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Online Networking Test - Networking Test - Random

Instruction:
  • This is a FREE online test. Beware of scammers who ask for money to attend this test.
  • Total number of questions: 20.
  • Time allotted: 30 minutes.
  • Each question carries 1 mark; there are no negative marks.
  • DO NOT refresh the page.
  • All the best!

Marks : 2/20

Total number of questions
20
Number of answered questions
0
Number of unanswered questions
20
Test Review : View answers and explanation for this test.
1.
Which router command allows you to view the entire contents of all access lists?
show all access-lists
show access-lists
show ip interface
show interface
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
To see the contents of all access lists, use the show access-lists command.
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Learn more problems on : Networking Basics
2.
You have 10 users plugged into a hub running 10Mbps half-duplex. There is a server connected to the switch running 10Mbps half-duplex as well. How much bandwidth does each host have to the server?
100 kbps
1 Mbps
2 Mbps
10 Mbps
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
Each device has 10 Mbps to the server.
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Learn more problems on : Networking Basics
3.
Which command is used to determine if an IP access list is enabled on a particular interface?
show access-lists
show interface
show ip interface
show interface access-lists
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
The show ip interface command will show you if any outbound or inbound interfaces have an access list set.
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Learn more problems on : Networking Basics
4.
Which of the following are unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
  1. Half-duplex Ethernet operates in a shared collision domain.
  2. Half-duplex Ethernet operates in a private collision domain.
  3. Half-duplex Ethernet has higher effective throughput.
  4. Half-duplex Ethernet has lower effective throughput.
2 only
1,2 and 3
1 and 4
4 only
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
Unlike full duplex, half-duplex Ethernet operates in a shared collision domain, and it has a lower effective throughput than full duplex.
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Learn more problems on : Internetworking
5.
Which of the following describe the DHCP Discover message?
  1. It uses FF:FF:FF:FF:FF:FF as a layer 2 broadcast.
  2. It uses UDP as the Transport layer protocol.
  3. It uses TCP as the Transport layer protocol.
  4. It does not use a layer 2 destination address.
1 only
1 and 2
3 and 4
4 only
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
A client that sends out a DHCP Discover message in order to receive an IP address sends out a broadcast at both layer 2 and layer 3. The layer 2 broadcast is all Fs in hex, or FF:FF:FF:FF:FF:FF. The layer 3 broadcast is 255.255.255.255, which means all networks and all hosts. DHCP is connectionless, which means it uses User Datagram Protocol (UDP) at the Transport layer, also called the Host-to-Host layer.
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Learn more problems on : TCP/IP
6.
The DoD model (also called the TCP/IP stack) has four layers. Which layer of the DoD model is equivalent to the Network layer of the OSI model?
Application
Host-to-Host
Internet
Network Access
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
The four layers of the DoD model are Application/Process, Host-to-Host, Internet, and Network Access. The Internet layer is equivalent to the Network layer of the OSI model.
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Learn more problems on : TCP/IP
7.
Which of the following is the decimal and hexadecimal equivalents of the binary number 10011101?
155, 0x9B
157, 0x9D
159, 0x9F
185, 0xB9
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:

To turn a binary number into decimal, you just have to add the values of each bit that is a 1. The values of 10011101 are 128, 16, 8, 4, and 1. 128 + 16 + 8 + 4 + 1 = 157.

Hexadecimal is a base-16 number system. The values of hexadecimal are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F-16 characters total, from which to create all the numbers you'll ever need. So, if 1001 in binary is 9, then the hexadecimal equivalent is 9. Since we then have 1101, which is 13 in binary, the hexadecimal answer is D and the complete hexadecimal answer is 0x9D.

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Learn more problems on : TCP/IP
8.
Which of the following are layers in the TCP/IP model?
  1. Application
  2. Session
  3. Transport
  4. Internet
  5. Data Link
  6. Physical
1 and 2
1, 3 and 4
2, 3 and 5
3, 4 and 5
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
This seems like a hard question at first because it doesn't make sense. The listed answers are from the OSI model and the question asked about the TCP/IP protocol stack (DoD model). However, let's just look for what is wrong. First, the Session layer is not in the TCP/IP model; neither are the Data Link and Physical layers. This leaves us with the Transport layer (Host-to-Host in the DoD model), Internet layer (Network layer in the OSI), and Application layer (Application/Process in the DoD).
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Learn more problems on : TCP/IP
9.
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?
14
15
16
30
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
A /27 (255.255.255.224) is 3 bits on and 5 bits off. This provides 8 subnets, each with 30 hosts. Does it matter if this mask is used with a Class A, B, or C network address? Not at all. The number of host bits would never change.
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Learn more problems on : Subnetting
10.
Which two statements describe the IP address 10.16.3.65/23?
  1. The subnet address is 10.16.3.0 255.255.254.0.
  2. The lowest host address in the subnet is 10.16.2.1 255.255.254.0.
  3. The last valid host address in the subnet is 10.16.2.254 255.255.254.0.
  4. The broadcast address of the subnet is 10.16.3.255 255.255.254.0.
1 and 3
2 and 4
1, 2 and 4
2, 3 and 4
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
The mask 255.255.254.0 (/23) used with a Class A address means that there are 15 subnet bits and 9 host bits. The block size in the third octet is 2 (256 - 254). So this makes the subnets in the interesting octet 0, 2, 4, 6, etc., all the way to 254. The host 10.16.3.65 is in the 2.0 subnet. The next subnet is 4.0, so the broadcast address for the 2.0 subnet is 3.255. The valid host addresses are 2.1 through 3.254.
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Learn more problems on : Subnetting
11.
Which command will show you whether a DTE or a DCE cable is plugged into serial 0?
sh int s0
sh int serial 0
show controllers serial 0
show serial 0 controllers
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
The show controllers serial 0 command will show you whether either a DTE or DCE cable is connected to the interface. If it is a DCE connection, you need to add clocking with the clock rate command.
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Learn more problems on : IOS and Security Device Manager
12.
What does RIPv2 use to prevent routing loops?
  1. CIDR
  2. Split horizon
  3. Authentication
  4. Classless masking
  5. Holddown timers
1 and 3
2, 3 and 5
2 and 5
3 and 4
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
RIPv2 uses the same timers and loop-avoidance schemes as RIPv1. Split horizon is used to stop an update from being sent out the same interface it was received on. Holddown timers allow time for a network to become stable in the case of a flapping link.
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Learn more problems on : IP Routing
13.
What command will display the forward/filter table?
show mac filter
show run
show mac address-table
show mac filter-table
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
The command show mac address-table displays the forward/filter table on the switch.
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Learn more problems on : Spanning Tree Protocol
14.
Which of the following provide inter-switch VLAN communication?
  1. ISL
  2. VTP
  3. 802.1Q
  4. 802.3Z
2 only
1 and 3
2 and 4
2, 3 and 4
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
ISL is a Cisco-proprietary frame-tagging method. IEEE 802.1Q is the nonproprietary version of frame tagging.
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Learn more problems on : Virtual LANs
15.
You configure the following access list: 
access-list 110 deny tcp 10.1.1.128 0.0.0.63 any eq smtp
access-list 110 deny tcp any eq 23
int ethernet 0
ip access-group 110 out
What will the result of this access list be?
Email and Telnet will be allowed out E0.
Email and Telnet will be allowed in E0.
Everything but email and Telnet will be allowed out E0.
No IP traffic will be allowed out E0.
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
If you add an access list to an interface and you do not have at least one permit statement, then you will effectively shut down the interface because of the implicit deny any at the end of every list.
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Learn more problems on : Security
16.
Which of the following would be good reasons to run NAT?
  1. You need to connect to the Internet and your hosts don't have globally unique IP addresses.
  2. You change to a new ISP that requires you to renumber your network.
  3. You don't want any hosts connecting to the Internet.
  4. You require two intranets with duplicate addresses to merge.
1, 2 and 4
2 and 4
3 only
All of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
The most popular use of NAT is if you want to connect to the Internet and you don't want hosts to have global (real) IP addresses, but option B and D are correct as well.
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Learn more problems on : Network Address Translation
17.
Which command would you place on interface connected to the Internet?
ip nat inside
ip nat outside
ip outside global
ip inside local
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
As in access-lists, you must configure your interfaces before NAT will provide any translations. On the inside networks you would use the command ip nat inside. On the outside interface, you will use the command ip nat outside.
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Learn more problems on : Network Address Translation
18.
Port Address Translation is also termed what?
NAT Fast
NAT Static
NAT Overload
Overloading Static
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
Another term for port address translation is NAT Overload because that is the command used to enable port address translation.
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Learn more problems on : Network Address Translation
19.
In which of the following technologies is the term HFC used?
DSL
PPPoE
Frame Relay
Dedicated T1
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
In a modern network, hybrid fibre-coaxial (HFC) is a telecommunications industry term for a network that incorporates both optical fiber and coaxial cable to create a broadband network.
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Learn more problems on : Wide Area Networks
20.
Which of the following command options are displayed when you use the Router# show frame-relay ? command?
  1. dlci
  2. neighbors
  3. lmi
  4. pvc
  5. map
1 only
2 and 4
3, 4 and 5
All of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
The show frame-relay ? command provides many options, but the options available in this question are lmi, pvc, and map.
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Learn more problems on : Wide Area Networks
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