched network d. Packet switched network e. Both Circuit and Packet switched networks
D
_________________ is responsible to deliver the data packets from one hop to another hop until the data packets reach to the network for which the destination host is attached a. Application layer b. Transport layer c. Internet layer d. Link layer (also called network interface layer) e. Physical layer f. Both application and transport layers
D
________________________is an Internet layer protocol that is used for error reporting. a. IP b. TCP c. UDP d. ICMP e. MAC and ARP f. Both IP and ICMP
D
________________________is an application layer protocol that allows users to securely connect to a server remotely over an insecure network. a. DNS b. HTTP c. FTP d. SSH e. DHCP f. SMTP
D
_________________is an Internet layer device. a. Repeater b. Bridge c. Switch d. Router e. Both bridge and switch f. Hub
D
HTTP stands for _____________
Hyper Text Transfer Protocol
IP stands for ____________
Internet Protocol
_______________ Reference model has 7 layers. g. TCP h. IP i. TCP/IP j. OSI k. Both TCP/IP and OSI
J
OSI stands for _____________
Open System Interconnection
22. What is meant by a "dynamic leased IP address"?
i. We call it dynamic because each time when you connect to the network, the IP add may change (ie., assign an IP address at run time by the DHCP server). ii. We call it leased because each dynamic IP address has a certain time period. When time expires, the IP add will return to the IP address pool unless the leased is renewed.
DNS stands for _______
Domain Name System
DHCP stand for _____________
Dynamic Host Configure Protocol
9. _________________is a Link layer (also called network interface layer) device. a. Repeater b. Bridge c. Switch d. Router e. Both bridge and switch f. Hub
E
_________________is an application layer protocol that assigns leased IP addresses to devices at run time. a. DNS b. HTTP c. FTP d. SMTP e. DHCP f. Telnet
E
Open Ended: 5. What three phases are required in a connection oriented communication network
1. Establish connection 2. Transmission of data 3. Releasing the connection
12. ___________________ is referred as a connection oriented protocol that provides end to end message reliability a. IP b. TCP c. UDP d. ICMP e. MAC and ARP f. Both IP and ICMP
A
14. ___________________ is an example of a computer network where limited number of computers are connected together to facilitate communication and that spans a small geographical area a. LAN b. MAN c. WAN d. GBN
A
4. _________________is an example of a Wide Area Network a. IP network b. Campus network c. CAR area network d. Home area network e. Both (a) and (c) f. None of the above
A
Chances that data packets get lost or delayed during the transmission are high in __________ a. Public switched network b. Telephone networks c. Circuit switched network d. Packet switched network e. Both Circuit and Packet switched networks
A
___________________ is an application layer protocol use to resolve/convert an Host Name into an IP address a. DNS b. HTTP c. FTP d. SSH e. DHCP f. Telnet
A
___________________ is the top most layer of the TCP/IP reference model a. Application layer b. Transport layer c. Internet layer d. Link layer (also called network interface layer) e. Physical layer
A
_________________is a physical layer device. a. Repeater b. Bridge c. Switch d. Router e. Both bridge and switch f. Hub
A
_________________provides an interface to end-users, so that end users can interact with rest of the layers of the TCP/IP reference model a. Application layer b. Transport layer c. Internet layer d. Link layer (also called network interface layer) e. Physical layer f. Both application and transport layers
A
________________is one of the layers in the TCP/IP reference model that provides support to variety of users applications and protocols running at the top most layer of the TCP/IP reference model. a. Application layer b. Transport layer c. Internet layer d. Link layer (also called network interface layer) e. Physical layer f. Both application and transport layers
A
Define protocol in the context of computer network.
A protocol is just a set of rule that define how the data is going to be exchanged b/w the 2 communication entities
FTP stands for ______________
File Transfer Protocol
TCP stands for ____________
Transission Control Protocol
TCP/IP stands for ______________
Transmission Control Protocol / Internet Protocol
ARP stands for ___________
Address Resolution Protocol
10. _________________is an example of a Metropolitan Area Network a. IP network b. Campus network c. CAR area network d. Home area network e. Both (a) and (c) f. None of the above
B
10. _________________is an intermediate device that provides forwarding functionality to move the data from one hop to other. a. Repeater b. Switch c. Router d. LAN e. Hub
B
12. ___________________ is referred as a connection oriented protocol that provides end to end message reliability a. IP b. TCP c. UDP d. ICMP e. MAC and ARP f. Both IP and ICMP
B
8. _______________ is a type of network that requires out of order sequencing a. Public switched network b. IP Network c. Telephone networks d. Circuit switched network e. Both Circuit and Packet switched networks
B
__________________ is a communication protocol that works with the web browsers to allow users to access web pages stored on the webs servers. a. DNS b. HTTP c. FTP d. SSH e. DHCP f. Telnet
B
___________________ is an example of a networking infrastructure where individual LANs are connected together using backbone lines and that covers relatively larger geographical area than a single small network a. LAN b. MAN c. WAN d. GBN
B
_________________is one of the layers in the TCP/IP reference model that provides end-to-end message reliability (i.e., reliable delivery of messages all the way from source host to destination host) a. Application layer b. Transport layer c. Internet layer d. Link layer (also called network interface layer) e. Physical layer f. Both application and transport layers
B
11. ______________ is a type of network where all the transmitted data packets between the source and destination have to follow a predetermined route. a. IP Network b. Internet c. Circuit switched network d. Packet switched network e. Both Circuit and Packet switched networks
C
13. __________________ is an example of a connection oriented communication network a. IP Network b. Internet c. Circuit switched network d. Packet switched network e. Both Circuit and Packet switched networks
C
3. _________________is an example of a Local Area Network a. Campus area network b. IP network c. Home area network d. Both (a) and (c) e. None of the above
C
6. ___________________ is an example of a networking infrastructure that covers largest geographical area than any other type of network a. LAN b. MAN c. WAN d. GBN
C
7. In a ______________________, all required resources are reserved prior to the transmission of data between the source and destination hosts. a. IP Network b. Internet c. Circuit switched network d. Packet switched network e. Both Circuit and Packet switched networks
C
_________________is one of the layers in the TCP/IP reference model that transmits the data at the byte levels using the communication channel a. Application layer b. Transport layer c. Internet layer d. Link layer (also called network interface layer) e. Physical layer f. Both application and transport layers
E
_______________ is a user command program that allows users to remotely connect to a server over an insecure network (i.e., the Internet) a. DNS b. HTTP c. FTP d. SMTP e. DHCP f. Telnet
F
True or False : DHCP assigns leased static IP addresses to devices at run time.
False
True or False : Telnet is an application layer protocol that allows users to connect to a remote server over a secure tunnel
False
True or False? In Circuit Switched Network, source and destination can exchange data without establishing a dedicated connection/circuit
False
True or False? In a Circuit Switched Network, the dedicated communication line is shared among multiple users.
False
True or False? Switch is an Internet layer device that examines the header of each packet to determine its destination IP address.
False
True or False? UDP is a transport layer protocol that offers reliable delivery of user data all the way from the source host to the destination host.
False
SSH stands for _______
Secure Shell
4. Discuss the difference between Router and a Switch (use internet to find more information).
The main difference between a router and a switch is that a switch creates a network, and a router connects a network. Routers connect users and devices to the internet and also acts as a dispatcher sending the information along a path to the most efficient route. Switches connect certain devices to each other to allow them to talk to each other, hence creating a network.
3. Discuss the differences between TCP and UDP. Give an example to show which protocol should be used for different applications.
The main difference between the TCP and the UDP protocols would be that way in which the data is transmitted to the destination host. The UDPs main goal is to transmit the data as quickly as possible without a sense of organization. TCP on the other hand transmits the data in the proper sequence that when the data arrives at the host network destination it can be properly ordered.
True or False? In Packet Switched Network, each packet must contain the source/destination addresses.
True
True or False? In Packet Switched Network, source and destination can exchange data without establishing a dedicated connection/circuit
True
UDP stands for ___________
User Datagram Program