Explore topic-wise MCQs in Engineering.

This section includes 274 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.

51.

If you want to have more than one Telnet session open at the same time, what keystroke combination would you use?

A. Tab+Spacebar
B. Ctrl+X, then 6
C. Ctrl+Shift+X, then 6
D. Ctrl+Shift+6, then X
Answer» E.
52.

Which of the following is true when describing a multicast address?

A. Packets addressed to a unicast address are delivered to a single interface.
B. Packets are delivered to all interfaces identified by the address. This is also called a one-to-many address.
C. Identifies multiple interfaces and is only delivered to one address. This address can also be called one-to-one-of-many.
D. These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.
Answer» C. Identifies multiple interfaces and is only delivered to one address. This address can also be called one-to-one-of-many.
53.

Which of the following is true when describing a unicast address?

A. Packets addressed to a unicast address are delivered to a single interface.
B. These are your typical publicly routable addresses, just like a regular publicly routable address in IPv4.
C. These are like private addresses in IPv4 in that they are not meant to be routed.
D. These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.
Answer» B. These are your typical publicly routable addresses, just like a regular publicly routable address in IPv4.
54.

What multicast addresses does RIPng use?

A. <i class="networking-code">FF02::A</i>
B. <i class="networking-code">FF02::9</i>
C. <i class="networking-code">FF02::5</i>
D. <i class="networking-code">FF02::6</i>
Answer» C. <i class="networking-code">FF02::5</i>
55.

How should a router that is being used in a Frame Relay network be configured to keep split horizon issues from preventing routing updates?

A. Configure a separate subinterface for each PVC with a unique DLCI and subnet assigned to the subinterface.
B. Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic.
C. Configure many subinterfaces in the same subnet.
D. Configure a single subinterface to establish multiple PVC connections to multiple remote router interfaces.
Answer» B. Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic.
56.

Which of the following encapsulates PPP frames in Ethernet frames and uses common PPP features like authentication, encryption, and compression?

A. PPP
B. PPPoA
C. PPPoE
D. Token Ring
Answer» D. Token Ring
57.

Which of the following describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols?

A. HDLC
B. Cable
C. VPN
D. IPSec
E. xDSL
Answer» D. IPSec
58.

Which of the following describes an industry-wide standard suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer 3 Network layer of the OSI model?

A. HDLC
B. Cable
C. VPN
D. IPSec
E. xDSL
Answer» E. xDSL
59.

Which of the following uses ATM as the Data Link layer protocol that's terminated at what's known as the DSLAM?

A. DSL
B. PPPoE
C. Frame Relay
D. Dedicated T1
E. Wireless
Answer» B. PPPoE
60.

Which command is required for connectivity in a Frame Relay network if Inverse ARP is not operational?

A. <i class="networking-code">frame-relay arp</i>
B. <i class="networking-code">frame-relay map</i>
C. <i class="networking-code">frame-relay interface-dci</i>
D. <i class="networking-code">frame-relay lmi-type</i>
Answer» C. <i class="networking-code">frame-relay interface-dci</i>
61.

Which encapsulations can be configured on a serial interface?

  1. Ethernet
  2. Token Ring
  3. HDLC
  4. Frame Relay
  5. PPP

A. 1 and 4
B. 2 only
C. 3, 4 and 5
D. All of the above
Answer» D. All of the above
62.

Suppose that you have a customer who has a central HQ and six branch offices. They anticipate adding six more branches in the near future. They wish to implement a WAN technology that will allow the branches to economically connect to HQ and you have no free ports on the HQ router. Which of the following would you recommend?

A. PPP
B. HDLC
C. Frame Relay
D. ISDN
Answer» D. ISDN
63.

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

A. 1 only
B. 2 and 4
C. 3, 4 and 5
D. All of the above
Answer» D. All of the above
64.

In which of the following technologies is the term HFC used?

A. DSL
B. PPPoE
C. Frame Relay
D. Dedicated T1
Answer» E.
65.

Which of the following are valid ways to refer only to host 172.16.30.55 in an IP access list?

  1. 172.16.30.55 0.0.0.255
  2. 172.16.30.55 0.0.0.0
  3. any 172.16.30.55
  4. host 172.16.30.55
  5. 0.0.0.0 172.16.30.55
  6. ip any 172.16.30.55

A. 1 and 4
B. 2 and 4
C. 1, 4 and 6
D. 3 and 5
Answer» C. 1, 4 and 6
66.

If you wanted to deny FTP access from network 200.200.10.0 to network 200.199.11.0 but allow everything else, which of the following command strings is valid?

A. <i class="networking-code">access-list 110 deny 200.200.10.0 to network 200.199.11.0 eq ftp<br> access-list 111 permit ip any 0.0.0.0 255.255.255.255</i>
B. <i class="networking-code">access-list 1 deny ftp 200.200.10.0 200.199.11.0 any any</i>
C. <i class="networking-code">access-list 100 deny tcp 200.200.10.0 0.0.0.255 200.199.11.0 0.0.0.255 eq ftp</i>
D. <i class="networking-code">access-list 198 deny tcp 200.200.10.0 0.0.0.255 200.199.11.0 0.0.0.255 eq ftp<br> access-list 198 permit ip any 0.0.0.0 255.255.255.255</i>
Answer» E.
67.

Which of the following access lists will allow only HTTP traffic into network 196.15.7.0?

A. <i class="networking-code">access-list 100 permit tcp any 196.15.7.0 0.0.0.255 eq www</i>
B. <i class="networking-code">access-list 10 deny tcp any 196.15.7.0 eq www</i>
C. <i class="networking-code">access-list 100 permit 196.15.7.0 0.0.0.255 eq www</i>
D. <i class="networking-code">access-list 110 permit ip any 196.15.7.0 0.0.0.255</i>
E. <i class="networking-code">access-list 110 permit www 196.15.7.0 0.0.0.255</i>
Answer» B. <i class="networking-code">access-list 10 deny tcp any 196.15.7.0 eq www</i>
68.

What command will permit SMTP mail to only host 1.1.1.1?

A. <i class="networking-code">access-list 10 permit smtp host 1.1.1.1</i>
B. <i class="networking-code">access-list 110 permit ip smtp host 1.1.1.1</i>
C. <i class="networking-code">access-list 10 permit tcp any host 1.1.1.1 eq smtp</i>
D. <i class="networking-code">access-list 110 permit tcp any host 1.1.1.1 eq smtp</i>
Answer» E.
69.

You want to create a standard access list that denies the subnet of the following host: 172.16.50.172/20. Which of the following would you start your list with?

A. <i class="networking-code">access-list 10 deny 172.16.48.0 255.255.240.0</i>
B. <i class="networking-code">access-list 10 deny 172.16.0.0 0.0.255.255</i>
C. <i class="networking-code">access-list 10 deny 172.16.64.0 0.0.31.255</i>
D. <i class="networking-code">access-list 10 deny 172.16.48.0 0.0.15.255</i>
Answer» E.
70.

What router command allows you to determine whether an IP access list is enabled on a particular interface?

A. <i class="networking-code">show ip port</i>
B. <i class="networking-code">show access-lists</i>
C. <i class="networking-code">show ip interface</i>
D. <i class="networking-code">show access-lists interface</i>
Answer» D. <i class="networking-code">show access-lists interface</i>
71.

Which of the following series of commands will restrict Telnet access to the router?

A. <i class="networking-code">Lab_A(config)#access-list 10 permit 172.16.1.1<br> Lab_A(config)#line con 0<br> Lab_A(config-line)#ip access-group 10 in</i>
B. <i class="networking-code">Lab_A(config)#access-list 10 permit 172.16.1.1<br> Lab_A(config)#line vty 0 4<br> Lab_A(config-line)#access-class 10 out</i>
C. <i class="networking-code">Lab_A(config)#access-list 10 permit 172.16.1.1<br> Lab_A(config)#line vty 0 4<br> Lab_A(config-line)#access-class 10 in</i>
D. <i class="networking-code">Lab_A(config)#access-list 10 permit 172.16.1.1<br> Lab_A(config)#line vty 0 4<br> Lab_A(config-line)#ip access-group 10 in</i>
Answer» D. <i class="networking-code">Lab_A(config)#access-list 10 permit 172.16.1.1<br> Lab_A(config)#line vty 0 4<br> Lab_A(config-line)#ip access-group 10 in</i>
72.

You want to create a standard access list that denies the subnet of the following host: 172.16.144.17/21. Which of the following would you start your list with?

A. <i class="networking-code">access-list 10 deny 172.16.48.0 255.255.240.0</i>
B. <i class="networking-code">access-list 10 deny 172.16.144.0 0.0.7.255</i>
C. <i class="networking-code">access-list 10 deny 172.16.64.0 0.0.31.255</i>
D. <i class="networking-code">access-list 10 deny 172.16.136.0 0.0.15.255</i>
Answer» C. <i class="networking-code">access-list 10 deny 172.16.64.0 0.0.31.255</i>
73.

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?

A. Email and Telnet will be allowed out E0.
B. Email and Telnet will be allowed in E0.
C. Everything but email and Telnet will be allowed out E0.
D. No IP traffic will be allowed out E0.
Answer» E.
74.

When setting up Frame Relay for point-to-point subinterfaces, which of the following must not be configured?

A. The Frame Relay encapsulation on the physical interface
B. The local DLCI on each subinterface
C. An IP address on the physical interface
D. The subinterface type as point-to-point
Answer» D. The subinterface type as point-to-point
75.

Which command will display the CHAP authentication process as it occurs between two routers in the network?

A. <i class="networking-code">show chap authentication</i>
B. <i class="networking-code">show interface serial 0</i>
C. <i class="networking-code">debug ppp authentication</i>
D. <i class="networking-code">debug chap authentication</i>
Answer» D. <i class="networking-code">debug chap authentication</i>
76.

The Acme Corporation is implementing dial-up services to enable remote-office employees to connect to the local network. The company uses multiple routed protocols, needs authentication of users connecting to the network, and since some calls will be long distance, needs callback support. Which of the following protocols is the best choice for these remote services?

A. 802.1
B. Frame Relay
C. HDLC
D. PPP
E. PAP
Answer» E. PAP
77.

Which WAN encapsulations can be configured on an asynchronous serial connection?

  1. PPP
  2. ATM
  3. HDLC
  4. SDLC
  5. Frame Relay

A. 1 and 2
B. 2 and 4
C. 3, 4 and 5
D. All of the above
Answer» B. 2 and 4
78.

What is the frequency range of the IEEE 802.11a standard?

A. 2.4Gbps
B. 5Gbps
C. 2.4GHz
D. 5GHz
Answer» E.
79.

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?

A. Any available route
B. RIP route
C. Static route
D. IGRP route
E. They will all load-balance.
Answer» D. IGRP route
80.

The Corporate router receives an IP packet with a source IP address of 192.168.214.20 and a destination address of 192.168.22.3. Looking at the output from the Corporate router, what will the router do with this packet?

Corp#sh ip route
[output cut]
R 192.168.215.0 [120/2] via 192.168.20.2, 00:00:23, Serial0/0
R 192.168.115.0 [120/1] via 192.168.20.2, 00:00:23, Serial0/0
R 192.168.30.0 [120/1] via 192.168.20.2, 00:00:23, Serial0/0
C 192.168.20.0 is directly connected, Serial0/0
C 192.168.214.0 is directly connected, FastEthernet0/0

A. The packet will be discarded.
B. The packet will be routed out the S0/0 interface.
C. The router will broadcast looking for the destination.
D. The packet will be routed out the Fa0/0 interface.
Answer» B. The packet will be routed out the S0/0 interface.
81.

Which of the following is true regarding RIPv2?

A. It has a lower administrative distance than RIPv1.
B. It converges faster than RIPv1.
C. It has the same timers as RIPv1.
D. It is harder to configure than RIPv1.
Answer» D. It is harder to configure than RIPv1.
82.

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?

A. IGRP has a faster update timer.
B. IGRP has a lower administrative distance.
C. RIP has a higher metric value for that route.
D. The IGRP route has fewer hops.
Answer» C. RIP has a higher metric value for that route.
83.

What does RIPv2 use to prevent routing loops?

  1. CIDR
  2. Split horizon
  3. Authentication
  4. Classless masking
  5. Holddown timers

A. 1 and 3
B. 2, 3 and 5
C. 2 and 5
D. 3 and 4
Answer» D. 3 and 4
84.

Two connected routers are configured with RIP routing. What will be the result when a router receives a routing update that contains a higher-cost path to a network already in its routing table?

A. The updated information will be added to the existing routing table.
B. The update will be ignored and no further action will occur.
C. The updated information will replace the existing routing table entry.
D. The existing routing table entry will be deleted from the routing table and all routers will exchange routing updates to reach convergence.
Answer» C. The updated information will replace the existing routing table entry.
85.

Which two of the following are true regarding the distance-vector and link-state routing protocols?

  1. Link state sends its complete routing table out all active interfaces on periodic time intervals.
  2. Distance vector sends its complete routing table out all active interfaces on periodic time intervals.
  3. Link state sends updates containing the state of its own links to all routers in the internetwork.
  4. Distance vector sends updates containing the state of its own links to all routers in the internetwork.

A. 1 only
B. 3 only
C. 2 and 3 only
D. None of the above
Answer» D. None of the above
86.

You type debug ip rip on your router console and see that 172.16.10.0 is being advertised to you with a metric of 16. What does this mean?

A. The route is 16 hops away.
B. The route has a delay of 16 microseconds.
C. The route is inaccessible.
D. The route is queued at 16 messages a second.
Answer» D. The route is queued at 16 messages a second.
87.

Which of the following is an example of a standard IP access list?

A. <i class="networking-code">access-list 110 permit host 1.1.1.1</i>
B. <i class="networking-code">access-list 1 deny 172.16.10.1 0.0.0.0</i>
C. <i class="networking-code">access-list 1 permit 172.16.10.1 255.255.0.0</i>
D. <i class="networking-code">access-list standard 1.1.1.1</i>
Answer» C. <i class="networking-code">access-list 1 permit 172.16.10.1 255.255.0.0</i>
88.

You are working on a router that has established privilege levels that restrict access to certain functions. You discover that you are not able to execute the command show running-configuration. How can you view and confirm the access lists that have been applied to the Ethernet 0 interface on your router?

A. <i class="networking-code">show access-lists</i>
B. <i class="networking-code">show interface Ethernet 0</i>
C. <i class="networking-code">show ip access-lists</i>
D. <i class="networking-code">show ip interface Ethernet 0</i>
Answer» E.
89.

What is the maximum distance running the lowest data rate for 802.11b?

A. About 100 feet
B. About 175 feet
C. About 300 feet
D. About 350 feet
Answer» E.
90.

What is the maximum distance with maximum data rate for 802.11a?

A. About 65-75 feet
B. About 90-100 feet
C. About 150 feet
D. Over 200 feet
Answer» B. About 90-100 feet
91.

Which of the following is true regarding access lists applied to an interface?

A. You can place as many access lists as you want on any interface until you run out of memory.
B. You can apply only one access list on any interface.
C. One access list may be configured, per direction, for each layer 3 protocol configured on an interface.
D. You can apply two access lists to any interface.
Answer» D. You can apply two access lists to any interface.
92.

Which command would you use to apply an access list to a router interface?

A. <i class="networking-code">ip access-list 101 out</i>
B. <i class="networking-code">access-list ip 101 in</i>
C. <i class="networking-code">ip access-group 101 in</i>
D. <i class="networking-code">access-group ip 101 in</i>
Answer» D. <i class="networking-code">access-group ip 101 in</i>
93.

You need to create an access list that will prevent hosts in the network range of 192.168.160.0 to 192.168.191.0. Which of the following lists will you use?

A. <i class="networking-code">access-list 10 deny 192.168.160.0 255.255.224.0</i>
B. <i class="networking-code">access-list 10 deny 192.168.160.0 0.0.191.255</i>
C. <i class="networking-code">access-list 10 deny 192.168.160.0 0.0.31.255</i>
D. <i class="networking-code">access-list 10 deny 192.168.0.0 0.0.31.255</i>
Answer» D. <i class="networking-code">access-list 10 deny 192.168.0.0 0.0.31.255</i>
94.

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.

A. 1 and 2
B. 2 and 4
C. 3 and 4
D. All of the above
Answer» B. 2 and 4
95.

Which of the following commands displays the configurable parameters and statistics of all interfaces on a router?

A. <i class="networking-code">show running-config</i>
B. <i class="networking-code">show startup-config</i>
C. <i class="networking-code">show interfaces</i>
D. <i class="networking-code">show versions</i>
Answer» D. <i class="networking-code">show versions</i>
96.

You need to find the broadcast address used on a LAN on your router. What command will you type into the router from user mode to find the broadcast address?

A. <i class="networking-code">show running-config</i>
B. <i class="networking-code">show startup-config</i>
C. <i class="networking-code">show interfaces</i>
D. <i class="networking-code">show protocols</i>
Answer» D. <i class="networking-code">show protocols</i>
97.

IGRP uses which of the following as default parameters for finding the best path to a remote network?

  1. Hop count
  2. MTU
  3. Cumulative interface delay
  4. STP
  5. Path bandwidth value

A. 1 and 3
B. 3 and 5
C. 2, 3 and 5
D. All of the above
Answer» C. 2, 3 and 5
98.

Network 206.143.5.0 was assigned to the Acme Company to connect to its ISP. The administrator of Acme would like to configure one router with the commands to access the Internet. Which commands could be configured on the Gateway router to allow Internet access to the entire network?

  1. Gateway(config)# ip route 0.0.0.0 0.0.0.0 206.143.5.2
  2. Gateway(config)# router rip
  3. Gateway(config-router)# network 206.143.5.0
  4. Gateway(config-router)# network 206.143.5.0 default

A. 1 only
B. 3 only
C. 1, 2 and 4
D. 1 and 4
Answer» E.
99.

Which command will delete the contents of NVRAM on a router?

A. <i class="networking-code">delete NVRAM</i>
B. <i class="networking-code">delete startup-config</i>
C. <i class="networking-code">erase NVRAM</i>
D. <i class="networking-code">erase start</i>
Answer» E.
100.

Which command displays RIP routing updates?

A. <i class="networking-code">show ip route</i>
B. <i class="networking-code">debug ip rip</i>
C. <i class="networking-code">show protocols</i>
D. <i class="networking-code">debug ip route</i>
Answer» C. <i class="networking-code">show protocols</i>