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Computer Networks

Beschreibung

ThirdYear Third Year Quiz am Computer Networks, erstellt von Faheem Ahmed am 18/10/2017.
Faheem Ahmed
Quiz von Faheem Ahmed, aktualisiert more than 1 year ago
Faheem Ahmed
Erstellt von Faheem Ahmed vor etwa 7 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
An IPv4 address is _________ bits.
Antworten
  • 8
  • 16
  • 32
  • 64

Frage 2

Frage
What is the class of the address 200.66.10.21?
Antworten
  • A
  • B
  • C
  • D

Frage 3

Frage
What is the hostid of the address 12.11.1.21?
Antworten
  • 11.1.21
  • 1.21
  • 21
  • None

Frage 4

Frage
What is the address of the network to which the host 130.8.119.1 is connected ?
Antworten
  • 130.8.119.0
  • 130.8.0.0
  • 130.0.0.0
  • None

Frage 5

Frage
Which error detection method involves polynomials?
Antworten
  • VRC
  • LRC
  • CRC
  • checksum

Frage 6

Frage
In cyclic redundancy checking, the divisor is _______the CRC.
Antworten
  • the same size as
  • one bit less than
  • one bit more than
  • two bits more than

Frage 7

Frage
IPV6 address has ____________ bits.
Antworten
  • 32
  • 64
  • 128
  • 256

Frage 8

Frage
What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask?
Antworten
  • 16
  • 32
  • 62
  • 30

Frage 9

Frage
You need to subnet a network that has 5 subnets, each with at least 16 hosts. Which will be your choice?
Antworten
  • 255.255.255.192
  • 255.255.255.224
  • 255.255.255.240
  • 255.255.255.248

Frage 10

Frage
Which protocol does Ping use?
Antworten
  • TCP
  • ARP
  • ICMP
  • DHCP

Frage 11

Frage
Which class of IP address provides a maximum of only 254 host addresses per network ID?
Antworten
  • A
  • B
  • C
  • D
  • E

Frage 12

Frage
Which of the following devices takes data sent from one network device and forwards it to the destination node based on MAC address?
Antworten
  • Hub
  • Switch
  • Router
  • Bridge

Frage 13

Frage
HUB is a _________ Device and Switch is a ________ Device.
Antworten
  • Unicast, Multicast
  • Multicast, Unicast
  • Broadcast, Unicast
  • Unicast, Broadcast

Frage 14

Frage
The last address of IP address represents
Antworten
  • Unicast address
  • Network address
  • Broadcast address
  • Multicast address

Frage 15

Frage
DNS stands for
Antworten
  • Dynamic Name System
  • Dynamic Network System
  • Domain Name System
  • Domain Network Service

Frage 16

Frage
What is the size of MAC address?
Antworten
  • 16 bits
  • 32 bits
  • 48 bits
  • 64 bits

Frage 17

Frage
What is the size of host bits in Class B of IP address?
Antworten
  • 4
  • 8
  • 16
  • 32

Frage 18

Frage
What is the usable size of network bits in Class B of IP address?
Antworten
  • 4
  • 8
  • 14
  • 16

Frage 19

Frage
Which of the following is/are protocols of Application?
Antworten
  • FTP
  • DNS
  • Telnet
  • All the above.

Frage 20

Frage
Default administrative distance of Static Route
Antworten
  • 0
  • 1
  • 10
  • 90
  • 100

Frage 21

Frage
Which protocol working at the Transport layer provides a connectionless service between hosts?
Antworten
  • IP
  • ARP
  • TCP
  • UDP

Frage 22

Frage
What protocol is used to find the hardware address of a local device?
Antworten
  • DNS
  • ARP
  • IP
  • ICMP

Frage 23

Frage
A router ?
Antworten
  • forwards a packet to all outgoing links.
  • forwards a packet to all outgoing links, except the link upon which the packet originated
  • forwards a packet to the next free outgoing link
  • determines on which outgoing link a packet is to be forwarded.

Frage 24

Frage
Which command does not show that two devices are failing to route packets between them successfully?
Antworten
  • show interface
  • trace
  • telnet
  • ping

Frage 25

Frage
Which of the following ranges are considered well-known port numbers?
Antworten
  • 1–1023
  • 1024 and above
  • 1–256
  • 1–65534

Frage 26

Frage
Which protocol does DHCP use at the Transport layer?
Antworten
  • IP
  • TCP
  • UDP
  • ARP

Frage 27

Frage
Which class of IP address has the most host addresses available by default?
Antworten
  • A
  • B
  • C
  • D

Frage 28

Frage
What does the command ip route 192.168.50.0 255.255.255.0 10.2.1.3 specify?
Antworten
  • The router should use network 192.168.50.0 to get to address 10.2.1.3
  • Both 192.168.50.0 and 10.2.1.3 use a mask of 255.255.255.0
  • You want the router to trace a route to network 192.168.50.0 via 10.2.1.3
  • The router should use address 10.2.1.3 to get to devices on network 192.168.50.0

Frage 29

Frage
Match the following: A. Repeaters 1. Data Link Layer B. Bridges 2. Network Layer C. Routers 3. Physical Layer
Antworten
  • A --->2, B--->3, C--->1
  • A--->3, B---->1, C---->2
  • A--->3, B----->2, C---->1
  • A---->1, B---->2, C---->3

Frage 30

Frage
Which of the following is true of a Switch?
Antworten
  • Switches forward packets based on IP address.
  • Switches forward packets based on MAC address.
  • Switches forward packets based on IPX address.
  • Switches forward packets based on Layer 3 address.

Frage 31

Frage
A client workstation is connected to a DHCP server through a switch and a router, The client machine has been able to access the network resources without any problem. However, after the recent configuration change on the DHCP server, the client workstation is not able to access any network resources. What is the likely solution.
Antworten
  • Clear arp cache on the router
  • Use ipconfig command with /release and /renew options
  • Reset switch MAC address table
  • Issue a tracert command to DHCP server

Frage 32

Frage
Match the following: 1. Segments A. Data Link Layer 2. Packets B. Network Layer 3. Frames C. Transport Layer
Antworten
  • 1--->A; 2---->C; 3 --->B
  • 1--->C; 2---->A; 3 --->B
  • 1--->C; 2---->B; 3 --->A
  • 1--->A; 2---->B; 3 --->C

Frage 33

Frage
Which of the following statements are true regarding the command ip route 172.16.4.0 255.255.255.0 192.168.4.2? 1. The command is used to establish a static route. 2. The default administrative distance is used. 3. The command is used to configure the default route. 4. The subnet mask for the source address is 255.255.255.0.
Antworten
  • 1 and 2
  • 2 and 4
  • 3 and 4
  • All of the above

Frage 34

Frage
If your routing table has a static, a RIP, and an IGRP route to the same network, which route will be used to route packets by default?
Antworten
  • Any available route
  • RIP route
  • Static route
  • IGRP route
  • They will all load-balance.

Frage 35

Frage
A network administrator views the output from the show ip route command. A network that is advertised by both RIP and IGRP appears in the routing table flagged as an IGRP route. Why is the RIP route to this network not used in the routing table?
Antworten
  • IGRP has a faster update timer.
  • IGRP has a lower administrative distance.
  • RIP has a higher metric value for that route.
  • The IGRP route has fewer hops.

Frage 36

Frage
Start and stop bits are used in serial communication for
Antworten
  • Error detection
  • Error correction
  • Synchronization
  • Slowing down the communication

Frage 37

Frage
How many Character per sec (7bits + 1parity) can be transmitted over a 2400 bps line if the transfer is synchronous (1 "Start" and 1 "stop" bit)?
Antworten
  • 300
  • 240
  • 250
  • 24

Frage 38

Frage
The Network topology that supports bi-directional links between each possible node is
Antworten
  • Ring
  • Star
  • Tree
  • Mesh

Frage 39

Frage
In a broad Sense, a railway track is an example of
Antworten
  • Simplex
  • Half Duplex
  • Full Duplex
  • All of these

Frage 40

Frage
If one link fails, only that link is affected. All other links remain active. Which topology does this?
Antworten
  • Mesh topology
  • Star topology
  • Bus topology
  • Physical topology

Frage 41

Frage
Which command would you place on interface connected to the Internet?
Antworten
  • ip nat inside
  • ip nat outside
  • ip outside global
  • ip inside local

Frage 42

Frage
Which command would you place on interface on a private network?
Antworten
  • ip nat inside
  • ip nat outside
  • ip outside global
  • ip inside local

Frage 43

Frage
What is the administrative distance of OSPF?
Antworten
  • 90
  • 100
  • 110
  • 120

Frage 44

Frage
Which three commands can be used to check LAN connectivity problems on a router? (Select THREE )
Antworten
  • show interfaces
  • show ip route
  • tracert
  • ping
  • dns lookups

Frage 45

Frage
You have an interface on a router with the IP address of 192.168.192.10/29. Including the router interface, how many hosts can have IP addresses on the LAN attached to the router interface?
Antworten
  • 6
  • 8
  • 30
  • 32

Frage 46

Frage
What is the sub network number of a host with an IP address of 172.16.66.0/21?
Antworten
  • 172.16.36.0
  • 172.16.48.0
  • 172.16.64.0
  • 172.16.0.0

Frage 47

Frage
The network address of 172.16.0.0/19 provides how many subnets and hosts?
Antworten
  • 7 subnets, 30 hosts each
  • 8 subnets, 8,190 hosts each
  • 8 subnets, 2,046 hosts each
  • 7 subnets, 2,046 hosts each

Frage 48

Frage
On a VLSM network, which mask should you use on point-to-point WAN links in order to reduce the waste of IP addresses?
Antworten
  • /27
  • /28
  • /29
  • /30

Frage 49

Frage
When data is encapsulated, which is the correct order?
Antworten
  • Data, frame, packet, segment, bit
  • Segment, data, packet, frame, bit
  • Data, segment, packet, frame, bit
  • Data, segment, frame, packet, bit

Frage 50

Frage
If you use either Telnet or FTP, which is the highest layer you are using to transmit data?
Antworten
  • Application
  • Presentation
  • Session
  • Transport
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